JP2012018282A - Musical performance file management device, musical performance file reproduction device, and musical performance file reproduction method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve such a problem that a musical performance file uploaded to a video site is not used effectively.SOLUTION: An audio CD meta data receiving section 12 acquires a music identification information for uniquely identifying a music recorded in a recording medium. A musical performance part data receiving section 10 acquires musical performance data obtained by performing a specific part of the music with an instrument. A feature analysis section 16 analyzes the music feature quantity of the musical performance data. A single instrument determination section 18 determines whether the musical performance data is played with a single instrument or not based on the analysis result by the feature analysis section 16. A musical performance file generation section 20 generates a musical performance file formed by associating the music identification information with the musical performance data. When the single instrument determination section 18 determines that the musical performance file is played with the single instrument, a musical performance file registration section 22 registers the musical performance file in a musical performance file database 110.

Description

  The present invention relates to an apparatus for managing a music performance file, and an apparatus and method for reproducing the performance file.

  With advances in audio compression technology such as MP3 (MPEG Audio Layer-3), music can be stored on mobile terminals and portable game consoles and listened to on-the-go, enjoying music stream distribution on home personal computers, music You can now easily process files freely.

  If you're a user of musical instruments, you can play the instrument yourself and shoot it in a video, post it on a video site, and show it to other users. It is also easy to shoot a user's live performance of a musical instrument using a home video or the like and stream it in real time via the Internet.

  The video site shows how various users are playing existing songs and parts of original songs with musical instruments. However, since there is no portal service that centrally manages performance files uploaded to video sites and provides performance files to music lovers or musical instrument players, uploaded performance files are effectively used. There is no current situation.

  The present invention has been made in view of these problems, and an object of the present invention is to provide a technique capable of managing music performance files and efficiently providing them to users.

  In order to solve the above problems, a performance file management apparatus according to an aspect of the present invention includes a music identification information acquisition unit that acquires music identification information that uniquely identifies a recorded music, and a specific part of the music using an instrument. A performance data acquisition unit that acquires performance data obtained by performing, an analysis unit that analyzes a music feature amount of the performance data, and based on an analysis result by the analysis unit, the performance data is a single musical instrument. A determination unit that determines whether or not the musical piece has been played, a performance file generation unit that generates a performance file in which the music identification information is associated with the performance data, and a single instrument played by the determination unit And a registration unit for registering the performance file in a performance file database.

  Another aspect of the present invention is also a performance file management apparatus. The apparatus includes a music identification information acquisition unit that acquires music identification information that uniquely identifies a recorded music, and a performance data acquisition unit that acquires performance data obtained by playing a specific part of the music with an instrument. A performance file generation unit that generates a performance file in which the music identification information is associated with the performance data, a registration unit that registers the performance file in a performance file database, and the performance file registered in the performance file database. And a matching unit that generates matching data associated with each other by music identification information.

  Yet another embodiment of the present invention is a performance file playback device. This apparatus performs performance by specifying a music search condition for a performance file database in which performance data in which performance data obtained by playing a specific part of a music piece with a musical instrument is associated with the music identification information and the performance part identification information. A search unit for searching for a file, a performance part selection unit for selecting a performance file of a part played by another person from the performance files of the music obtained as a result of the search, and another person selected by the performance part selection unit A reception unit that receives performance data of a performance file of a played part, a performance part input unit that inputs performance data that a user has played a specific part of a song using an instrument, and a part that is received by another person It includes a synchronized playback unit that plays back the performance data in synchronization with the performance data of the part that the user performs.

  Yet another aspect of the present invention is a performance file playback method. This method refers to a performance file database in which performance data obtained by associating performance data obtained by playing a specific part of a song with a musical instrument with music identification information and performance part identification information is referred to, and the performance file is referred to as the music identification information. In the same music, a step of generating and displaying matching data in which the performance files are associated with each other by the performance part identification information, and a part of the music performed by another person from the performance files of the displayed music are displayed. The step of selecting a performance file and receiving performance data of a performance file of a part performed by another person, and a user inputting performance data of performing a specific part of a song using an instrument, Playing back in synchronization with the performance data of the played part.

  It should be noted that any combination of the above-described constituent elements and the expression of the present invention converted between a method, an apparatus, a system, a computer program, a data structure, a recording medium, and the like are also effective as an aspect of the present invention.

  According to the present invention, music performance files can be managed and efficiently provided to users.

