JP2009031357A - Music piece distribution system, music piece editing device, music piece playback device, music piece storage device, and program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide technology for enabling balance control between audio signals, according to a playback condition of an audio signal and a playback mode of the audio signal. <P>SOLUTION: The following processes are individually performed on each of performance data (part signals S1 to 6) of each part, which is included in a music piece data distributed from a karaoke music piece distribution server. That is, the part signal S indicated in a channel selection section 111 is removed (minus one), a frequency characteristic is converted with an equalizer, each performance data is compressed with a compressor, and a signal level is adjusted with an amplifier 116. As a result, the music piece data in which balance of each part included in the music piece data, and balance between music pieces are adjusted for singer's desired mode can be created. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a music distribution system, a music editing device, a music playback device, a music storage device, and a program.

Conventionally, in audio distribution such as music broadcasting, a technique of distributing audio signals of a plurality of channels on the distribution side is known. In this case, in addition to a technique for distributing a stereo audio signal having two channels, a technique for distributing a multi-channel audio signal having three or more channels is also known.
The audio signal to be distributed differs in average volume and sound quality depending on the genre of music (rock, jazz, enka, etc.). In addition, even within one piece of music, the volume and sound quality of the audio signal of each channel differ due to changes in the musical instrument configuration accompanying the progress of the music. As a result, the listener may feel uncomfortable due to the unbalanced volume and quality of the audio signal between music pieces and between channels.

  Therefore, when continuously distributing music pieces of different genres, or when distributing audio signals of a plurality of channels, it is a process for balancing the volume and sound quality of audio signals between music pieces or between channels. "Mastering" was necessary.

Patent Document 1 discloses that a volume feeling can be increased even when a small-diameter speaker or the like is reproduced without unnecessarily cutting the bass or increasing the sense of distortion of the reproduced sound. An acoustic signal processing device capable of improving the above sound quality is disclosed.
JP 2007-104407 A

  As shown in the above-mentioned Patent Document 1, in the conventional mastering, the audio signal of each channel is mastered on the assumption that it is simply mixed and listened to under the “conditions assumed by the distribution side”. It was. In this case, the “condition assumed by the distribution side” means a condition that the audio signal is reproduced by a reproducing apparatus having a predetermined characteristic in a space having a predetermined acoustic characteristic.

  Accordingly, when the mastered audio signal is reproduced under “conditions assumed by the distribution side”, the listener is given an impression as intended by the distribution side. However, depending on the conditions under which the audio signal is reproduced, the listener may be given an impression different from the intention on the distribution side.

  For example, when the audio signal is played indoors or outdoors, the audio signal of each channel undergoes different acoustic characteristics changes, so when listening to the audio signals of these multiple channels together The balance of audio signal volume and sound quality may be lost between channels. Further, depending on the characteristics of the speaker that emits the audio signal (diaphragm area, amplitude, etc.), the volume and sound quality of the audio signal may be unbalanced between channels.

  In addition, when distributing multi-channel music in which multiple channels of audio signals represent different types of sounds (singing voices and performance sounds of various instruments), a specific channel is selected from the audio signals of the multiple channels included in the music. There is known a technique for realizing so-called minus one that reproduces audio signals other than the above one. If the minus one is realized, the balance may be lost between the audio signals of other channels that are not minus one. It has been desired to dynamically change the balance of audio signal volume and sound quality between channels. For example, since the part of the singing voice is missing in the interlude part, there is a demand for listening to other parts at a higher volume. However, the conventional music distribution mode cannot meet such demands.

  The present invention has been made in view of the above-described circumstances, and provides a technique that makes it possible to control the balance between audio signals in accordance with the conditions under which the audio signals are reproduced and the manner in which the audio signals are reproduced. The purpose is to do.

A music distribution system according to the present invention is a music distribution system including a music distribution server and a music receiving device, and the music distribution server receives music specifying data specifying specific music data from the music receiving device. A receiving means; a supplying means for supplying music data; and an output means for receiving and outputting the music data specified by the music specifying data received by the receiving means from the supplying means. , A transmitting means for transmitting the music designation data to the music distribution server, a receiving means for receiving the music data output from the output means, and a performance of one or more parts included in the music data received by the receiving means For each piece of data, an amplifier that amplifies each performance data at a predetermined amplification factor, and the amplification factor in the amplifier is a small amount of each performance data. Designating means for designating individually for Kutomo 1 or more, and having a reproducing device for reproducing the performance data of the each part the amplifier to adjust the level.
In the above configuration, the music receiving device stores a plurality of templates in which each piece of performance data and an amplification factor related to amplification of each piece of performance data are written in association with each other, and stores in the storage unit Selecting means for selecting one of the templates, and the designating means amplifies the amplification factor related to amplification of each performance data in the amplifier written in the template selected by the selection means It may be specified based on the rate.

The music distribution system according to the present invention is a music distribution system having a music distribution server and a music receiving device, wherein the music distribution server receives music specifying data for specifying specific music data from the music receiving device. Receiving the music; receiving means for supplying music data; and output means for receiving and outputting music data designated by the music designation data received by the receiving means from the supply means, and receiving the music The apparatus includes: a transmitting unit that transmits the music designation data to the music distribution server; a receiving unit that receives the music data output from the output unit; and one or more parts included in the music data received by the receiving unit For each piece of performance data, an equalizer that converts frequency characteristics, and a gain for each frequency in the equalizer. Designating means for designating separately for at least one or more data, the equalizer is characterized by having a reproduction means for reproducing the performance data of the each part obtained by converting the frequency characteristics.
In the above configuration, the music receiving apparatus stores a plurality of templates in which each performance data and a gain for each frequency are written in association with each other, and each of the templates stored in the storage unit. Selecting means for selecting one of the parameters, and the specifying means sets a parameter for conversion of frequency characteristics of each performance data in the equalizer to a gain for each frequency written in the template selected by the selecting means. You may specify based on.

