JP2003076367A - Method and device for automatic musical composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the capacity of a memory and to shorten the processing time with respect to a method or a device for automatic musical composition. SOLUTION: The device for automatic musical composition is provided with a template database 15a in which a plurality of templates each of which consists of a plurality of data for automatic musical composition are stored and an accompaniment database 15b in which a plurality of accompaniment data representative of a plurality of accompaniment sound strings previously generated correspondingly to the templates respectively are stored. When a user selects one template, a melody data generation block U13 uses the selected template to automatically generate melody data representative of a melody sound string. An accompaniment data read part U14 reads out accompaniment data corresponding to the selected template from the accompaniment database 15b, and an output part U15 outputs the automatically generated melody data and the accompaniment data together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic music composition apparatus and an automatic music composition method for automatically composing a musical composition composed of a melody sound string and an accompaniment sound string.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Laid-Open No. 2000-305.
As disclosed in Japanese Patent No. 562, a music piece is automatically generated by using a template composed of a plurality of data for automatically composing a music piece such as music genre, time signature, phrase composition, number of measures, and chord progression. Automatic composition devices for composing are known. In this case, various templates are prepared in advance and stored in the template database, and based on one template read from the template database by the user's selection, the melody data representing the melody tone string and the accompaniment representing the accompaniment tone string. The data and the data are automatically generated by a predetermined program process, and the generated melody data and accompaniment data are output together.

[0003]

The accompaniment tone sequence does not require uniqueness as compared with the melody tone sequence, that is, the accompaniment tone sequence accompanies the melody tone sequence. The program processing for automatically generating the data is as complicated as the automatic generation of the melody data representing the melody tone sequence. Therefore, a large storage area is required to store a program for automatic accompaniment data generation processing, a large work area is required for the same processing, and a large amount of work area is required to generate accompaniment data. Requires processing time. Therefore, the above-mentioned conventional automatic music composition apparatus has a problem that a large-capacity memory is required and much time is spent for composing one music composition.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide an automatic music composition apparatus and an automatic music composition method in which the memory capacity and the processing time are kept small. .

To achieve the above object, a feature of the present invention is that one template is selected from a template database that stores a plurality of templates each of which is composed of a plurality of data for automatically composing music, and the same selection is made. In an automatic music composition device or an automatic music composition method for automatically generating melody data representing a melody tone sequence using a template, a plurality of accompaniment tone sequences generated in advance corresponding to a plurality of templates, respectively. The accompaniment database storing the accompaniment data is prepared, accompaniment data corresponding to the selected template is acquired from the accompaniment database, and the automatically generated melody data and the acquired accompaniment data are acquired. It is designed to output together.

In this case, an accompaniment database is provided in the automatic music composition device, and the accompaniment data corresponding to the selected template is read from the plurality of accompaniment data stored in the accompaniment database using the reading means. It is good to put out. Further, an accompaniment database is provided in another electronic device, and the accompaniment data corresponding to the selected template is input using the input means via a cable connected between the other electronic device and the automatic composition device. You may input it. Further, a server computer device having an accompaniment database may be provided, and the accompaniment data may be input from the server computer device via the Internet by an input means capable of accessing the server computer device from the automatic composition device via the Internet. .

When the melody data and the accompaniment data are output together, the output is to output the melody data and the accompaniment data to the tone generator circuit that forms and outputs the tone signal, and to output the melody data and the accompaniment data to the memory device. It means storing or outputting melody data and accompaniment data to an external electronic device. When outputting to the tone generator circuit, the tone generator circuit sequentially forms and outputs a melody sound signal and an accompaniment sound signal according to the melody data and the accompaniment data. When stored in the memory device, the melody sound signal and the accompaniment sound signal are sequentially generated by subsequent reading of the melody data and accompaniment data and supply to the tone generator circuit. When outputting to the external electronic device, the melody data and the accompaniment data are used for the immediate generation of the musical tone signal in the external electronic device or temporarily stored in the memory device as described above.