It is a block diagram of the online session system which concerns on embodiment of this invention. It is a block diagram of the performance file management apparatus mounted in the server of FIG. It is a block diagram of the performance file reproduction | regeneration apparatus mounted in the client of FIG. It is a flowchart which shows the registration procedure of a user's performance file. It is a flowchart which shows the process which a user selects another person's performance file and forms an online session. It is an example of the screen of the matching data displayed on the display of the client of FIG. It is a figure explaining the link structure of a performance file. It is an example of a screen which displays the detail of a performance file.

  FIG. 1 is a configuration diagram of an online session system according to an embodiment of the present invention. In this online session system, a user who plays a specific part of a musical piece with an instrument can form a session online with another person who plays the other part of the same musical piece with the instrument. The online session system includes a server 100, a performance file database 110, an audio CD database 120, a client 200, a musical instrument 210, and a camera 220. The server 100, the client 200, and the audio CD database 120 are connected to the network 240.

  The server 100 has a performance file database 110 and registers in the performance file database 110 a performance file including data obtained by playing a specific part of a music piece with a musical instrument.

  The audio CD database 120 is a database that manages meta information of music recorded on an audio CD (Compact Disc) and music in a compressed file format, and is accessible from the server 100 or the client 200.

  The client 200 is a personal computer, game machine, or portable terminal operated by a user, and has a communication function that can be connected to the network 240 by wire or wirelessly. A musical instrument 210 and a camera 220 are connected to the client 200. A performance by the musical instrument 210 is input to the client 200, and a state in which the user is performing can be input to the client 200 as a moving image.

  FIG. 2 is a configuration diagram of a performance file management apparatus mounted on the server 100. The performance file management device has a function of registering in the performance file database 110 a performance file in which metadata is associated with performance data in which a user has played a specific part of a song using a musical instrument, and a performance file registered in the performance file database 110 Are provided to the user by matching them based on the metadata, and a function of streaming the performance file designated by the user.

  The performance part data receiving unit 10 receives performance data from a client 200 where a user has played a specific part of a song using a musical instrument. The audio CD metadata receiving unit 12 receives, from the client 200, metadata that identifies a song recorded on an audio CD used when the user plays the song. The performance part metadata receiving unit 13 receives metadata for identifying the part of the music piece being played by the user. The performance image data receiving unit 14 receives a moving image of a user who is playing a music piece.

  The feature analysis unit 16 analyzes musical features of the user performance data received by the performance part data receiving unit 10. As an example, the musical feature amount of performance data is extracted from the frequency characteristics of performance data using the analysis technique described in Japanese Patent Application Laid-Open No. 2008-122426. This music analysis technique analyzes the waveform of music, extracts pitch, tempo, time signature, beat, chord progression, key, and music structure, and extracts feature quantities effective for music classification. Then, metadata that can be used as a key for music search is determined based on the extracted feature amount. Examples of metadata include indicators such as music speed and energy, genres such as rock, jazz, and classic, moods of the whole music such as bright, dark, and solemn, and instrument sounds used in performance (piano , Bass, guitar, etc.).

  The single musical instrument determination unit 18 determines whether or not the performance data of the user has been played with a single musical instrument based on the analysis result by the feature analysis unit 16. For example, whether or not the performance data is played by a single instrument such as a guitar, drum, or keyboard can be determined with a certain degree of accuracy by analyzing the type of sound included in the performance data. be able to. Since a musical instrument played with a plurality of musical instruments includes a plurality of types of sounds, it is possible to easily repel a musical instrument played with a plurality of musical instruments. The single musical instrument determination unit 18 gives the determination result to the performance file generation unit 20 or the performance file registration unit 22.

  The performance file generation unit 20 generates a performance file in which the metadata of the music received by the audio CD metadata reception unit 12 is associated with the performance data received by the performance part data reception unit 10. The performance file generation unit 20 can further associate the performance part metadata received by the performance part metadata reception unit 13 with the performance data. In addition, the performance file generation unit 20 can include the moving image of the user performing the performance received by the performance image data reception unit 14 in the performance file.

  The performance file registration unit 22 determines that the performance data generated by the performance file generation unit 20 is the performance file database when the single musical instrument determination unit 18 determines that the performance data of the user has been played by a single instrument. Register at 110. If the single musical instrument determination unit 18 does not determine that the performance data of the user has been played with a single musical instrument, registration of the performance file in the performance file database 110 is rejected.

