JP2005208154A - Musical piece retrieval system and musical piece retrieval program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problems of a musical piece retrieval system that (1) the system is adapted to provide a user with information helpful for purchasing music software etc., by retrieving the information on the musical piece desired by the user and cannot heretofore support playing, such as automatic playing of an accompaniment part by muting the melody part of the retrieved musical piece and (2) the retrieval of music data is heretofore infeasible unless a music name is known in an electronic musical instrument having a minus one function. <P>SOLUTION: When the user plays the phrase of the melody, the system detects the pitch and playing tempo and retrieves the corresponding music data from the melody group of a music DB. The system is constituted to display the score within the retrieved music data and to read the accompaniment data corresponding to the tempo speed of the melody to be played by the user, then to automatically play the same and therefore the user can enjoy ensemble playing even when the user cannot play the accompaniment part. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a music search device and a music search program.

Conventionally, a device having a function of searching for music or a musical instrument having a function of minus one performance is known.
For example, when the user sings a melody of a desired song, the pitch and time data included in the singing voice are extracted and transmitted to the server via the communication line. The music information that matches the extracted data sent from the music data stored in the server is searched and provided to the user. (For example, see Patent Document 1)
Also, in an electronic musical instrument that automatically plays multiple parts, a specific part played by the user is selected from the multiple parts, and only the musical tone of this part is muted, and other parts are automatically played. It is configured. (For example, see Patent Document 2 and Patent Document 3)

Japanese Patent Application Laid-Open No. 2002-14974 (pages 1 to 8 and FIGS. 1 and 2) Japanese Patent Laid-Open No. 10-39864 (pages 1 to 18, FIGS. 1 to 17) Japanese Patent Laid-Open No. 5-188156 (pages 1 to 15 and FIGS. 1 to 11)

When a user sings or plays a part of a melody of a song desired by a user, the conventional music search device searches for song information related to the song and pronounces the melody part of the song or all parts of the music. It has a configuration for allowing the user to audition and confirming whether or not the sampled music is the music desired by the user.
Such a conventional music search device searches for music information desired by the user and helps the user to purchase the music software, etc. There is a problem of providing guidance or a trial listening service, and cannot support performance such as automatically playing the accompaniment part by muting the melody part of the searched music.
In addition, in the conventional electronic musical instrument having the minus one function, when a user selects and plays a desired musical piece, an operator is selected from a plurality of pieces of musical piece information stored in a memory in the electronic musical instrument. Since the melody is known, the desired song cannot be searched unless the song title is known.

According to the first aspect of the present invention, music data storage means for storing a plurality of data groups composed of music including melody data and accompaniment data and musical score data corresponding to the music, and generated in response to a musical instrument performance operation. A performance operation data detecting means for detecting a pitch data group, a pitch data group detected by the performance operation data detecting means and a plurality of melody data stored in the song data storage means are collated, Music data search means for searching for music containing melody data having a pitch data group, and music score display control means for reading music score data corresponding to the music searched by the music data search means and displaying the music on the display means A musical tone generator that reads accompaniment data included in the music searched by the music data search means and generates a musical sound of the accompaniment Characterized by comprising a stage, a.
With this configuration, if a user plays a phrase that is part of a melody without knowing the name of the song, the user searches for the desired song data and displays the score of the song. Since music accompaniment data is searched and automatically played, melody performance and ensemble performance performed by the user are possible.

  According to a second aspect of the present invention, the music search device further includes a tempo calculation means for calculating a performance tempo based on the performance operation speed of the musical instrument, and the accompaniment data stored in the music data storage means is the performance data. The musical tone generation means selects and reads out the accompaniment pattern data stored in the song data storage means based on the performance tempo calculated by the tempo calculation means. The musical tone of the accompaniment pattern data may be generated.

  According to a third aspect of the present invention, the song data search means generates a phrase based on the detected pitch data, and collates this phrase with each of a plurality of melody data stored in the song data storage means. Alternatively, a song of melody data having this phrase may be searched.

  As described in claim 4, the present invention can be implemented by programming the operation procedure of each means described above and causing a computer to execute it. At that time, the computer program can be supplied to the computer through a disk-type recording medium such as a hard disk, various memories such as a semiconductor memory or a card-type memory, or various program recording media such as a communication network.