In the present invention thus constructed, the melody data representing the melody tone sequence is automatically generated only by selecting one template, and a plurality of accompaniment tone sequences stored in the accompaniment database are stored. The accompaniment data corresponding to the selected template is automatically added to the melody data among the plurality of accompaniment data to be represented. In this case, since each accompaniment data is formed corresponding to each template, the accompaniment data added to the melody data represents an accompaniment sound string that is musically suitable for the melody sound string of the melody data. Becomes

Therefore, according to the present invention, even if the program for automatically generating the accompaniment data and the memory area for storing the variable data necessary for the execution of the program are deleted, the accompaniment sound suitable for music is obtained. You can automatically compose a song consisting of a sequence of melody tones. In addition, the time spent for the process of automatically generating accompaniment data can be saved, and according to the present invention, it is possible to automatically compose a music piece including a melody sound string with an accompaniment sound string in a short time. .
Further, by accompaniment data being created in advance and stored in the accompaniment database, it is possible to obtain an accompaniment tone string having a high musical quality. In particular, this accompaniment data not only represents an automatically generated average accompaniment tone sequence,
Since it is possible to include manually edited accompaniment data and data created in advance by a musician, it is possible to prepare accompaniment data representing a high quality accompaniment tone sequence.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION An automatic music composition apparatus and an automatic music composition method according to an embodiment of the present invention will be described below.
FIG. 1 is a block diagram schematically showing a hardware configuration of the music composition apparatus to which the music composition method is applied. The automatic music composition apparatus can be applied to any form of electronic equipment such as electronic musical instruments, personal computers, sequencers, and various electronic equipment.

The automatic music composition device is provided with a CPU 11, a ROM 12 and a RAM 13 which are connected to the bus 10 and constitute a computer main body. The CPU 11 executes various programs to control the operation of the automatic music composition apparatus. In particular, by executing the automatic tune program represented by the functional block diagram of FIG. 2, melody data representing a melody tone sequence and accompaniment data representing an accompaniment tone sequence are automatically generated based on one selected composition template. To do. This CP
A timer 14 which is also connected to the bus 10 is connected to the U11, and the timer 14 measures the time to measure the CPU 11
Control the execution of the program by. ROM12
Is a part of storing various programs. RA
The M13 stores some or all of various programs transferred from the memory device 15 described later as needed, and temporarily stores variables necessary for executing the programs.

A memory device 15 and an external recording medium drive device 16 are also connected to the bus 10.
The memory device 15 is composed of a large-capacity recording medium such as a hard disk HD, and stores a part or all of various programs including an automatic music program and various data. The memory device 15 also includes a drive device capable of reading a program and data recorded in a recording medium such as a hard disk HD and writing the program and data in the recording medium.

Of the various data, the main ones will be described. The memory device 15 is provided with a composition template database 15a and an accompaniment database 15b (see FIG. 2). The composition template database 15a stores a plurality of templates each designated by a template name. The template name is, for example, a combination of alphabets and numbers or a simple symbol consisting of only numbers (for example, A-1, A-
2, 111, 112), but may be the song name, for example, "Sorrow Enka", "Winterscape", "Loss of Love". Each template includes a rhythm generation parameter Rh representing a music genre, time signature, phrase composition, number of measures, and the like.
Parameter Pt for pitch generation that indicates key and chord progression
And a degree of excitement parameter Em, and each of a plurality of data for automatically composing music. Here, the chord progression is I-IV-V- based on a plurality of measures, one or a plurality of tunes, or a key over one music.
Data such as I · · · that represents the progression of chords in degrees or CA
It is data representing the progress by the actual chord name such as m-G-C. As shown in FIG. 4, the excitement parameter Ph indicates a change in the excitement degree of music progression over time, over a plurality of measures, one or a plurality of passages, or one music.

The accompaniment database 15b stores a plurality of accompaniment data designated by the same template name as the name of each composition template.
Each accompaniment data represents a plurality of accompaniment tone sequences formed corresponding to the plurality of templates stored in the composition template database 15a. The formation of this accompaniment data will be described later in detail.

