JP2004039166A - Recording device and electronic musical instrument - Google Patents

Abstract

An object of the present invention is to effectively utilize a recording area of a storage unit (CD-R / RW or the like) by canceling data recording without requiring a large-capacity memory (a hard disk or the like).
A buffer for buffering data, a storage unit for recording data via the buffer, a recording instruction unit for instructing data recording, and a recording instruction unit for instructing data recording cancellation. A recording device having a cancel instruction means is provided. In the period from when the recording instruction is issued to when the first predetermined amount of data is buffered in the buffer, if the cancel instruction is issued, the buffered data is not recorded in the storage means. Record in storage means.
[Selection diagram] Fig. 4

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a recording device and an electronic musical instrument, and more particularly to a recording device and an electronic musical instrument for recording data.
[0002]
[Prior art]
By using a personal computer or the like, audio data can be recorded on a CD-R / RW (storage means). At this time, the audio data is temporarily recorded on a large-capacity hard disk (large-capacity memory), and then the audio data is recorded from the hard disk to a CD-R / RW. In this case, a large-capacity hard disk is required, which increases the cost.
[0003]
[Problems to be solved by the invention]
In electronic musical instruments, there is a demand for recording audio data played in real time on a CD-R / RW. However, if a hard disk is mounted on an electronic musical instrument, it becomes expensive. Also, even if the performance fails, it is impossible or difficult to delete the audio data recorded in real time from the CD-R / RW.
[0004]
An object of the present invention is to provide a recording apparatus which does not require a large-capacity memory (such as a hard disk) and cancels data recording so that a recording area of a storage unit (such as a CD-R / RW) can be effectively used. To provide electronic musical instruments.
[0005]
[Means for Solving the Problems]
According to one aspect of the present invention, a buffer for buffering data, storage means for recording data via the buffer, recording instruction means for instructing data recording, and data recording Cancel instructing means for instructing canceling, and when a cancel instruction is issued by the cancel instructing means from when the recording instruction is issued by the recording instructing means to when the first predetermined amount of data is buffered in the buffer. There is provided a recording apparatus comprising: a recording control unit that does not record the buffered data in the storage unit and records the buffered data in the storage unit unless a cancel instruction is issued by the cancel instruction unit.
[0006]
According to another aspect of the present invention, a keyboard for a player to perform a performance operation, a buffer for buffering data, storage means for recording data via the buffer, and recording of data. Recording instructing means for instructing, cancel instructing means for instructing to cancel data recording, and a period from when the recording is instructed by the recording instructing means until the first predetermined amount of data is buffered in the buffer. A recording control unit that does not record the buffered data in the storage unit when the cancel instruction is issued by the cancel instruction unit, and records the buffered data in the storage unit unless the cancel instruction is issued by the cancel instruction unit. Electronic musical instrument comprising:
[0007]
Data recording can be canceled during the period from when data recording is instructed to when the first predetermined amount of data is buffered in the buffer. For example, when recording in real time, if the recording fails, the recording can be canceled, and the recording area of the storage means (CD-R / RW or the like) can be effectively used without wasting. Also, a small-capacity buffer for buffering a predetermined amount of data may be prepared, and a large-capacity memory such as a hard disk is not required, so that the cost can be reduced.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a block diagram showing a hardware configuration of the electronic musical instrument according to the embodiment of the present invention. To the bus 101, a CPU 103, a ROM 105, a RAM 106, an external storage device 107, a keyboard 119, a sound source 108, a DSP (Digital Signal Processor) 110, a serial-parallel converter (SPC) 113, and a parallel-serial converter (PSC) 114 are connected. You. An external interface 102, an operation panel and a display unit 104 are connected to the CPU 103. A waveform ROM 109 is connected to the sound source 108.
[0009]
The keyboard 119 has a plurality of white keys and black keys. The CPU 103 inputs a note-on event or a note-off event according to a key press operation or a key release operation on the keyboard 119. The external interface 102 is, for example, a MIDI (musical instrument digital interface) interface, and inputs and outputs MIDI data to and from an external device (for example, an electronic musical instrument). The CPU 103 can input MIDI data including a note-on event or the like via the external interface 102.