The music distribution system according to the present invention is a music distribution system having a music distribution server and a music receiving device, wherein the music distribution server receives music specifying data for specifying specific music data from the music receiving device. Receiving the music; receiving means for supplying music data; and output means for receiving and outputting music data designated by the music designation data received by the receiving means from the supply means, and receiving the music The apparatus includes: a transmitting unit that transmits the music designation data to the music distribution server; a receiving unit that receives the music data output from the output unit; and one or more parts included in the music data received by the receiving unit For each of the performance data, a compressor that compresses each performance data according to predetermined parameters, and the compressor Designating means for designating individual aspects of compression for at least one or more of each performance data that is characterized by having a reproduction means for reproducing the performance data of the each part the compressor and compressed.
In the above configuration, the music receiving apparatus stores a plurality of templates in which each performance data and a parameter value related to compression of each performance data are written in association with each other, and stores in the storage means. Selecting means for selecting any one of the templates, and the specifying means includes a parameter value written in the template selected by the selection means for parameters related to compression of each performance data in the compressor. You may specify based on.

In the music distribution system according to the present invention, in the above configuration, the music distribution server includes one or a plurality of sound collecting units that collect sound and generate a corresponding signal, and the supply unit includes the collecting unit. You may supply the signal which the sound means produced | generated.
In the music distribution system according to the present invention, in the above configuration, the music distribution server includes storage means for storing music data including one or more parts, and the supply means reads out from the storage means. You may supply music data.
In the music distribution system according to the present invention, in the above configuration, the music distribution server includes one or a plurality of electronic musical instruments that generate a musical sound signal by a user operation, and the supply unit includes the electronic musical instrument. The generated signal may be supplied.

  A music editing apparatus according to the present invention includes: a receiving unit that receives music data; an amplifier that amplifies each piece of performance data of one or more parts included in the music data received by the receiving unit at a predetermined amplification rate; It has a designating means for individually designating an amplification factor in the amplifier for at least one of the performance data, and an output means for outputting each performance data amplified by the amplifier.

  The music editing apparatus according to the present invention includes a receiving unit that receives music data, an equalizer that converts frequency characteristics of each piece of performance data included in the music data received by the receiving unit, and the equalizer. And a designating means for individually designating a gain for each frequency for at least one of the performance data, and an output means for outputting each performance data whose frequency characteristics have been converted by the equalizer.

  The music editing apparatus according to the present invention includes a receiving unit that receives music data, a compressor that compresses each piece of performance data of one or more parts included in the music data received by the receiving unit according to a predetermined parameter, It has a designating means for individually designating at least one or more performance data of each performance data, and an output means for outputting each performance data compressed by the compressor.

  A music reproducing apparatus according to the present invention includes the music editing apparatus according to any one of the above and a reproducing means for reproducing performance data of each part output by the output means.

  A music storage device according to the present invention includes the music editing device according to any one of the above and storage means for storing performance data of each part output by the output means.

  A program according to the present invention includes a receiving unit that receives music data, an amplifier that amplifies each piece of performance data of one or more parts included in the music data received by the receiving unit at a predetermined amplification factor, and , And functioning as an specifying means for individually specifying an amplification factor in the amplifier for at least one of the performance data and an output means for outputting the performance data amplified by the amplifier.

  The program according to the present invention includes a computer that receives music data, an equalizer that converts frequency characteristics of each piece of performance data of one or more parts included in the music data received by the receiving means, The equalizer is characterized by functioning as a specifying means for individually specifying a gain for each frequency for at least one or more of each piece of performance data, and an output means for outputting each piece of performance data whose frequency characteristics have been converted by the equalizer. .

  A program according to the present invention includes a receiving unit that receives music data, a compressor that compresses each piece of performance data included in the music data received by the receiving unit according to predetermined parameters, It is characterized by functioning as a designating means for individually designating at least one or more performance data of each performance data and an output means for outputting each performance data compressed by the compressor.

  According to the music distribution system, the music editing device, the music playback device, the music storage device, and the program according to the present invention, the balance between the audio signals is adjusted in accordance with the conditions for playing back the audio signals and the playback mode of the audio signals. It becomes possible to control.

  Below, the music distribution system which concerns on one Embodiment of this invention is demonstrated. The music distribution system is a system that masters music data according to various conditions when the music is listened to and distributes the music data.

(A: Configuration)
(A-1: Overall configuration)
FIG. 1 is a diagram showing the overall configuration of the music distribution system 1. The music distribution system 1 includes receiving apparatuses 10-1, 10-2, and 10-3, a distribution apparatus 20, and a communication network 30 that connects these communication apparatuses. The receiving devices 10-1, 10-2, 10-3 are, for example, communication karaoke terminals installed in separate karaoke boxes, and the distribution device 20 distributes karaoke music data to the communication karaoke terminal. It is a server. The receiving apparatuses 10-1, 10-2, and 10-3 have the same configuration and are collectively referred to as the receiving apparatus 10 when it is not necessary to distinguish them from each other in the following description.

(A-2: Data communication)
The communication network 30 is, for example, the Internet network and mediates data communication performed according to a predetermined communication protocol between the receiving device 10 and the distribution device 20. As the communication protocol used in the present embodiment, RTP (Real-time Transport Protocol) is used as the communication protocol of the application layer, and UDP (User Datagram Protocol) is used as the communication protocol of the transport layer. IP (Internet Protocol) is used as a network layer communication protocol. The receiving devices 10-1, 10-2, 10-3, and the distribution device 20 are assigned IP addresses and are uniquely identified in the communication network 30.

  Note that RTP is a communication protocol for providing a communication service for transmitting and receiving audio data and video data in end-to-end in real time, and the details thereof are defined in RFC1889. In RTP, data is exchanged between the communication devices by generating and transmitting / receiving RTP packets.