  When a part of a melody of a music desired by a user is played, the music search device of the present invention searches for the corresponding music from a plurality of music information stored in the memory, and is included in this music And the accompaniment part is automatically played, so if the user has forgotten the name of the song he wants to play, or if the accompaniment part can't be played, the user will be able to display the score for that song. The effect is that an ensemble can be enjoyed by automatic accompaniment.

  When a part of the melody of the desired song is played, the music corresponding to this melody is searched, the score included in this song is displayed, and the accompaniment part is automatically played.

FIG. 1 shows a block diagram of the overall configuration of the present invention in an embodiment of the present invention.
The music search device of this embodiment is exemplified as an example applied to an electronic keyboard instrument.
The CPU 101 is connected to each circuit and device to be described later constituting the music search device via the bus line 108, and controls various functions by exchanging various data.

  The ROM 102 stores a program for the CPU 101 to execute various functions according to a predetermined procedure.

  The RAM 103 stores a plurality of data areas for temporarily storing various data, a work area for storing various registers used for processing to be described later, and a plurality of music data database areas (hereinafter referred to as a music DB). Have

The communication device 104 is an apparatus used when searching for music to be searched from an external server via a public line when the music to be searched cannot be found from the RAM 103.
When the desired music is retrieved from an external server, the music score data, melody data, and accompaniment data are received. The distributed data is stored in the song DB of the RAM 103.

  Next, the operator group 105 includes a plurality of switches, and includes a power switch, a music data reproduction start / stop switch, a reset switch for redoing the music DB search, a switch for terminating the music DB search processing, a music DB search mode / auto A mode switch for selecting one of the performance modes is provided.

The display device 106 displays the musical score data of the searched music.
The musical sound generation device 107 is provided with, for example, an electronic keyboard instrument.
This electronic keyboard instrument is composed of a keyboard, a tone generator circuit, a sound generator, and the like, and generates a musical sound signal according to a key operation to generate the musical sound.

Next, details of the data configuration in the RAM 103 will be described with reference to FIG.
In the RAM 103, a plurality of song data areas SONG (0) to SONG (K) are provided. These (0) to (K) correspond to song numbers.
For example, the SONG (0) area includes a musical score (0), a melody data area MELODY (0) corresponding to the melody part, and accompaniment data areas BANSO (0) (0) to BANSO (0) corresponding to the accompaniment part. (M).
This accompaniment data group is composed of a plurality of accompaniment pattern data areas corresponding to the speed of the performance tempo.

The melody data area MELODY (0) is composed of the note areas of the note (0) to the note (L), and the accompaniment data area BANSO (0) (0) is the note area of the note (0) to the note (S). Consists of.
The pitch (0) and note length (0) data are stored in the note (0) area of the melody data.
In the accompaniment data note (0) area, pitch (0) and note length (0) data are stored.

Next, basic processing of the present invention will be described with reference to FIG.
First, when a power switch provided in the operator group 105 is turned on, the CPU 101 initializes each circuit of the entire music search apparatus (S301).
Then, “0” indicating the music DB search mode is set in the mode flag MODE (S302).
It is determined whether or not the mode flag MODE indicates “0” (S303).

Here, if the MODE indicates “0”, a song DB search process desired by the user is executed from the plurality of song data SONG (0) to SONG (K) shown in FIG. 2 (S304). If MODE does not indicate "0", automatic performance processing is executed.
When the execution of the song DB search process and the automatic search process is completed, the process returns to S303 and the process corresponding to the mode is repeated.

<About song DB search processing>
Here, the operation when the music DB search processing mode shown in S304 in FIG. 3 is selected will be described with reference to FIGS.
First, an initial screen for searching for music is displayed on the display screen in the display device 106 (S401 in FIG. 4).
Then, it is determined whether or not a start switch for starting a search for music data desired by the user from among a plurality of music data stored in the RAM 103 is turned on (S402).