[0010]
The waveform ROM 109 stores a plurality of tone waveforms (tone data). The sound source 108 receives a tone parameter from the CPU 103, reads a tone waveform from the waveform ROM 109, generates a tone signal S11, and outputs the tone signal S11 to the DSP 110. The above tone parameters are note-on events and note-off events of the keyboard 119 and / or the external interface 102, operation information of the operation panel 104, and the like.
[0011]
The external input terminal 111 is a microphone input terminal or a line-in terminal, and inputs analog audio data (including audio data). The external input terminal 111 can input audio data from a microphone or another electronic musical instrument. An analog-to-digital converter (ADC) 112 converts audio data input via the external input terminal 111 from an analog format to a digital format, and outputs audio data S12 to the DSP 110.
[0012]
The external storage device 107 is, for example, a CD-R or a CD-RW, and can record audio data. A CD-R is a recording medium on which data cannot be rewritten after the data has been recorded once, and the data once recorded cannot be erased. The CD-RW is a recording medium on which data can be rewritten. When data is erased, all data from the erase start position to the end is erased. That is, any partial erasure cannot be performed. The user can perform real-time recording on the external storage device 107. For example, audio data played on the keyboard 119 is recorded, audio data input via the external input terminal 111 is recorded, and audio data corresponding to MIDI data input via the external interface 102 is recorded. can do. For example, the audio data is recorded in the external storage device 107 in a CD-DA (digital audio) format.
[0013]
FIG. 2 shows the operation panel and the display 104. When the recording selection switch 227 is pressed, a recording source selection screen is displayed on the liquid crystal display (LCD) 231 to indicate that "performance", "microphone", and "performance and microphone" can be selected. The switch 201 is a switch for selecting “play”, and can record audio data corresponding to a keyboard operation of the keyboard 119 and an input of the external interface 102. When the user presses the switch 201, the CPU 103 of FIG. 1 outputs control signals S1 = 1 and S2 = 0 to the DSP 110. The switch 202 is a switch for selecting “microphone”, and can record audio data input through the external input terminal 111. When the user presses the switch 202, the CPU 103 of FIG. 1 outputs control signals S 1 = 0 and S 2 = 1 to the DSP 110. The switch 203 is a switch for selecting "performance and microphone", and can record audio data obtained by adding both the audio data of "performance" and the audio data of "microphone". When the user presses the switch 203, the CPU 103 of FIG. 1 outputs control signals S1 = 1 and S2 = 1 to the DSP 110.
[0014]
The recording switch 222 is a switch for instructing the external storage device 107 to start recording. The recording light emitting diode (LED) 212 lights up during recording. The stop switch 224 is a switch for stopping recording. The reproduction switch 223 is a switch for reproducing audio data recorded in the external storage device 107. The reproduction LED 213 lights up during reproduction. By performing recording a plurality of times, audio data of a plurality of music pieces is recorded. The music selection minus switch 225 is a switch for selecting audio data one music before. The music selection plus switch 226 is a switch for selecting audio data after one music. The cancel switch 221 is a switch for canceling the recording instructed to start, and can be canceled during the first predetermined period. The cancel LED 211 blinks during a cancelable period. The user can cancel only when the cancel LED 211 is blinking. Hereinafter, a recording method when the recording switch 222 is pressed will be described.
[0015]
1, the DSP 110 has multipliers 121 and 122 and adders 123 and 124. The multiplier 121 multiplies the audio data S11 by the control signal S1, and outputs audio data S13. The multiplier 122 multiplies the audio data S12 by the control signal S2 and outputs audio data S14. The adder 123 adds the audio data S13 and the audio data S14 and outputs audio data S15. The audio data S15 is data to be recorded. When the "performance" switch 201 in FIG. 2 is pressed, the audio data S11 becomes the audio data S15. When the “microphone” switch 202 in FIG. 2 is pressed, the audio data S12 becomes the audio data S15. When the "performance and microphone" switch 203 in FIG. 2 is pressed, the added value of the audio data S11 and S12 becomes the audio data S15. The SPC 113 converts the audio data S15 from a serial format to a parallel format. The CPU 103 records the parallel audio data in the external storage device 107 via a buffer in the RAM 106.