  If the single musical instrument determination unit 18 does not determine that the performance data of the user has been played by a single musical instrument, the performance file generation unit 20 does not generate a performance file and does not generate a performance file. The performance file may not be given to 22.

  The search unit 23 receives the music search condition from the client 200, searches the performance file database 110 for a performance file that played each part of the music that meets the search condition, and provides the performance matching file 25 to the metadata matching unit 25. The metadata matching unit 25 generates matching data in which performance files meeting the search conditions are associated with each other by metadata. The metadata matching unit 25 associates the performance files with the metadata of the music, and further generates matching data associated with each other with the metadata of the performance part within the same music. The matching data transmission unit 27 transmits the generated matching data to the client 200.

  In response to a request from the client 200, the audio stream transmission unit 24 distributes the performance data of the designated performance file to the client 200 in a stream. In response to a request from the client 200, the video stream transmission unit 26 streams the moving image data of the user included in the specified performance file to the client 200.

  FIG. 3 is a configuration diagram of a performance file playback device mounted on the client 200. The performance file playback device has a function of transmitting performance data obtained by a user playing a specific part of a music piece with a musical instrument to the server 100 and registering the other data of the music piece desired to be played by the user from the performance file registered in the server 100. It has a function of searching and downloading a performance file of a part and reproducing it in synchronization with a user's performance part.

  The user inserts the audio CD 300 into the CD reading device of the client 200 and plays using the musical instrument while listening to the audio CD 300 with headphones or the like. The audio CD reading unit 30 reads the number of tracks of music data called TOC (Table Of Contents) written in the lead track of the audio CD 300, the reproduction time data, and the like, and supplies them to the audio CD metadata acquisition unit 32. The audio CD metadata acquisition unit 32 makes an inquiry to the audio CD database 120 based on the TOC data read by the audio CD reading unit 30, and acquires metadata such as a song title and an artist name. The audio CD metadata acquisition unit 32 transmits this metadata to the server 100.

  The performance part data input unit 52 receives performance data of a specific part of a music piece that is line-input from the musical instrument 210 performed by the user, and transmits the performance data to the server 100. The performance part metadata input unit 51 transmits metadata related to the part of the music played by the user to the server 100. The video input unit 42 receives the moving image data of the user who is performing while being photographed by the camera 220 and transmits it to the server 100.

  On the server 100 side, the performance part data receiving unit 10 receives performance data from the client 200, the audio CD metadata receiving unit 12 receives metadata for identifying the music piece, and the performance part metadata receiving unit 13 receives the performance part. The performance image data receiving unit 14 receives the moving image data of the user who is performing. Based on these data, the server 100 determines whether or not the performance file can be registered in the performance file database 110 as described above.

  The search unit 34 receives a music search condition from the user or receives music metadata recorded on the audio CD 300 from the audio CD metadata acquisition unit 32 and transmits a music search command to the server 100. The search unit 34 receives search results from the server 100 in the form of matching data. In the matching data, the performance files are associated with each other by the metadata of the music, centering on the music designated by the user, and further associated with the metadata of the performance part within the same music.

  The matching data display output unit 38 graphically displays the matching data on a display connected to the client 200. The performance part selection unit 40 provides a graphical user interface (GUI) to assist the user in selecting performance files of parts played by others from the matching data displayed graphically.

  The performance part selection unit 40 provides information on the performance file of the other person selected by the user to the video stream reception unit 44 and the audio stream reception unit 54. The video stream receiving unit 44 and the audio stream receiving unit 54 transmit the performance file information to the server 100 and request the stream distribution of the performance data of the other person included in the performance file and the moving image data of the other person being performed.

  The audio stream receiving unit 54 gives the performance data received from the server 100 to the audio stream synchronized playback unit 56. The audio stream synchronized playback unit 56 receives performance data in which a user has performed a specific part of a song using a musical instrument from the performance part data input unit 52, and the performance of the part performed by another person received from the audio stream reception unit 54. The data is reproduced in synchronism with the data and given to the audio output unit 58. The audio output unit 58 synthesizes the synchronized audio signals and outputs them to the speaker. Thereby, the user can experience as if he / she is having a session with another person.