If it is not detected that the start switch is turned on, the process proceeds to S513 in FIG. 5 to determine whether or not the switch for ending the song DB search process is turned on. However, the start switch is detected to be turned on. Then, after setting “0” to the counter n for counting the number of times of key pressing (S403), the phrase data area PHRASE [n] is cleared (S404), and the register t [n] for storing the key pressing time is stored. After clearing (S405), next, at the start of key scanning, counting of the key pressing time is started by a timer (S406).
Next, a plurality of keys provided in the tone generator 107 are sequentially scanned (S407), and it is detected whether any key is turned on or off, or has not changed at all (S408). .

When it is detected that one of the keys is turned on, this key number is stored in the phrase data area PHRASE [n] (S409), and the sound source provided in the tone generator 107 is recorded. It is instructed to generate and generate a musical tone having a pitch corresponding to the key number (S410).
Then, the value of the key pressing time counted by the timer is stored in the register t [n] (S411), and the timer count value is cleared in preparation for the measurement of the key pressing time to be pressed next ( S412), the process proceeds to S501 in FIG. 5 and the counter n for counting the number of key presses is incremented by one, and then the process proceeds to S502.

On the other hand, if it is detected in step S408 that any key has been turned off, the CPU 101 instructs the sound source to mute the musical tone being generated (S413), and then in FIG. The process proceeds to S502.
Further, if ON / OFF is not detected for any key in the process of S408, the process proceeds to S502 in FIG.
In the process of S502 in FIG. 5, it is determined whether or not the song DB search end switch is turned on.

  If it is not detected that the end switch is turned on, the process returns to the key scanning process S407 in FIG. 4 and the phrase data input is repeated. If the end switch is turned on, the pitch of the key pressed is detected. The value of the counter n that counts the number is stored in the register N (S503), and the phrase search process is executed based on the pitch and the number of pitches of the inputted phrase (S504).

<About phrase search processing>
Here, the operation of the phrase search process will be described in detail with reference to FIG.
First, “0” indicating the head music number is set in the register K for storing the music data number, and “0” indicating the head number is set in the register M for storing the accompaniment pattern number, and the music is set in the mode flag MODE. “0” indicating the DB search is set (S601).
Next, an initial value “0” is set in the register m indicating the read address of the music data (S602).

Next, the start address of the area MELODY that stores the melody data in the song DB SONG (K) is stored in the register AD (S603).
Then, “0” is set to the counter n for counting the number of pitches (S604), and the area NOTE (n) is used to search the pitches of the notes stored at the address (AD + m) of the melody data. (S605).

It is determined whether the pitch stored in the area NOTE (n) to be searched is equal to the pitch in the area PHRASE (n) storing the phrase data (S606).
Here, if it is determined that the pitch stored in NOTE (n) is equal to the pitch stored in PHRASE (n), the counter n is incremented by one (S607), and this comparison is performed. It is determined whether or not the value of the counter n indicating the number of pitches has reached the value indicated in the area N indicating the number of pitches pressed during phrase input (S608).
Here, when it is detected that the value indicated by the counter n has reached the value indicated in the area N, “1” indicating the mode of the automatic performance processing is set in the mode flag MODE, and this processing ends (S609). ).

On the other hand, if it is not determined in step S606 that the pitch indicated in the pitch comparison area NOTE (n) is equal to the pitch indicated in the phrase data area PHASE (n), the register K that stores the song data number is stored in the register K. The indicated value is incremented by one (S610), and it is determined whether or not the value indicated by the register K exceeds the total number of song data stored in the song DB (S611).
Here, if it is not detected that the value indicated by the register K exceeds the total number of music data, the process returns to S602 to move to the next music data number in the music DB and have the same phrase input by pressing the key. Search for melody data.
On the other hand, when it is detected that the value indicated by the register K exceeds the total number of music data in the music DB, this process is terminated. In such a case, the user requests the search and distribution of the corresponding song data to the external song DB server via the communication device 104.

If it is not detected in step S608 that the value of the counter n for counting the pitch reaches the value indicated in the area N indicating the number of pitches pressed by the phrase input, the melody data is read. The register m for storing the address is incremented (S612).
The address value indicated by the register m indicates the number of notes of the melody data.
Then, it is determined whether or not a value obtained by adding the value indicated by the register m and the number of pitches pressed at the time of inputting a phrase shown in the area N exceeds the number of notes in the area MELODY (L) of the melody data ( S613).
If it is detected that the total value of the value shown in the register m and the value shown in the area N exceeds the number of notes in the melody area MELODY (L), the process proceeds to S610 to search for the next music data. go to.