  As shown in FIG. 2, the RTP packet is composed of a header part and a payload part, like a packet that is a data transfer unit in IP and a segment that is a data transfer unit in TCP. Three types of data including a time stamp, a transmission source identifier, and a transmission destination identifier are written in the header portion. Here, the time stamp is data indicating a time (for example, a time elapsed since the reception device 10 and the distribution device 20 started data communication). In addition, the IP address assigned to each communication device is used as the transmission source identifier and the transmission destination identifier. Audio data for a predetermined time (20 milliseconds in this embodiment) is written in the payload portion.

(A-3: Receiving device 10)
Next, the configuration of the receiving apparatus 10 will be described with reference to FIG.
A CPU (Central Processing Unit) 11 reads out a control program stored in a ROM (Read Only Memory) 12 and executes a RAM (Random Access Memory) 13 as a working area, thereby controlling each part of the receiving device 10. To do. The RAM 13 stores various parameters related to mastering executed by the CPU 11, and the CPU 11 executes various processes based on the parameter values written in the RAM 13.

  The operation unit 14 is a remote controller for inputting various requests related to music, and a keyboard and a mouse for performing various settings related to mastering of music distributed from the distribution device 20. The above remote control has a number button for selecting a song, and a song mute button for selecting whether to play the selected song with a song (normal performance) or to extract a song (karaoke accompaniment) Have The operation unit 14 outputs an operation signal representing the operated content to the CPU 11.

  The display unit 15 is a display device such as an LCD (Liquid Crystal Display), for example. Under the control of the CPU 11, a karaoke screen in which the lyrics of music are overlapped with a background image and various settings related to mastering of music data are set. Displays the operation screen to perform.

  FIG. 4 is a diagram illustrating an example of the operation screen displayed on the display unit 15. The operation screen includes a plurality of operators for adjusting various parameters related to mastering of a plurality of signals (represented by S1 to 6 in the figure) described later. FIG. 4 shows an operation screen for one signal (S1) among the plurality of signals. As shown in the figure, the operation screen has three operation units: an equalizer operation unit 15A, a compressor operation unit 15B, and an amplifier operation unit 15C.

The equalizer operation unit 15A shows parameters (gain for each frequency) when the signal to be processed is equalized by the equalizer.
The compressor operation unit 15B shows parameters (four parameters of threshold, ratio, attack time, and release time) when the signal to be processed is compressed by the compressor. The threshold is a threshold value (dB) at which compression is performed. The ratio is the ratio of compressing sounds that exceed the threshold. The attack time is the time from when the input signal exceeds the threshold until it is compressed to a ratio determined by the ratio. The release time is the time from when the input signal again falls below the threshold until compression stops.
The amplifier operation unit 15C shows parameters (amplification factor) when a signal to be processed is amplified by an amplifier.

  In the above operation unit, the slider for adjusting each parameter value can be operated by the pointer 151 operated by the mouse of the operation unit 14, and each parameter value is adjusted to the value operated by the pointer 151. Each parameter value set in the display unit 15 is written in the RAM 13.

The microphone 16 converts the collected sound into an analog signal.
The audio processing unit 17 includes an A / D converter 17A, a D / A converter 17B, and a mixer 17C. The A / D converter 17A performs A / D conversion on the analog signal generated by the microphone 16, converts it into digital data, and outputs the digital data. The D / A converter 17B D / A converts the received digital data, converts it into an analog signal, and outputs it. The mixer 17C mixes and outputs a plurality of received data.
The speaker 18 emits sound based on the analog signal received from the audio processing unit 17.

The communication unit 19 is wired to the communication network 30. The communication unit 19 sends IP packets obtained by sequentially encapsulating the RTP packets received from the CPU 11 according to the lower layer communication protocol to the communication network 30. Encapsulation means generating a UDP segment in which the RTP packet is written in the payload portion, and further generating an IP packet in which the UDP segment is written in the payload portion. In addition, the communication unit 19 receives an IP packet via the communication network 30 and performs a process reverse to the encapsulation on the IP packet, thereby converting the RTP packet encapsulated in the IP packet. Read out and output to CPU 11.
Each part of the receiving apparatus 10 described above is connected by a bus and exchanges data with each other. The above is the configuration of the receiving device 10.

(A-4: Distribution device 20)
Next, the configuration of the distribution apparatus 20 will be described with reference to FIG.
CPU21 controls each part of the delivery apparatus 20 by reading the control program memorize | stored in ROM22 and running RAM23 as a working area.

The storage unit 24 is a large-capacity storage device such as an HDD (Hard Disk Drive), and stores a plurality of music data.
FIG. 6 is a diagram schematically showing the contents of each piece of music data. Each piece of music data is roughly divided into profile data, performance data, and lyric data representing the music attributes.

  The profile data includes song number data representing the song number assigned to the song, song name data representing the song song name, genre data representing the song genre, performance time data representing the song performance time, and each part constituting the song. Constituting instrument data representing the type of sound and default value data are included.

In the genre data, for example, hard rock / heavy metal, jazz, folk, enka, classical, etc. are written.
In the constituent instrument data, the instrument name of each part of the performance data (in the case of singing, singing) is written.
In the default value data, “initial values” set by default are written for parameters relating to the equalizer, compressor, and amplifier functions of the CPU 11 of the receiving device 10. Specifically, the gain for each frequency in equalizing, the threshold, the ratio, the attack time, the release time in the compressor, and the amplification factor in the amplifier are written as the above parameters. Each piece of music data mastered based on the parameter values indicated in the default value data is set so that the performance balance of each part is optimal when played back under conditions assumed by the distribution side. ing.

The performance data is data representing the sound of each part (musical performance sound and singing sound) of the music. The performance data is data in WAVE format or MP3 (MPEG-1 Audio Layer-3) format. In the present embodiment, the performance data includes six parts: main vocal (V), chorus (C), guitar (G), bass (B), keyboard (K), and drums (D).
In the music data stored in the storage unit 24, the performance data of each part is not mastered. That is, the performance data of each part is an exemplary performance by itself, but the relative balance of volume and sound quality is not adjusted with the performance data of other parts. Therefore, even if the performance data of the plurality of parts is simply mixed, the performance becomes unnatural.