  Here, the reason why the user can synchronize the performance data obtained by playing the music parts separately will be described. The user is playing a musical instrument while playing and listening to a music CD or MP3 file. If you listen to the same song and perform it, you should be able to synchronize, but if you just have the same song name, you may not be able to synchronize. For example, even if the music is the same, the tempo does not generally match between the music played live and the recording music recorded on the album. Also, some of the same songs are covered by different artists and may be completely different. In a commercial CDDB, the live version and the best album version are managed as different songs even for the same song, and if different artists are covered, they are managed as different songs. Therefore, in this embodiment, the performance data of the user is associated with the metadata of the music identified by the CDDB so that the music that is the source of the performance can be uniquely identified. In the present embodiment, since matching is performed between performance files associated with unique identification information of music, there is no concern that the tempo and the like will not match when the music is synchronized.

  Also, when a user plays his / her part while registering a performance file while listening to performance data of another person's performance file, the other person's performance file is associated with the music identification information identified by the CDDB. If it is a thing, the performance file which the user performed can also be linked | related with the identification information of the same music. Therefore, while listening to one part, playing other parts and repeatedly uploading performance data, if the first performance file is definitely associated with the music identification information uniquely determined by the CDDB, synchronization is performed. There will be no problems such as tempo shifts.

  The video stream receiving unit 44 provides the video stream synchronized playback unit 46 with the moving image data of the other person being played received from the server 100. The video stream synchronous reproduction unit 46 receives the moving image data of the user who is playing from the video input unit 42, reproduces it in synchronization with the moving image data of the other person received from the video stream reception unit 44, and outputs it to the video output unit 48. give. The video output unit 48 combines the synchronously reproduced video data on one screen and displays it on the display. The sense of liveness of the session can be enhanced by synchronizing not only the performance by the music of another person but also the moving image of the other person who is performing.

  FIG. 4 is a flowchart showing a user's performance file registration procedure. In the flowchart shown in FIG. 4, the processing procedure of each part is displayed by a combination of S (acronym for Step) meaning a step and a number. In addition, when a determination process is executed in the process displayed by the combination of S and a number, and the determination result is affirmative, Y (acronym for Yes) is added, for example (Y in S14) If the result of the determination is negative, N (the acronym for No) is added and (N in S14) is displayed.

  A user plays a song recorded on an audio CD on the client 200 or a music file provided in a compressed audio file format such as MP3 format and listens to the song while playing his / her instrument 210. Play the part you want. The output of the musical instrument 210 is input to the client 200 as a line, and the played part is input directly to the client 200 (S10). The user may be in charge of the vocal part, in which case the singing voice is input to the client 200 from a microphone or the like.

  The input performance part data is transmitted to the server 100, and the musical features are analyzed (S12). Based on the analysis result, it is determined whether or not the performance part data has been played with a single instrument (S14). When it is determined that the sounds of a plurality of musical instruments are mixed in the performance part data (N in S14), the performance part data is refused to be registered, and the registration process ends (S16). If the sound of a plurality of musical instruments is mixed in the performance part data, there is a possibility that the data is ripped music CD, so registration is not accepted from the viewpoint of copyright protection.

  As a result of the determination in step S14, if it is determined that the musical instrument is played with a single instrument (Y in S14), the process proceeds to step S18. Using the commercial Gracenote (registered trademark) CDDB function or the like, the metadata of the music is acquired based on the information such as the TOC acquired from the music CD used by the user during the performance (S18). The song metadata includes song identification information, song name, artist name, and the like. A performance file is generated by associating metadata of music with user performance part data (S20). The performance file is registered in the performance file database 110.

  FIG. 5 is a flowchart showing a process in which the user selects another person's performance file and forms an online session.

  The user designates the music being listened to by the audio CD 300, or directly designates the music title or artist name of the music as a search condition, and retrieves the corresponding performance file from the performance file database 110 (S30). The metadata matching unit 25 matches the performance file related to the music specified by the user based on the metadata of the music and the metadata of the performance part and presents it to the user (S32). The function of the metadata matching unit 25 may be provided on the server 100 side or the client 200 side.

  FIG. 6 is a screen example of matching data displayed on the display of the client 200. An example is shown in which a user searches for a performance file using the title “Ishino Leila”, artist name “Eric Clampton” and performance part “guitar” as search conditions. Files (symbols 70a, 70b, etc.) in which the part of “Itoshi Leila” is played on a guitar are linked to each other to form a group denoted by reference numeral 80. These performance files are directly or indirectly associated with each other based on the commonality of playing the guitar part of the music identified as the same music in the CDDB. When another user B plays a performance file of a user A's musical instrument while listening to the same musical instrument, the performance file of the user B is directly linked to the performance file of the user A.