On the other hand, if it is not detected that the total value of the value shown in the register m and the value shown in the area N exceeds the number of notes in the melody area MELODY (L), the process returns to the process of S604 and the next address of the melody data is set. Go to search for stored pitches.
In this way, the phrase search process is based on the pitch value corresponding to the melody of the phrase corresponding to the number of key presses performed by the user and the data of the pitch number, and the corresponding melody data is stored in the music DB. The search is performed sequentially.

Here, it returns to operation | movement description of the music DB search process of FIG. 5 again.
When music data corresponding to the performance of the phrase is searched, it is next determined whether or not the mode flag MODE is “0” indicating the music DB search processing (S505).
If it is not detected that this MODE is “0” indicating the song DB search process, a message “Please switch to the song DB search mode” is displayed on the display screen for a certain time and the mode is displayed to the user. After prompting the switching (S512), the process returns to S401 in FIG. 4 and starts again from the beginning.
On the other hand, when it is detected that the MODE is “0” indicating the song DB search process, accompaniment data corresponding to the user's key pressing operation is searched (S506).

<Accompaniment search process>
Here, the operation of the accompaniment search process will be described in detail with reference to FIG.
First, “0” is set in the area T for storing the accumulated value of the key pressing time (S701), and “1” is set in the counter n for counting the number of pitches pressed (S702).
Then, the value indicated by the timer t (n) for counting the key press time for each key press is added to the area T (S703), the counter n is counted up (S704), and the value indicated by the counter n is the phrase. It is determined whether or not the total pitch number pressed at the time of input has reached the value indicated by the area N for storing (S705).

If it is not detected that the value indicated by the counter n has reached the value indicated by the area N, the process returns to S703.
When it is detected that the value indicated by the counter n has reached the value indicated by the area N, the total value of the key pressing time indicated by the area T is divided by the number of pitches (N−1) pressed at this time. To do. As a result of the calculation, the average key pressing time value required per key pressing, that is, the average performance tempo speed is overwritten in the area T (S706).

The accompaniment pattern (T) is selected from a performance tempo conversion table provided in advance in the RAM 103 in correspondence with the area T indicating the average key pressing time value.
Then, the value indicated by the accompaniment pattern (T) is set in the register for designating the read address of the song data, and the present process is terminated (S707).

When this accompaniment search process ends, the process returns to the song DB search process of FIG.
First, the music data read address determined based on the performance tempo calculated in the accompaniment search process is read from the register m and stored in the register M (S507).
Then, the score (K) data is read from the searched song data area SONG (K) and displayed on the display unit provided in the display device 106 (S508), and the song data area BANSO [ The accompaniment data retrieved by the accompaniment retrieval process from K] [M] is transferred to the area BANSODAT (S509).

Next, it is determined whether or not the reset switch for redoing the music DB search process is turned on (S510).
Here, when it is detected that the reset switch is turned on, the entire work memory is cleared, and the process returns to S401 in FIG. 4 again (S511).
On the other hand, if it is not detected that the reset switch is turned on, it is determined whether or not the switch that ends the music DB search process is turned on (S513).

  If it is detected that the end switch is turned on, "1" indicating the automatic performance process is set in the mode flag MODE and this process is terminated (S514). If the end switch is not turned on, it is shown in FIG. The process returns to S402.

  In this way, in the music DB processing, when a phrase corresponding to a part of any melody desired by the user is played, the pitch and the sound duration corresponding to these performance operations are detected and this musical tone is played. Pronounce. The music data of the melody having this phrase is searched from the music DB and this score is displayed, and the average tempo speed when this phrase is played is calculated to extract the accompaniment pattern data corresponding to this tempo. ing.

<About automatic performance processing>
Next, the operation of the automatic performance process shown in S305 in FIG. 3 will be described with reference to FIGS.
First, when it is detected that the mode flag MODE is “1” indicating the automatic performance process, the musical score of the music data searched by the music DB search process is reproduced and displayed on the display screen provided in the display device 106. Displays the initial screen consisting of the staves.