  In the lyrics data, the contents (characters) of the lyrics are associated with the timing to be displayed, the position to be displayed on the screen of the display unit 15, and the timing to perform a so-called wipe process that changes the display mode as the music progresses. It is written.

The communication unit 25 is wired to the communication network 30. The communication unit 25 sends IP packets obtained by sequentially encapsulating the RTP packets received from the CPU 21 according to the lower layer communication protocol to the communication network 30. Encapsulation means generating a UDP segment in which the RTP packet is written in the payload portion, and further generating an IP packet in which the UDP segment is written in the payload portion. In addition, the communication unit 25 receives an IP packet via the communication network 30 and performs a process opposite to the encapsulation on the IP packet, thereby converting the RTP packet encapsulated in the IP packet. Read out and output to CPU 21.
Each part of the distribution apparatus 20 described above is connected by a bus and exchanges data with each other. The above is the configuration of the distribution device 20.

(B: Operation)
Next, processing executed by the receiving device 10 and the distribution device 20 will be described. In the following operation example, when the user of the receiving apparatus 10 (hereinafter referred to as a singer) is requested to reproduce the selected music including the singing part (normal performance), the singing part is removed and reproduced. Each case where (karaoke accompaniment) is requested will be described.

(B-1; Request)
FIG. 7 is a flowchart showing a flow of processing executed by the receiving apparatus 10. FIG. 8 is a block diagram showing a data flow in the receiving apparatus 10.

The singer presses the number button of the operation unit 14 to input the tune number of the tune to be received by the receiving device 10. The singer operates a singing mute button on / off for each selected music piece to select normal performance or karaoke accompaniment.
In this operation example, two music performances are requested. The singing mute button is turned OFF (normal performance) when the first song number is input, and the singing mute button is turned ON (karaoke accompaniment) when the second song number is input.

The operation unit 14 outputs an operation signal including ON / OFF of the song mute button corresponding to the song number input to the singer and the song number to the CPU 11, and the CPU 11 receives the operation signal (step SA100).
The CPU 11 writes data indicating whether the singing mute button has been selected ON / OFF in the RAM 13 in association with the song number. Further, the CPU 11 generates a “request signal” including the selected song number and ON / OFF of the singing mute button based on the operation signal received from the operation unit 14, and outputs it to the communication unit 19. The communication unit 19 transmits a request signal to the distribution device 20 via the communication network 30.

(B-2; Editing music data)
Here, processing executed by the distribution device 20 that has received the request signal from the reception device 10 will be described. FIG. 9 is a flowchart showing a flow of processing executed by the distribution apparatus 20. FIG. 10 is a block diagram showing a data flow in the distribution apparatus 20. Hereinafter, the process will be described with reference to FIG. 10 in accordance with the flow chart of FIG.

  As shown in FIG. 10, the communication unit 25 outputs the request signal received from the receiving device 10 to the CPU 21, and the CPU 21 receives the request signal (step SB100).

  The CPU 21 specifies music data having music number data corresponding to the music number included in the received request signal. Then, the CPU 21 sets the song name data, genre data, performance time data, constituent instrument data, and default value data included in the profile data of the specified song data as “control data” to the communication unit 25 before the start of the song. Output. When receiving the control data from the CPU 21, the communication unit 25 transmits the control data to the receiving device 10 via the communication network 30 (step SB110).

When the process of step SB110 is completed, the CPU 21 reads out performance data included in the music data specified by the received request signal from the storage unit 24 as the music progresses (step SB120). The read performance data of each part, that is, the performance data of the main vocal part, the chorus part, the guitar part, the bass part, the keyboard part, and the drum spart is output to the communication unit 25. Further, the CPU 21 reads out the lyric data as the music progresses, and outputs it to the communication unit 25.
When receiving the above data, the communication unit 25 sequentially transmits the data to the receiving device 10 (step SB130).
FIG. 11 collectively shows data transmitted from the distribution device 20 to the reception device 10 as described above. The control data is data transmitted before the music performance starts, and the performance data and the lyrics data are data transmitted along with the performance of the music.

(B-3; Music performance)
Here, the process executed by the receiving apparatus 10 will be described again with reference to FIGS. 7 and 8.
First, the receiving device 10 receives control data from the distribution device 20 (step SA110). The CPU 11 writes default value data included in the control data received in step SA110 into the RAM 13, and sets initial values of parameters relating to functions of an equalizer, a compressor, and an amplifier described later (step SA120).

  As described above, the default value of the parameter described in the control data is a parameter that is optimal when the music data is reproduced under the condition assumed by the distribution side, and is the parameter for which each receiving device 10 is placed. Not optimized. The parameter value set in step SA120 is a value once set as an initial value, and can be reset as appropriate by the singer as will be described later. In the following description, a case will be described in which various parameters are set to the initial values and are not reset by the singer.

The CPU 11 receives performance data and lyric data (not shown) of each part from the distribution device 20 as the music progresses (step SA130).
The CPU 11 performs a series of acoustic processing on the received performance data as follows. The CPU 11 includes a channel selection unit 111, a normalization unit 112, an equalizer 113, a noise removal unit 114, a compressor 115, and an amplifier 116, as indicated by broken lines in FIG. Below, each acoustic process with respect to the performance data of each part input into CPU11 is demonstrated.

The channel selection unit 111 has input channels 213-1 to 213-6, and performance data of a main vocal part, a chorus part, a guitar part, a bass part, a keyboard part, and a drum spart are input to each input channel. The performance data of each part is hereinafter referred to as part signals S1 to S6. When there is no need to distinguish the part signals S1 to S6, they are collectively referred to as “part signal S”.
The input channels 213-1 to 213-6 are expressed as terminals in the drawing, but the display is expressed like a terminal for convenience in order to show a signal system.