  The performance file that played "Ishino Leila" with other instruments is also displayed on the same screen. Similar to the performance file of the guitar part, the performance files of the drum part of “Itoshi Leila” (reference numerals 72a, 72b, etc.) are linked to each other to form a group indicated by reference numeral 82. Also, performance files (reference numerals 74a, 74b, etc.) of the keyboard part of “Itoshi Leila” are linked together to form a group indicated by reference numeral 84.

  For the same musical piece “Itoshi Leila”, the guitar part performance file group 80, the drum part performance file group 82, and the keyboard part performance file group 84 are linked to each other. . The groups of performance files are associated with each other based on the commonality of playing music that is identified as the same music in the CDDB. The performance files in each group are related directly or indirectly across the groups. When a user A plays the same song on a drum while another user B listens to a file in which "Ito no Leila" is played on the guitar, the user B's drum performance file is directly in the user A's guitar performance file. Linked together.

  In addition, on the same search screen, a performance file of “Change the World” covered by Eric Clampton is also linked and displayed. The performance files (“76a” and “76b”) of the drum parts of “Change the World” are linked to each other to form a group indicated by reference numeral 86. Also, the performance files (reference numerals 78a, 78b, etc.) of the keyboard part of “Change the World” are linked together to form a group indicated by the reference numeral 88.

  The performance group 86 of the drum part of “Change the World” is associated with the performance group 82 of the drum part of “Itoshi Leila” because the artists are the same and the instruments used for the performance are the same. Because. For the same reason, the performance group 88 of the keyboard part of “Change the World” is associated with the performance group 84 of the keyboard part of “Itoshi Leila”.

  FIG. 7 is a diagram for explaining a link structure of performance files. Reference numeral 70 denotes a performance data file in which the user A plays “Ishi no Eira” on the guitar. The music ID is “abc”, the title is “Ishi no Leila”, the artist name “Eric Clapton”, and the user name. "A" and performance part "guitar" are attached. As described in the screen example of FIG. 6, performance files of different musical instruments of the same music are linked to each other. Reference numeral 72 is a file of data in which the user B plays the “Itoshi Leila” on the drum, and reference numeral 74 is a file of performance data in which the user C plays the “Itoshi Leila” on the keyboard. The same number 70 is linked to a performance data file played by the user A on the guitar. Here, it is noted that the identity of music is determined not by matching the title and artist name, but by matching the music IDs identified in the CDDB. This is because even the same song has a slightly different tempo between live performance recording and CD recording in the studio.

  Reference numeral 78 denotes a performance data file in which the user D plays “Change the World” on the keyboard. As metadata, the music ID “def”, the title “Change the World”, the artist name “Eric. Clapton ", user name" D ", and performance part" keyboard "are included. Reference numeral 78 denotes a file of performance data in which the user E plays “Change the World” on the drum. As metadata, the music ID “def”, the title “Change the World”, the artist name “Eric. “Clapton”, user name “E”, and performance part “drum” are included.

  The keyboard performance file 78 of “Change the World” is linked to the keyboard performance file 74 of “Itoshi Leila”. This is because even if the songs are different, the artists are common and the performance parts are the same. The keyboard performance file 78 of “Change the World” and the drum performance file 76 of “Change the World” are linked to each other because they are performances of different musical instruments having the same music ID. The Furthermore, the drum performance file 76 of “Change the World” is linked to the drum performance file 72 of “Itoshi Leila”. The songs are different, but the artists are common and the performance parts are the same.

  FIG. 8 is an example of a screen that displays details of a performance file. When the user selects one of the guitar performance files (reference numeral 70a) of “Itoshi Leila” on the search screen of FIG. 6, a window for providing detailed contents of the file is displayed as indicated by reference numeral 92. Detailed information including the metadata of the performance file is displayed in this window. For example, the title, artist name, user name, performance part, performance time, number of performances, evaluation, comment, and moving image or still image of the user who is performing are displayed. “Performance count” is the number of times this performance file has been selected and played by another user. “Evaluation” is a value that other users have evaluated the quality of the performance file in, for example, five levels. “Comment” is a message by the user who uploaded this performance file.

  When the preview button 94 is selected, the performance data of this performance file can be viewed. At that time, the moving image of the user who is playing may be reproduced.