Then, it is determined whether or not the start switch for automatically starting the music data provided in the operator group 105 is turned on (S802).
If it is not detected that the start switch is turned on, the process proceeds to step S901 in FIG. 9. If it is detected that the start switch is turned on, the accompaniment data extracted corresponding to the performance tempo is detected. Is stored in the area BANSODAT (S803).

If it is not detected that accompaniment data is stored in this area BANSODAT, a warning message “Could not find the corresponding song” is displayed on the display screen (S811), and the process of S1001 in FIG. Proceed to
When it is detected that accompaniment data is stored in this area BANSODAT, the musical score (N) data stored in the song data area SONG (N) retrieved from the song DB is read and displayed. The score is displayed on the top (S804).

Next, the value indicated by the register m for storing the start address of the accompaniment data retrieved according to the performance tempo is stored in the area AD (S805).
Then, the pitch is read from the note data (AD) in the area BANSO (K) (M) of the accompaniment data (S806), the pitch is stored in the area NOTE (S807), and the note data (AD) The note length read from the sound is stored in the area TIME (S808), and then the musical sound is generated and generated for the sound source in the musical sound generation device 107 based on the pitch stored in the area NOTE. An instruction is given (S809).
Then, “1” indicating the start of automatic performance is set in the automatic performance start flag STF (S810), and then the process proceeds to S901 in FIG.

Next, it is determined whether or not the start flag STF is “1” indicating the start of automatic performance (S901 in FIG. 9).
If the start flag STF does not indicate “1”, the process proceeds to step S1001 in FIG. 10. If the STF indicates “1”, the timer for measuring the key pressing time is the smallest unit. It is determined whether or not the elapsed time is measured (S902).

When it is detected that the timer has measured the elapsed time in the minimum unit, the minimum unit time is decreased by a value of “1” with respect to the key pressing time stored in the note time data area TIME. (S903).
Then, it is determined whether or not the key pressing time stored in this area TIME has reached “0” (S904).

When it is detected that the key pressing time stored in the area TIME has reached “0”, the accompaniment data read address AD is incremented (S905), and the note data is based on this address AD. However, if it is not detected that the key pressing time stored in the area TIME has reached “0”, the process proceeds to S911.
If it is not detected in step S902 that the minimum time has elapsed, the process proceeds to step S911 to determine whether a switch for stopping the automatic performance process is turned on.

If it is detected that the stop switch is turned on, the sound source is instructed to mute the musical sound currently being generated (S912). If it is not detected that the stop switch is turned on, the process proceeds to S1001 in FIG. .
Next, in step S907, it is determined whether or not note data is stored at an address AD for storing accompaniment data.

  When it is detected that note data is present in the accompaniment data area, the pitch data indicated by the note data is stored in the area NOTE (S908), and the note length data indicated by the note is stored. After storing in the area TIME (S909), the pitch data stored in the area NOTE is sent to the tone generator of the tone generator to instruct that the tone be generated and pronounced (S910), and then the process of S901 is performed again. Return.

On the other hand, when it is not detected in the processing of S907 that the note data is stored at the address AD for storing the accompaniment data, the sound source is instructed to mute the sound being generated (S912).
Then, “0” indicating the end of the automatic performance process is set to the start flag STF, and the process returns to S801 in FIG.

Next, when accompaniment data is not stored in the area BANSO (K) (M), or when the minimum unit time has not been reached and the stop switch is not pressed, or If the flag STF is “0” indicating that the automatic performance is off, the process proceeds to S1001 in FIG. 10 and the keyboard provided in the musical tone generator is scanned.
By this key scanning, it is determined whether any key is turned on / off or not changed at all (S1002).

When it is detected that one of the keys is turned on, the turned-on key number is stored in the area KEY (S1003), and the tone data stored in the KEY is sent to the sound source to play the musical sound. It is instructed to generate and pronounce (S1004).
Next, it is determined whether or not the automatic performance processing end switch is turned on (S1005).
When it is detected that the end switch is turned on, “0” indicating the music DB search is set in the mode flag MODE, and this process is terminated (S1006).