The channel selection unit 111 reads from the RAM 13 data indicating whether the singing mute button is ON / OFF, selects the part signal S based on the data (step SA140), and normalizes the selected part signal S. Output to the unit 112. Specifically, when the singing mute button is OFF, the channel selection unit 111 outputs all received part signals S to the normalization unit 112. On the other hand, when the singing mute button is ON, the channel selection unit 111 refers to the constituent instrument data included in the control data received from the distribution device 20, and represents the singing of the main vocal from the input part signals S1 to S6. Identify the part signal. Then, the channel selection unit 111 outputs all other part signals S except the specified part to the normalization unit 112.
In the present embodiment, since the singing mute button is selected to be OFF in the first song, the part signals S1 to S6 are output to the normalizing unit 112. On the other hand, since the singing mute button is selected to be ON in the second song, the part signals S2 to 6 except the part signal S1 representing the main vocal are output to the normalizing unit 112.

  The normalizing unit 112 normalizes (standardizes) the signal level of each part signal S received from the channel selection unit 111 (step SA150). Note that normalization is a process of adjusting the volume of each part signal to the maximum level within a range where the sound is not distorted. The normalizing unit 112 outputs the normalized part signal S to the noise removing unit 114.

  The equalizer 113 converts the frequency characteristics of each part signal S received from the normalizing unit 112 (step SA160). That is, the equalizer 113 converts the frequency characteristics of each part signal S by adjusting the signal level with the gain set for each frequency band set in step SA120. Each part signal S subjected to the equalizing process is output to the noise removing unit 114.

  The noise removing unit 114 removes noise included in each part signal S received from the equalizer 113 (step SA170). For this processing, a conventionally known noise removal method such as a method of removing a signal in a specific frequency band (for example, a frequency component higher than a predetermined value) may be applied. Note that the processing by the compressor 115 described later includes a step of increasing the overall volume, and even minute noise is amplified in the step and tends to be harsh. Therefore, even if it is a minute noise, it is desirable to remove the noise before applying the compressor.

  The compressor 115 compresses the dynamic range (volume difference) of the volume of each part signal S (step SA180). This processing is performed for the purpose of making each part signal S “a powerful powerful sound”. The compressor 115 compresses each part signal S according to the four parameters, threshold, ratio, attack time, and release time, set in step SA120. Each part signal S processed by the compressor 115 is output to the amplifier 116.

  The amplifier 116 adjusts the level of each part signal S received from the compressor 115 according to the parameter value set in step SA120 (step SA190). Each part signal S whose level is adjusted is output to the audio processing unit 17.

In the audio processing unit 17, the mixer 17C mixes each part signal S received from the CPU 11, and outputs the mixed signal to the D / A converter 17B. The D / A converter 17B converts each part signal S into an analog signal and outputs it to the speaker 18.
The speaker 18 emits the signal received from the audio processing unit 17. Moreover, CPU11 displays a lyrics telop on the karaoke screen of the display part 15 based on the received lyrics data (step SA200).
When the process of step SA200 ends, the CPU 11 ends this process as soon as the performance of karaoke ends.

(B-4; Parameter reset)
In the above description, the case where the parameter value in each process of mastering is set according to the default value data included in the control data received from the distribution apparatus 20 has been described. However, the singer can appropriately reset the default values of the parameters related to the above processes before and during the performance of the music data. The singer inputs the parameter value so that the music that is most preferable under the condition where the receiving device 10 is placed is generated. When the parameter value is input, an operation signal indicating the input content is output from the operation unit 14 to the CPU 11, the parameter value written in the RAM 13 is updated, and the subsequent processing is performed according to the updated parameter value.

In this operation example, the singer resets the parameter values related to the mastering of the music data of the first song and the second song as in the following three examples. Note that these resetting methods are examples, and various other resetting methods are possible.
(Example 1) When it is desired to play the second piece of music for which karaoke accompaniment is designated as an instrumental piece, it relates to the part signal S of the part that best indicates the melody of the piece (for example, the part representing the keyboard). Adjust the amplification factor of the amplifier to be larger than the default value. By doing so, in the performance sound that is finally emitted, the performance sound of the keyboard is at a relatively high level with respect to the performance sound of the other parts, and the music is an instrument that emphasizes the melody by the keyboard. Played as a musical piece.

  (Example 2) When the singer feels that the bass sound generated by the drum spurt is annoying in the performance according to the value set by the distribution side as the default value, the parameter value related to the amplification of the part signal S6 in the amplifier 116 is smaller than the default value. May be set. As another method, the equalizer 113 may adjust parameter values related to equalization so as to reduce the level of the low frequency component of all the part signals S.

  (Example 3) When it is necessary to reproduce music at a low volume level, or when the ability to emit a low sound is low because the speaker 18 is small, the low frequency tends to be difficult to hear among the frequency components. is there. In such a case, for example, the parameter value related to the amplification of the part signal of the bass part or drum spurt is set high, or the parameter value related to equalization of the equalizer 113 is adjusted, so that the performance sound of the bass part and the frequency component of the bass May be emphasized.

  (Example 4) When the average volume level of music is greatly different between songs, for example, the genre of the first song is hard rock and the genre of the second song is jazz, each song is independent. Even if it is heard at a natural volume level if it is listened to in the situation, for a singer who listens to the music continuously, it seems that the volume is lower than the actual volume when the second music is emitted. The sound may be imbalanced between songs. In such a case, the singer sets the amplification factor of the amplifier 116 with respect to all the part signals S low in the first music piece, sets the volume level of the entire performance sound low, The amplification factor of the amplifier 116 with respect to the part signal S may be set high, and the volume level of the entire performance sound may be set high.