[0016]
Next, a reproduction method when the reproduction switch 223 in FIG. 2 is pressed will be described. The CPU 103 reads the audio data in the parallel format from the external storage device 107 and outputs the data to the PSC 114 via the buffer in the RAM 106. The PSC 114 converts the audio data from a parallel format to a serial format, and outputs audio data S17.
[0017]
Next, the sound generation processing of the electronic musical instrument will be described. The adder 124 adds the audio data S11 and the audio data S12, and outputs audio data S16. The adder 115 adds the audio data S16 and the audio data S17, and outputs the audio data S18 to a digital-analog converter (DAC) 116. The DAC 116 converts the audio data from a digital format to an analog format, and outputs the audio data to the amplifier 117. Amplifier 117 amplifies the audio data and outputs it to speaker 118. A tone is produced from the speaker 118.
[0018]
The ROM 105 stores a computer program. The CPU 103 performs the above processing according to a computer program in the ROM 105. Specifically, the processing shown in FIGS. The RAM 106 has a work area of the CPU 103 such as a buffer, a flag, and a register. The CPU 103 can perform an interrupt process of FIG. 7 described later according to a signal of the DSP 110.
[0019]
FIG. 3 shows a method of recording audio data in the external storage device 107 via the buffer in the RAM 106 of FIG. At time t1, when the recording switch 222 of FIG. 2 is pressed, the input audio data is sequentially buffered in a buffer in the RAM. Next, after time t3 after a lapse of a predetermined time, the audio data in the buffer is sequentially recorded in the external storage device 107. After time t3, the input audio data is sequentially buffered in the buffer. The buffer is of a FIFO (first in first out) method, and data is stored after the last address of the buffer so as to follow the first address. That is, the buffer only needs to have a capacity enough to store at least the data amount of the data from time t1 to time t3. The cancel LED 211 in FIG. 2 blinks from time t1 to time t3 (for example, 30 to 60 seconds), indicating that cancellation is possible, and turns off after time t3, indicating that cancellation is not possible. Show. When the stop switch 224 in FIG. 2 is pressed, all the audio data remaining in the buffer is written to the external storage device 107, and the recording process ends.
[0020]
FIG. 4A is a diagram showing processing when the cancel switch 221 in FIG. 2 is pressed. At time t1, when the recording switch 222 is pressed, the input audio data is sequentially buffered in a buffer in the RAM 106. Cancellation is possible from time t1 to t3. At time t2, when the cancel switch 221 is pressed, the buffering of the input audio data ends, and the audio data 401 in the buffer is canceled. As a result, even at time t3, the audio data 401 is not recorded in the external storage device 107. The user can cancel the recording in the external storage device 107 by pressing the cancel switch between the times t1 and t3.
[0021]
FIG. 4B is a diagram showing processing when the stop switch 224 of FIG. 2 is pressed. At time t1, when the recording switch 222 is pressed, the input audio data is sequentially buffered in a buffer in the RAM 106. Next, at time t2, when the stop switch 224 is pressed, the buffering of the input audio data is terminated, and the recording is stopped. Thereafter, at time t3, the audio data 401 in the buffer is recorded in the external storage device 107. The user can record the audio data 401 in the external storage device 107 from when the recording switch 222 is pressed until when the stop switch 224 is pressed.