The external recording medium drive device 16 reads programs and data recorded on various external recording media 16a such as a compact disc CD, a mini disc MD, and a flexible disc FD, and records the programs and data on the external recording medium. It is possible to write to the medium 16a.

The automatic music composition apparatus also includes a keyboard interface circuit 21, an operator switch circuit 22, a display control circuit 23, and a tone generator circuit 24 connected to the bus 10. In the performance operator interface circuit 21,
A keyboard 25, which is a performance operator integrally or separately from the automatic music composition device, is connected or connected. The operation information indicating the operation of the keyboard 25 is supplied to the bus 10 via the keyboard interface circuit 21. The operator switch circuit 22 detects an operation of various instruction operators 26 such as a numeric key, a character key, a cursor moving key, and a mouse provided on the operation panel (or keyboard), and outputs operation information indicating the operation to the bus. Supply to 10.

The display control circuit 23 controls the display state of the display 27 provided on the operation panel (or display device) according to the display control data supplied via the bus 10. The tone generator circuit 24 receives performance information (key-on signal, key-off signal, note number,
A musical tone signal based on the velocity). The melody data and accompaniment data automatically generated by the present invention are also included in the performance information. The tone signal (melody tone signal and accompaniment tone signal) formed by the tone generator circuit 24 is output to the sound system 28. The sound system 28 is composed of an amplifier, a speaker and the like, and produces a musical tone corresponding to the outputted musical tone signal.

Further, the automatic music composition apparatus also includes a line interface circuit 31 and a communication interface 32 connected to the bus 10. The line interface circuit 31 is connected to another electronic device 34 such as another electronic musical instrument or personal computer via a cable 33. In the line interface circuit 31, an output circuit that outputs the data supplied from the bus 10 to another electronic device 34 via the cable 33, and an input that supplies the data input from the other electronic device 34 to the bus 10. It has a circuit. It should be noted that the transmission and reception of such data may comply with the MIDI standard. The communication interface circuit 32 is adapted to be connected to a communication network 35 such as the Internet, and a server computer 36 is connected to the communication network 35 as described later.

Before explaining the operation of the automatic musical composition apparatus thus configured, the accompaniment data stored in advance in the accompaniment database 15b provided in the memory device 15 will be described. This accompaniment data is usually created by the manufacturer, and an accompaniment data generation device having substantially the same hardware configuration as the automatic music composition device as shown in FIG. 1 is used in the creation of this accompaniment data. Therefore, although the hardware configuration of the accompaniment data generation device is not particularly described, the CPU in this case executes the accompaniment data creation program represented by the functional block diagram of FIG. In addition, in the memory device of this accompaniment data generation device,
As shown in the functional block diagram of FIG. 3, a composition template database 15c and an accompaniment pattern database 15d are prepared in advance.

Template database 15c for composition
Is constructed in the same manner as in the case of the above-mentioned automatic music composition device.
The accompaniment pattern database 15d is roughly classified according to music genres, and the music genres that are roughly classified are further classified according to time signatures. For each classified time signature, pattern data regarding intro, main, fill-in, and ending. The accompaniment pattern data is stored as a set. Each of these accompaniment pattern data is in accordance with the passage of time representing the sounding timing of the chord sound, the one or more chord constituent sounds to be pronounced (for example, the chord constituent sound represented by the pitch from the chord root), etc. 1
It consists of data that represents a chord note sequence for a measure or multiple measures.

Next, a method of generating accompaniment pattern data will be specifically described with reference to the functional block diagram of FIG. First, the manufacturer inputs the template name by operating the operator in accordance with the instruction of the template name selection unit M10. In response to the input of the template name, the template reading unit M11 reads the selected template from the composition template database 15c. This template includes a rhythm generation parameter Rh indicating a music genre, a time signature, a phrase structure, the number of measures, etc., a pitch generation parameter Pt indicating a key, chord progression, etc., and an excitement degree parameter Em. The parameters thus read are edited by the manufacturer in the parameter edit section M12 as needed.