As described above, according to the music distribution system 1 according to the present embodiment, the singer can perform according to the conditions (sound acoustic characteristics of the space and the characteristics of the playback device) that cause the music to be emitted, and the preference of the singer. Each parameter value can be freely adjusted, and in the music composed of a plurality of parts, the balance of the entire sound of each part can be appropriately adjusted. In addition, the balance between songs can be adjusted.
Therefore, even when the conditions for releasing the music are different from the conditions assumed by the distribution side, it is possible to prevent the volume and sound quality between the parts and the music from becoming unbalanced and causing a sense of discomfort. Also, even if the conditions for releasing the music are the conditions assumed by the distribution side, each singer with a different preference should adjust the performance of each part / music to the balance that he / she feels best. Can do.

(C: Modification)
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment, It can implement with another various form. An example is shown below.

(1) In the above embodiment, the case where the music distribution system 1 is a distribution system for karaoke music has been described. That is, the distribution device 20 was a karaoke music distribution server, and the reception device 10 was a communication karaoke terminal. However, the music distribution system 1 is not limited to a karaoke music distribution system, and the present invention is applicable to a system that distributes various types of sound data.

(2) In the above embodiment, the case where three receiving apparatuses 10 are connected to the communication network 30 has been described. However, one, two, or four or more may be provided.

(3) In the above embodiment, the case where the communication network 30 is the Internet network has been described. However, a LAN (Local Area Network) or the like may be used. In short, what is necessary is just to mediate data communication performed between communication devices according to a predetermined communication protocol. Further, the case where the receiving device 10 and the distribution device 20 are connected to the communication network 30 by wire has been described. However, the communication network 30 is a wireless packet communication network such as a wireless LAN, and the reception device 10 and the distribution device 20 are It may be connected to this wireless packet communication network.

(4) In the above embodiment, the case where RTP is used as the communication protocol of the application layer related to transmission / reception of audio data has been described, but other communication protocols may be used. In short, any communication protocol for transmitting and receiving performance data in real time may be used.

(5) In the above embodiment, the distribution device 20 has been described with respect to the case where the performance data of each part included in the music data stored in the storage unit 24 is used as the part signal S. However, the means for storing music data is not limited to storage means such as an HDD. For example, the distribution device 20 may further include a reproduction device that reads and outputs data recorded on various recording media, and the data read from the recording medium by the reproduction device may be used as the part signal S.

(6) In the above embodiment, the performance data included in the music data is data in the WAVE format or MP3 format, but the data format is not limited to this. The performance data may be data in any format as long as it represents the performance of each part.

(7) In the embodiment described above, the case where performance data includes six parts has been described. However, the number of parts is not limited to six and may be any number. When the number of parts is plural, the balance between the performance data of the plural parts can be adjusted, and when the number of parts is one or plural, the balance can be adjusted between the music pieces. .

(8) In the above embodiment, the case where the default value data representing the default values of the parameter values related to various acoustic processes is stored in the storage unit 24 of the distribution device 20 and distributed to the reception device 10 has been described. . However, the default value data is not necessarily stored in the storage unit 24 in advance. When the default value data is not stored in the storage unit 24 in advance, the singer of the receiving device 10 once operates the operation unit 14 to set appropriate parameters, receives the music, and listens to it each time. It may be reset.

(9) In the above embodiment, the case where the part signal S1 of the main vocal part is removed from the music and played when the singing mute button of the operation unit 14 is turned on has been described. However, the method of removing the specific part signal S is not limited to pressing the singing mute button. For example, the specific part signal S can be excluded from the performance of the music piece by setting the amplification factor for the specific part signal S set in the amplifier 116 to zero.

(10) In the above embodiment, the case where the singing mute button of the operation unit 14 is turned ON / OFF to remove the part signal S1 of the main vocal part from the music and reproduce it has been described. However, the part signal S excluded from the music is not limited to the part signal S1, and any other part signal S may be used. For example, when a guitar is played in accordance with the release of music data, the part signal S3 of the guitar part may be removed for reproduction. In this case, a mute button (for example, “guitar mute button”) associated with the part signal to be removed may be provided in the operation unit 14 instead of or in combination with the singing mute button.

(11) In the above embodiment, the case where each part signal S is converted mainly using the three functions of the equalizer, the compressor, and the amplifier has been described. However, it is not necessary to perform all these three processes, and any one or two of them may be used. When only an equalizer is used, for example, the frequency characteristics of music pieces having particularly different frequency characteristics may be converted to make the frequency characteristics similar between the pieces of music, and a plurality of pieces of music may have a sense of unity. In addition, when only the compressor is used, the force may be generated by performing compression processing on the music without force. When only the amplifier is used, the amplification factor of the amplifier for each part may be adjusted as shown in (Example 1) in the above-described embodiment to balance between the parts and between the music pieces.

(12) In the above embodiment, the case has been described where the functions characteristic of the receiving device 10 and the distribution device 20 are realized by software modules. However, the music distribution according to the present invention by combining the hardware modules responsible for the above functions. Each device of the system 1 may be configured.

(13) In the above embodiment, a case has been described in which the programs for realizing the functions characteristic of the receiving device 10 and the distributing device 20 according to the present invention are written in advance in the ROM 12 and the ROM 22, respectively. The above program may be recorded and distributed on a computer-readable recording medium such as a magnetic disk, flexible disk, optical recording medium, magneto-optical recording medium, RAM, ROM, etc., and downloaded via an electric communication line such as the Internet network. You may make it distribute the said program by.

(14) In the above embodiment, the case where the receiving apparatus 10 “sounds” the part signal S whose balance between the part signals is adjusted has been described. However, means for storing the part signal S in which the balance between the part signals is adjusted in the receiver 10 (computer reading such as magnetic tape, magnetic disk, flexible disk, optical recording medium, magneto-optical recording medium, RAM, ROM, etc.) Writing means for writing the audio data on a possible recording medium, and a large-capacity storage device such as an HDD for storing the audio data), and storing the music data whose balance is adjusted in a manner desired by the singer You may memorize. That is, in FIG. 8, the output signal output from the mixer 17C may be stored in the storage means. Thus, if the music distribution system 1 according to the present invention is modified and used, it is possible to realize a music data generation apparatus that generates music data in which the balance of performance data of each part is adjusted in a desired manner of the singer. is there.