[0022]
As described above, between the time when the data recording is instructed by pressing the recording switch 222 and the time when the first predetermined amount of data is buffered in the buffer, the buffering is performed when the canceling instruction is pressed by pressing the cancel switch 221. The buffered data is not recorded in the external storage device 107, and the buffered data is recorded in the external storage device 107 unless a cancel instruction is given by the cancel switch 221. Specifically, the buffered data between when the recording switch 222 is pressed and when the stop switch 224 is pressed is recorded in the external storage device 107. The cancel LED 211 blinks to indicate that data recording can be canceled from when the recording switch 222 is pressed until the first predetermined amount of data is buffered in the buffer.
[0023]
FIG. 5 is a flowchart showing the processing of the main routine performed by the electronic musical instrument. When the power of the electronic musical instrument is turned on, the following processing is performed. In step S501, initial settings such as a buffer and a flag are performed. Next, in step S502, a process corresponding to an operation of a switch (operator) on the operation panel 104 (FIG. 1) is performed. Details of this processing will be described later with reference to FIGS. Next, in step S503, keyboard processing is performed. The keyboard processing detects key information including key depression information (key-on event) and key release information (key-off event) according to the operation of the keyboard 119, and performs sound generation or mute processing. Next, in step S504, other processing such as display processing of the display device 104 and input / output processing of the external interface 102 is performed. Thereafter, the flow returns to step S502, and the above processing is repeated.
[0024]
FIG. 6 is a flowchart showing processing when the recording switch 222 is pressed and a recording switch event occurs. In step S601, it is checked whether recording or playback is in progress. If recording or reproduction is in progress, the process is terminated; otherwise, the process proceeds to step S602. In step S602, a recording flag indicating that recording is in progress is set. Next, in step S603, the cancel LED 211 blinks to notify the user of the cancelable period. Next, in step S604, the recording LED 212 is turned on to notify the user that recording is in progress. Next, in step S605, the address of the buffer in the RAM 106 is initialized. After that, the process ends.
[0025]
FIG. 7 is a flowchart showing the interrupt processing of the electronic musical instrument. This process is an interrupt process that is periodically performed by a signal from the DSP 110. In step S701, the recording flag is checked to determine whether recording is in progress. If it is during recording, the process proceeds to step S702, and if not, the process ends. In step S702, the input audio data is fetched and written to the current buffer address (position). Next, in step S703, it is checked whether the amount of audio data in the buffer is a predetermined amount. If it is the predetermined amount, the process proceeds to step S704, and if not, the process proceeds to step S706. In step S704, the cancel LED 211 is turned off to notify the user that cancellation is not possible. Next, in step S705, an instruction to start writing the audio data in the buffer to the external storage device 107 is issued. Next, in step S706, the address (position) of the buffer is advanced to the next. After that, the process ends.
[0026]
FIG. 8 is a flowchart showing processing when the cancel switch 221 is pressed and a cancel switch event occurs. In step S801, it is checked whether the cancel LED 211 is blinking. If it is blinking, the process proceeds to step S802, and if it is off, the process is terminated because it cannot be canceled. In step S802, the recording flag is cleared and recording is stopped. Next, in step S803, the cancel LED 211 is turned off. Next, in step S804, the recording LED 222 is turned off. After that, the process ends.
[0027]
FIG. 9 is a flowchart illustrating a process when the stop switch 224 is pressed and a stop switch event occurs. In step S901, the recording flag is checked to determine whether or not recording is in progress. If it is during recording, the process proceeds to step S902, and if not, the process ends. In step S902, the recording flag is cleared, and the recording is stopped. In step S903, the audio data in the buffer is written to the external storage device 107, and the process waits until all data has been written. Next, in step S904, the cancel LED 211 is turned off. Next, in step S905, the recording LED 212 is turned off. After that, the process ends.
[0028]
As described above, between the time when the data recording is instructed by pressing the recording switch 222 and the time when the first predetermined amount of data is buffered in the buffer, the buffering is performed when the canceling instruction is pressed by pressing the cancel switch 221. The recorded data is not recorded in the external storage device 107. On the other hand, if no cancel instruction is given by the cancel switch 221 during the above, the buffered data between the time when the recording switch 222 is pressed and the time when the stop switch 224 is pressed is recorded in the external storage device 107.