  The user can finally determine the performance file to be used for band organization with reference to the detailed screen of the performance file, and compose a session.

  Reference is again made to FIG. While browsing the matching data displayed graphically, the user finds and selects a performance file of another person playing a part other than his / her part of the designated music (S34). For example, when a user is playing an electric guitar and wants to form a session with drums and pianos, he finds and selects a performance file in which each person plays the drum and piano parts of the same song.

  Performance data and moving image data included in another person's performance file are received from the server 100 (S36). An audio signal is generated by synthesizing a part played by the user's own musical instrument 210 and a part played by another person with another musical instrument, and the moving image of the user being played is synchronized with the moving image of the other person. The generated video signal is generated (S38). The synthesized audio signal is output to the speaker, and the synthesized video signal is output to the display (S40). This makes it possible to create a session online as desired by the user.

  Hereinafter, various usage modes of the online session system according to the present embodiment will be described. There are four types of online session modes:

(1) Cover session mode As described above, this is because the user plays some parts of the existing music searched for by the artist name, title name, etc., and the remaining parts use other people's performance files. This is a mode for composing a session that covers existing music with the composition of.

(2) Original Session Mode In this mode, a session is configured online by sharing a performance file of an original musical piece performed by a user using an instrument with the server 100. When the number of participating users increases, the number of original music uploads increases, and a session can be created with free organization of the original music.

(3) Karaoke session mode In this mode, a favorite knitting session is configured for a favorite music piece, and the singing voice is superimposed with the organized band as the back. The user can enjoy the feeling of singing in front of a live band.

(4) Produce Mode In this mode, a performance group is virtually produced by organizing a favorite unit or band from the performance files registered in the server 100. It is also possible to register and publish the produced organization in the server 100. When the user selects the published session organization, the performance data of the part that organizes the session is streamed in real time. By recording the number of times the published session organization has been previewed or downloaded, an assessment as a producer is calculated.

  In addition to these online session modes, a practice mode may be provided as a mode for supporting musical instrument beginners. When existing music data such as a CD sound source is analyzed, it is possible to specify a musical instrument being used and automatically generate chords and tab (TAB) music for playing with the musical instrument. As the user listens to music from a CD or the like, chords and tablature are displayed to support the performance of the instrument. In particular, a user who cannot read a musical score can support performance by displaying a tablature on the screen or graphically displaying a string to be played. Alternatively, the client 200 may support the performance of the musical instrument by searching the server 100 for a performance file that is played by the user's musical instrument and playing it as a model.

  As described above, the online session system of this embodiment builds a business model that clears the risk of copyright infringement by refusing to register performance files that are judged to have been played by multiple instruments. can do. In addition, since the performance files are matched based on the music identification information uniquely specified by CDDB or the like, it is possible to distinguish between recordings of live performances and those recorded in the studio for CDs even with the same song name. , Can cope with the difference of artists covered. Thereby, when comprising an online session, the performance parts of the same music can be reliably combined with each other, and no deviation occurs during synchronization.

  The present invention has been described based on the embodiments. The embodiments are exemplifications, and it will be understood by those skilled in the art that various modifications can be made to combinations of the respective constituent elements and processing processes, and such modifications are within the scope of the present invention. .

  In the above embodiment, the example in which the performance data of the specified performance file is streamed to the client 200 in response to a request from the client 200 has been described. However, the client 200 receives the performance file from the server 100 as a stream. You may receive downloads as well.

  In the above embodiment, the example in which the metadata for identifying the music is acquired from the CDDB based on the TOC of the audio CD when the user is listening to the music recorded on the audio CD has been described. Metadata for identifying music is recorded not only on music CDs but also on DVDs and BDs when playing music or video recorded on DVDs (Digital Versatile Discs) and BDs (Blu-ray Discs) (trademarks). Further, based on data such as the number of tracks of music data and playback time, metadata for identifying music may be acquired from a music database such as CDDB. In addition, when reproducing ripped MP3 files or AC3 audio files from recording media such as CDs, DVDs, and BDs, metadata such as CDDB is used to identify metadata for identifying music based on data such as playback time. It may be obtained from a database.