(15) In the above embodiment, as shown in FIG. 4, the case where the equalizing mode by the equalizer 113 is set by the gain for each frequency has been described. In this case, it is possible to set the equalizing mode more easily by selecting the “pattern” of equalizing. For example, a gain for each frequency band is set and stored in advance for each of a plurality of modes, such as a mode for emphasizing bass, a mode for emphasizing treble, a mode for emphasizing bass and treble, and a mode for reducing bass and treble. In addition, at the time of equalizing, the gain for each frequency band corresponding to the mode selected by the singer may be read and set in the equalizer 113.

(16) In the above embodiment, as illustrated in FIG. 4, the case has been described in which the compression mode by the compressor 115 is set by four parameters of threshold, ratio, attack, and release. However, one or more parameters of the plurality of parameters may be settable such that only the threshold and the ratio can be set so that the setting can be made more easily.

(17) In the above embodiment, initial values are set based on default value data for parameters related to each acoustic process executed by the CPU 11 of the receiving device 10, and the initial values can be reset by the singer. The case where However, a plurality of templates in which setting values for all or a plurality of these parameters are written are stored in the ROM 12 or the RAM 13 of the receiving apparatus 10 in advance, and an operation for selecting one of the templates is performed on the operation unit 14. When a child is provided and one of the templates is selected by the singer, the values described in the selected template may be set for each parameter. In this case, the initial value of each parameter may be set based on the template instead of the control data, and the initial value set based on the control data is updated to the value described in the template. May be. The value set based on the template may be further updated based on the operation of the operation unit 14.

Further, the value of each parameter may be automatically set based on the characteristics of the acoustic space where the receiving device 10 is placed. The characteristics of the acoustic space include, for example, the length of reverberation time, the expansion of the acoustic space (space volume), and the like.
First, the case where the value of each parameter is set based on the length of reverberation time will be described. The receiving device 10 is provided with a microphone that generates a sound signal representing the collected sound, and sound data such as an impulse sound is stored in the ROM 12 or RAM 13. When setting the values of the parameters, the impulse sound is emitted to the speaker 18 and collected by the microphone. Then, the level of the sound signal generated by the microphone is measured over time, and the time (reverberation time) required for the level to fall below a predetermined threshold is measured. The ROM 12 or the RAM 13 further stores a table in which the setting values of each parameter are written corresponding to the reverberation time, and the parameter setting values corresponding to the measured reverberation time are stored in the table. You may make it set to each parameter.
In the above configuration, the sound data is sound data representing a sound of a predetermined frequency (for example, an ultrasonic wave), and the time required for the reflected sound to be detected by the microphone after the sound data is emitted (reflection) It is also possible to estimate the extent (volume) of the acoustic space by measuring (time) and set the values of the respective parameters according to the extent of the acoustic space. In that case, the ROM 12 or the RAM 13 stores a table in which the setting values of the respective parameters are written corresponding to the reflection time, and the parameter setting values corresponding to the measured reflection time in the table. May be set for each parameter.

  Further, the value of each parameter may be automatically set based on the characteristics of the music reproduced by the receiving device 10. The characteristics of the music include the music genre and tempo. In that case, the data indicating the characteristics of the music may be included in the control data, and the receiving apparatus 10 may determine the characteristics of the music from the control data. You may judge the characteristic of a music by analyzing performance data. The receiving apparatus 10 stores a table that associates the characteristics of the music with each parameter in the ROM 12 or the RAM 13 or stores a control program having an algorithm for calculating the value of each parameter from the characteristics of the music in the ROM 12. The value of each parameter may be calculated and set from the characteristics of the music and the table or program.

(18) In the above embodiment, the distribution device 20 has been described with respect to the case where the music data stored in the storage unit 24 is read and distributed. However, the distribution apparatus 20 may be provided with a plurality of microphones, each of the microphones may collect the sound of each part, and the collected sound may be used instead of each part of the performance data. If it does so, the music distribution system which distributes a live performance to the singer who uses the receiving apparatus 10 is realizable.
In such a case, instead of the method of generating audio data of a plurality of parts using a microphone, the distribution device 20 includes a plurality of input systems, and various electronic musical instruments are connected to the plurality of input systems. May receive a plurality of audio data inputs.

1 is a block diagram illustrating a configuration of a music distribution system 1. FIG. It is a figure which shows the structure of a RTP packet. 2 is a block diagram showing a configuration of a receiving device 10. FIG. FIG. 6 is a diagram showing an example of display contents on the display unit 15. 3 is a block diagram illustrating a configuration of a distribution device 20. FIG. It is the figure which showed the structure of music data. FIG. 7 is a diagram illustrating a processing flow of the reception device 10. 4 is a diagram illustrating a data flow in the receiving device 10. FIG. 3 is a flowchart showing a flow of processing of a distribution device 20. 3 is a diagram illustrating a data flow in a distribution device 20. FIG. It is the figure which showed the data which the delivery apparatus 20 delivers.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Music distribution system 10, 10-1, 10-2, 10-3 ... Receiving device, 11 ... CPU, 12 ... ROM, 13 ... RAM, 14 ... Operation part, 15 ... Display part, 16 ... Microphone, 17 ... voice processing unit, 17A ... A / D converter, 17B ... D / A converter, 17C ... mixer, 18 ... speaker, 19 ... communication unit, 20 ... distribution device, 21 ... CPU, 22 ... ROM, 23 ... RAM, 24 DESCRIPTION OF SYMBOLS ... Memory | storage part, 25 ... Communication part, 30 ... Communication network, 111 ... Channel selection part, 112 ... Normalize part, 113 ... Equalizer, 114 ... Noise removal part, 115 ... Compressor, 116 ... Amplifier