[0029]
For example, when performing real-time recording of a keyboard performance, if the performance fails, the user may want to cancel the recording. In particular, if the music fails immediately after the start of the performance, the user often wants to start recording again. If the input audio data is immediately recorded on an external storage device (such as a CD-R), the recorded data cannot be deleted or is difficult. According to the present embodiment, data recording can be canceled from when the data recording is instructed until the first predetermined amount of data is buffered in the buffer. As a result, at the time of real-time recording, even if the recording fails, the recording can be canceled, and the recording area of the external storage device (CD-R or the like) can be effectively used without wasting. Also, a small-capacity buffer for buffering a predetermined amount of data may be prepared, and a large-capacity memory such as a hard disk is not required, so that the cost can be reduced.
[0030]
Note that the external storage device 107 is not limited to a CD-R / RW, but can be applied to other optical disks such as a DVD and an MO. Optical discs include CD-R / RW, DVD (including DVD-R, etc.), MO, etc., which have the same properties and have limitations on data erasure. Further, the external storage device 107 can be applied to a device such as a CD-R / RW in which data is sequentially recorded from a recording start position by sequential access. In particular, the external storage device 107 has a great effect when the data cannot be rewritten after the data is recorded once, such as a CD-R.
[0031]
Although the case of the electronic musical instrument has been described above as an example, the present invention is not limited to the electronic musical instrument. For example, the present invention can be applied to a karaoke apparatus. That is, the automatic performance data and / or the singing voice of the microphone-input singer can be recorded in the external storage device 107. Also, the case where audio data is recorded has been described as an example, but data other than audio data may be recorded. For example, MIDI data or image data may be recorded.
[0032]
It should be noted that each of the above-described embodiments is merely an example of a concrete example in carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. That is, the present invention can be implemented in various forms without departing from the technical idea or the main features.
[0033]
【The invention's effect】
As described above, the data recording can be canceled from when the data recording is instructed until the first predetermined amount of data is buffered in the buffer. For example, when recording in real time, if the recording fails, the recording can be canceled, and the recording area of the storage means (CD-R / RW or the like) can be effectively used without wasting. Also, a small-capacity buffer for buffering a predetermined amount of data may be prepared, and a large-capacity memory such as a hard disk is not required, so that the cost can be reduced.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a hardware configuration of an electronic musical instrument according to an embodiment of the present invention.
FIG. 2 is a diagram showing an operation panel and a display.
FIG. 3 is a diagram illustrating a method of recording audio data in an external storage device via a buffer.
FIG. 4A is a diagram illustrating a process when a cancel switch is pressed, and FIG. 4B is a diagram illustrating a process when a stop switch is pressed.
FIG. 5 is a flowchart illustrating a process of a main routine performed by the electronic musical instrument.
FIG. 6 is a flowchart illustrating processing when a recording switch is pressed and a recording switch event occurs.
FIG. 7 is a flowchart showing interrupt processing of the electronic musical instrument.
FIG. 8 is a flowchart illustrating processing when a cancel switch is pressed and a cancel switch event occurs.
FIG. 9 is a flowchart illustrating processing when a stop switch is pressed and a stop switch event occurs.