  100 server, 110 performance file database, 120 audio CD database, 200 client, 210 musical instrument, 220 camera, 300 audio CD, 10 performance part data reception unit, 12 audio CD metadata reception unit, 13 performance part metadata reception unit, 14 Performance image data reception unit, 16 feature analysis unit, 18 single instrument determination unit, 20 performance file generation unit, 22 performance file registration unit, 23 search unit, 25 metadata matching unit, 27 matching data transmission unit, 30 audio CD reading Section, 32 audio CD metadata acquisition section, 34 search section, 38 matching data display output section, 40 performance part selection section, 42 video input section, 44 video stream reception section, 46 video stream synchronized playback section, 51 performance part metadata input section, 52 performance part data input section, 54 audio stream reception section, 56 audio stream synchronized playback section.

Claims (9)

A music identification information acquisition unit for acquiring music identification information for uniquely identifying the recorded music;
A performance data acquisition unit for acquiring performance data obtained by playing a specific part of a song with an instrument;
An analysis unit for analyzing a music feature of the performance data;
Based on the analysis result by the analysis unit, the performance data is a determination unit that determines whether or not the performance data is played by a single instrument,
A performance file generator for generating a performance file in which the music identification information is associated with the performance data;
A performance file management apparatus comprising: a registration unit that registers the performance file in a performance file database when the determination unit determines that the performance file is played with a single instrument.   When it is determined by the determination unit that the performance data has been played by a plurality of musical instruments, the registration unit determines that the performance data has a copyright infringement, and the performance file includes the performance data. 2. The performance file management apparatus according to claim 1, wherein registration to the performance file database is rejected. A performance part identification information acquisition unit for acquiring performance part identification information for identifying a part of the music piece played by the instrument;
The performance file management device according to claim 1, wherein the performance file generation unit generates a performance file in which the music identification information and the performance part identification information are associated with the performance data. A performance image acquisition unit that acquires moving image data of a user who plays a specific part of the music piece with a musical instrument;
The performance file management apparatus according to claim 1, wherein the performance file generation unit includes moving image data of the user in the performance file. A music identification information acquisition unit for acquiring music identification information for uniquely identifying the recorded music;
A performance data acquisition unit for acquiring performance data obtained by playing a specific part of a song with an instrument;
A performance file generator for generating a performance file in which the music identification information is associated with the performance data;
A registration unit for registering the performance file in a performance file database;
A performance file management apparatus comprising: a matching unit that generates matching data in which the performance files registered in the performance file database are associated with each other by the music identification information. A performance part identification information acquisition unit for acquiring performance part identification information for identifying a part of the music piece played by the instrument;
The performance file generation unit generates a performance file in which the music identification information and the performance part identification information are associated with the performance data,
The matching unit associates the performance files registered in the performance file database with the music identification information, and generates matching data in which the performance files are associated with the performance part identification information in the same music. 5. The performance file management device according to 5. A performance file database in which performance data in which performance data obtained by playing a specific part of a music piece with an instrument is associated with the music identification information and the performance part identification information is specified, and the performance file is searched by specifying the music search conditions. A search section;
A performance part selection unit for selecting a performance file of a part played by another person from the music performance files obtained as a result of the search;
A receiving unit for receiving performance data of a performance file of a part performed by another person selected by the performance part selection unit;
A performance part input unit for inputting performance data in which a user plays a specific part of a song using an instrument;
A performance file reproducing apparatus comprising: a synchronous reproduction unit that reproduces the received performance data of a part played by another person and the performance data of a part performed by a user. Referring to a performance file database in which performance data in which performance data obtained by playing a specific part of a music piece with an instrument is associated with music identification information and performance part identification information, the performance files are associated with each other by the music identification information; Within the same music, generating and displaying matching data in which the performance files are associated with each other by the performance part identification information; and
Selecting a performance file of a part performed by another person from the performance files of the displayed music, and receiving performance data of the performance file of the part performed by another person;
A performance file reproduction comprising: a step of inputting performance data obtained by a user playing a specific part of a song using a musical instrument and reproducing the performance data in synchronization with the performance data of a part performed by another person received. Method. Referring to a performance file database in which performance data in which performance data obtained by playing a specific part of a music piece with an instrument is associated with music identification information and performance part identification information, the performance files are associated with each other by the music identification information; Within the same music, a function for generating and displaying matching data in which the performance files are associated with each other by the performance part identification information, and
A function for selecting a performance file of a part played by another person from the performance files of the displayed music, and receiving performance data of the performance file of the part performed by another person;
A function for allowing a computer to realize a function in which a user inputs performance data obtained by playing a specific part of a song using a musical instrument and reproduces the received data in synchronization with the performance data of the part played by another person. program.

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