Claims (17)

In a music distribution system having a music distribution server and a music receiver,
The music distribution server is
Receiving means for receiving music designation data for designating specific music data from the music receiving device;
Supply means for supplying music data;
Output means for receiving and outputting the music data designated by the music designation data received by the receiving means from the supply means;
The music receiving device is:
Transmitting means for transmitting the music designation data to the music distribution server;
Receiving means for receiving the music data output from the output means;
An amplifier that amplifies each piece of performance data at a predetermined amplification rate for each piece of performance data of one or more parts included in the music data received by the receiving means;
Designating means for individually designating the amplification factor in the amplifier for at least one or more of each piece of performance data;
Reproduction means for reproducing performance data of each part whose level is adjusted by the amplifier. In a music distribution system having a music distribution server and a music receiver,
The music distribution server is
Receiving means for receiving music designation data for designating specific music data from the music receiving device;
Supply means for supplying music data;
Output means for receiving and outputting the music data designated by the music designation data received by the receiving means from the supply means;
The music receiving device is:
Transmitting means for transmitting the music designation data to the music distribution server;
Receiving means for receiving the music data output from the output means;
An equalizer for converting frequency characteristics for each piece of performance data of one or more parts included in the music data received by the receiving means;
In the equalizer, designation means for individually designating gain for each frequency for at least one or more of each performance data;
A music distribution system comprising: reproducing means for reproducing the performance data of each of the parts whose frequency characteristics are converted by the equalizer. In a music distribution system having a music distribution server and a music receiver,
The music distribution server is
Receiving means for receiving music designation data for designating specific music data from the music receiving device;
Supply means for supplying music data;
Output means for receiving and outputting the music data designated by the music designation data received by the receiving means from the supply means;
The music receiving device is:
Transmitting means for transmitting the music designation data to the music distribution server;
Receiving means for receiving the music data output from the output means;
A compressor that compresses each piece of performance data according to a predetermined parameter for each piece of performance data of one or more parts included in the music data received by the receiving means;
Designating means for individually designating the compression mode in the compressor for at least one of each piece of performance data;
Reproducing means for reproducing the performance data of each part compressed by the compressor. The music receiving device is:
Storage means for storing a plurality of templates in which the performance data and amplification factors related to amplification of the performance data are written in association with each other;
Selecting means for selecting any of the templates stored in the storage means;
The musical composition according to claim 1, wherein the designating unit designates an amplification factor related to amplification of each performance data in the amplifier based on an amplification factor written in a template selected by the selection unit. Distribution system. The music receiving device is:
Storage means for storing a plurality of templates written in association with each performance data and gain for each frequency;
Selecting means for selecting any of the templates stored in the storage means;
The specification unit specifies a parameter related to the conversion of frequency characteristics of each performance data in the equalizer based on a gain for each frequency written in the template selected by the selection unit. The music distribution system described in 1. The music receiving device is:
Storage means for storing a plurality of templates in which each performance data and parameter values related to compression of each performance data are written in association with each other;
Selecting means for selecting any of the templates stored in the storage means;
4. The music distribution according to claim 3, wherein the specifying unit specifies a parameter related to compression of each performance data in the compressor based on a parameter value written in a template selected by the selection unit. system. The music distribution server has one or a plurality of sound collecting means for collecting sound and generating a corresponding signal,
The music distribution system according to any one of claims 1 to 3, wherein the supply unit supplies a signal generated by the sound collection unit. The music distribution server has storage means for storing music data including one or more parts,
The music distribution system according to any one of claims 1 to 3, wherein the supply means supplies music data read from the storage means. The music distribution server has one or a plurality of electronic musical instruments that generate a musical sound signal by a user operation,
The music distribution system according to any one of claims 1 to 3, wherein the supply unit supplies a signal generated by the electronic musical instrument. A receiving means for receiving music data;
An amplifier that amplifies the performance data of one or more parts included in the music data received by the receiving means at a predetermined amplification rate;
Designating means for individually designating the amplification factor in the amplifier for at least one or more of each piece of performance data;
And an output means for outputting each piece of performance data amplified by the amplifier. A receiving means for receiving music data;
An equalizer for converting frequency characteristics for each piece of performance data of one or more parts included in the music data received by the receiving means;
In the equalizer, designation means for individually designating the gain for each frequency for at least one or more of each performance data;
An output means for outputting each piece of performance data whose frequency characteristics have been converted by the equalizer. A receiving means for receiving music data;
A compressor that compresses each piece of performance data of one or more parts included in the music data received by the receiving means according to a predetermined parameter;
Designating means for individually designating the compression mode in the compressor for at least one of each piece of performance data;
And an output means for outputting each piece of performance data compressed by the compressor. A music editing device according to any one of claims 10 to 12,
Reproduction means for reproducing performance data of each part output by the output means. A music editing device according to any one of claims 10 to 12,
Storage means for storing performance data of each part output by the output means. Computer
A receiving means for receiving music data;
An amplifier that amplifies the performance data of one or more parts included in the music data received by the receiving means at a predetermined amplification rate;
Designating means for individually designating the amplification factor in the amplifier for at least one or more of each piece of performance data;
A program for functioning as output means for outputting performance data amplified by the amplifier. Computer
A receiving means for receiving music data;
An equalizer for converting frequency characteristics for each piece of performance data of one or more parts included in the music data received by the receiving means;
In the equalizer, designation means for individually designating the gain for each frequency for at least one or more of each performance data;
A program for functioning as output means for outputting performance data whose frequency characteristics have been converted by the equalizer. Computer
A receiving means for receiving music data;
A compressor that compresses each piece of performance data of one or more parts included in the music data received by the receiving means according to a predetermined parameter;
Designating means for individually designating the compression mode in the compressor for at least one of each piece of performance data;
A program for functioning as output means for outputting performance data compressed by the compressor.

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