On the other hand, when it is detected by key scanning that one of the keys is turned off, the key number is stored in the area KEY (S1007), and the sounding tone corresponding to the pitch is muted to the sound source. (S1008), the process proceeds to S1005.
Also, when it is determined by key scanning that none of the keys are changed, the process proceeds to S1005.
On the other hand, if it is not detected that the end switch is turned on, the process returns to S802 in FIG. 8 to detect the on state of the start switch.

As described above, in this automatic performance processing, the accompaniment data selected in accordance with the performance tempo of the user is read out from the song DB of the song data and is pronounced, and the automatic accompaniment is used while the tone is being produced. When a person performs a performance operation on the keyboard, the played musical sound is generated and pronounced.
Therefore, the user can enjoy the ensemble performance without playing the accompaniment part because the melody part's musical tone by his / her performance and the automatic accompaniment musical tone that matches the performance tempo are played simultaneously. It becomes.

  As described above, according to the present invention, when a phrase that is any part of a melody played by the user is played, the corresponding song data is searched from the pitch included in the phrase and the melody data group in the song DB. However, the present invention is not limited to this, and the corresponding song data and accompaniment data may be searched based on the length of time between the sounds of the phrase that has been played and operated. Music data and accompaniment data may be searched.

  In the present invention, the speed of the tempo performed by the user is calculated, and accompaniment data corresponding to this value is automatically searched and played. However, the present invention is not limited to this. The accompaniment data may be displayed on the display screen and selected by the user.

  Moreover, it can implement by programming the operation | movement procedure demonstrated in the said embodiment, and making a computer perform. At that time, the computer program can be supplied to the computer through a disk-type recording medium such as a hard disk, various memories such as a semiconductor memory or a card-type memory, or various program recording media such as a communication network.

The block diagram of the whole structure of this invention is shown. The data structure in music DB in the storage area of RAM shown in FIG. 1 is shown. The main flowchart in the music search device of this invention is shown. The music DB search process shown by FIG. 3 is shown. (Part 1) The music DB search process shown by FIG. 3 is shown. (Part 2) The phrase search process shown by FIG. 5 is shown. The accompaniment search process shown by FIG. 5 is shown. The automatic performance process shown by FIG. 3 is shown. (Part 1) The automatic performance process shown by FIG. 3 is shown. (Part 2) The automatic performance process shown by FIG. 3 is shown. (Part 3)

Explanation of symbols

101 CPU
102 ROM
103 RAM
104 Communication Equipment 105 Operator Group 106 Display Device 107 Musical Sound Generation Device

Claims (4)

Music data storage means for storing a plurality of data groups including a music including melody data and accompaniment data and score data corresponding to the music;
Performance operation data detection means for detecting a pitch data group generated in response to the performance operation of the instrument;
The pitch data group detected by the performance operation data detection means and the plurality of melody data stored in the song data storage means are collated to search for music containing the melody data having this pitch data group. Song data search means;
A score display control means for reading out the score data corresponding to the music searched by the song data search means and displaying the score on the display means;
A musical sound generating means for reading accompaniment data included in the music searched by the music data searching means and generating a musical sound of the accompaniment;
A music search device comprising: The music search device further comprises a tempo calculation means for calculating a performance tempo based on the performance operation speed of the musical instrument,
The accompaniment data stored in the song data storage means comprises a plurality of types of accompaniment pattern data corresponding to the performance tempo,
The musical tone generation means selects and reads out the accompaniment pattern data stored in the song data storage means based on the performance tempo calculated by the tempo calculation means, and generates a musical tone of the accompaniment pattern data. The music search device according to claim 1, characterized in that:  The song data search means generates a phrase based on the detected pitch data, collates this phrase with each of a plurality of melody data stored in the song data storage means, and stores a melody having this phrase. The music search apparatus according to claim 1, wherein music search is performed for data. A performance operation data detection step for detecting a pitch data group generated in response to the performance operation of the instrument;
A song data search step for collating the pitch data group with a plurality of melody data stored in the song data storage means and searching for a song including the melody data having the pitch data group;
A score display control step of reading out the score data corresponding to the searched music from the song data storage means and displaying the score on the display means;
A music search program comprising: a musical sound generation step of reading accompaniment data included in the searched music from a music data storage means and generating a musical sound of the accompaniment.

Images