[Explanation of symbols]
101 Bus 102 External interface 103 CPU
104 operation panel and display 105 ROM
106 RAM
107 External storage device 108 Sound source 109 Waveform ROM
110 DSP
111 External input terminal 112 Analog-digital converter 113 Serial-parallel converter 114 Parallel-serial converter 115 Adder 116 Digital-analog converter 117 Amplifier 118 Speaker 119 Keyboard 121, 122 Multiplier 123, 124 Adder 201 "Play" selection switch 202 "Microphone" selection switch 203 "Performance and microphone" selection switch 211 Cancel LED
212 Recording LED
213 Playback LED
221 Cancel switch 222 Record switch 223 Play switch 224 Stop switch 225 Music selection minus switch 226 Music selection plus switch 227 Recording selection switch 231 LCD display

Claims (22)

A buffer for buffering data,
Storage means for recording data via the buffer,
Recording instruction means for instructing data recording;
Cancel instruction means for instructing to cancel data recording;
When a cancel instruction is given by the cancel instruction means between the time when the recording instruction is given by the recording instruction means and the time when the first predetermined amount of data is buffered in the buffer, the buffered data is recorded in the storage means. A recording control unit that records the buffered data in the storage unit if the cancel instruction is not issued by the cancel instruction unit. 2. The display device according to claim 1, further comprising a display unit for displaying that data recording can be canceled from when the recording instruction is issued by the recording instruction unit to when the first predetermined amount of data is buffered in the buffer. Recording device. Furthermore, it has a stop instruction means for instructing to stop recording data,
2. The recording apparatus according to claim 1, wherein the recording control means records the buffered data in the storage means from when the recording instruction is issued by the recording instruction means to when the stop instruction is issued. 2. The recording device according to claim 1, wherein the data is audio data. 2. The recording apparatus according to claim 1, wherein said storage means is an optical disk. 2. The recording apparatus according to claim 1, wherein the storage unit cannot rewrite the data once the data has been recorded. 2. The recording apparatus according to claim 1, wherein said storage means is a CD-R or a CD-RW. 2. The recording apparatus according to claim 1, wherein said storage means is a CD-R. 2. The recording apparatus according to claim 1, wherein the storage unit records data sequentially from a recording start position by sequential access. A keyboard for performing by the performer,
A buffer for buffering data,
Storage means for recording data via the buffer,
Recording instruction means for instructing data recording;
Cancel instruction means for instructing to cancel data recording;
When a cancel instruction is given by the cancel instruction means between the time when the recording instruction is given by the recording instruction means and the time when the first predetermined amount of data is buffered in the buffer, the buffered data is recorded in the storage means. An electronic musical instrument having recording control means for recording the buffered data in the storage means unless the cancel instruction is given by the cancel instruction means. The electronic musical instrument according to claim 10, wherein the recording control unit records data corresponding to the operation of the keyboard in the storage unit. A sound source that generates audio data in accordance with the operation of the keyboard;
The electronic musical instrument according to claim 10, wherein the recording control unit records the audio data in the storage unit. Furthermore, an external input terminal for inputting audio data from outside,
Selecting means for selecting at least one of audio data generated by the sound source or audio data input from the external input terminal,
13. The electronic musical instrument according to claim 12, wherein the recording control unit records the audio data selected by the selection unit in the storage unit. Furthermore, an external input terminal for inputting audio data from outside,
Selecting means for selecting any one of audio data generated by the sound source, audio data input from the external input terminal, and audio data obtained by adding both of them;
13. The electronic musical instrument according to claim 12, wherein the recording control unit records the audio data selected by the selection unit in the storage unit. Furthermore, it has an external input terminal for inputting audio data from outside,
The electronic musical instrument according to claim 10, wherein the recording control unit records audio data input from the external input terminal in the storage unit. 11. The display device according to claim 10, further comprising display means for displaying that data recording can be canceled from when the recording instruction is issued by the recording instruction means to when the first predetermined amount of data is buffered in the buffer. Electronic musical instruments. Furthermore, it has a stop instruction means for instructing to stop recording data,
The electronic musical instrument according to claim 10, wherein the recording control unit records the buffered data in the storage unit after the recording instruction is given by the recording instruction unit until the stop instruction is given by the stop instruction unit. 11. The electronic musical instrument according to claim 10, wherein said storage means is an optical disk. 11. The electronic musical instrument according to claim 10, wherein the storage unit cannot rewrite the data once the data has been recorded. The electronic musical instrument according to claim 10, wherein the storage unit is a CD-R or a CD-RW. 11. The electronic musical instrument according to claim 10, wherein said storage means is a CD-R. 11. The electronic musical instrument according to claim 10, wherein said storage means records data sequentially from a recording start position by sequential access.

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