Next, the pattern data reading section M13 and the accompaniment data generating section M14 automatically generate accompaniment pattern data based on the read template or the edited template. Although various methods are known as methods for generating the accompaniment pattern data, a brief description will be given of an example disclosed in Japanese Patent Application Laid-Open No. 2000-305562.
It is as in (1) to (4).

(1) By the processing of the pattern data reading section M13, the accompaniment pattern data specified by the "music genre" and "beat" in the rhythm generation parameter Rh is read from the accompaniment pattern database 15d. This accompaniment pattern data is a set of intro, main, fill-in and ending pattern data. In addition, when there are a plurality of accompaniment pattern data specified by “music genre” and “beat”,
Select one from the manufacturer or randomly.

(2) Next, the "accompaniment structure" in the rhythm generation parameter Rh is processed by the accompaniment data generation unit M14.
And the intro, main, fill-in read from the pattern database 15d based on the "number of measures".
The ending patterns are arranged according to the passage of time to form an accompaniment progression pattern for one music piece. In this case, it is preferable that the fill-in pattern is inserted more frequently in a portion having a higher swell by the swell degree parameter Em.

(3) Next, by the processing of the accompaniment data generation unit M14, the accompaniment progress pattern represents the actual pitch of the accompaniment sound based on the "key" and "chord progression" in the pitch generation parameter Pt. Converted into accompaniment pattern data.

(4) Next, by the processing of the accompaniment data generator M14, the volume, tone color, number of parts, etc. of each accompaniment sound indicated by the accompaniment pattern data are determined based on the excitement degree pattern Em. For example, it is determined that the higher the excitement, the higher the volume, and the more the number of parts becomes, the more characteristic the tone color is.

The accompaniment data for one piece of music automatically generated in this way is stored in the accompaniment data reading / writing section M.
By the processing of 15, the template name selected by the processing of the template name selection unit M10 is added and stored in the accompaniment database 15e provided in the memory device of the accompaniment data generation apparatus. By repeatedly performing such accompaniment data generation processing, accompaniment data is accumulated and stored in the accompaniment database 15e with a template name added.

By the processing of the accompaniment data editing section M16, the manufacturer edits the accompaniment data automatically generated as described above or the accompaniment data already stored in the accompaniment database 15e and stores it in the accompaniment database 15e. You can leave it. Further, by the processing of the accompaniment data manual creation unit M17, it is possible to store the accompaniment data created by the manufacturer using a performance operator such as a keyboard in the accompaniment database 15e. In addition,
Also in this case, the template name is added to the accompaniment data. The accompaniment data thus accumulated in the accompaniment database 15e is stored in the accompaniment database 15b of the memory device 15 of the automatic composition apparatus as described above.

Next, the operation of the automatic music composition apparatus configured as shown in FIG. 1 will be described with reference to the functional block diagram of FIG. Similar to the case of generating the automatic accompaniment data described above, first, the user inputs the template name by operating the operator according to the instruction of the template name selecting unit U10. In response to the input of the template name, the template reading unit U11 reads the selected template from the composition template database 15a. In this case also, this template is
It includes a rhythm generation parameter Rh indicating the time signature, the phrase structure, the number of measures, etc., a pitch generation parameter Pt indicating the key, chord progression, etc., and a climax parameter Em. Then, the read parameters are edited by the user as necessary by the processing of the parameter editing unit U12.

The composition template database 15 for composition
The template read from a or the template edited by the processing of the parameter editing unit U12 is supplied to the melody data generating unit U13. Then, the melody data generation unit U13 automatically generates and outputs the melody data representing the melody tone string for one music piece based on these templates. As a method for automatically generating melody data based on this template, various known methods can be used, but in this specification,
As an example, the method described in Japanese Patent Laid-Open No. 2000-305562 will be briefly described.

In this case, the melody data generator U13
Is a melody rhythm generator U that generates a melody rhythm.
13-1 and a melody pitch generation unit U13 for adding a melody pitch to the generated melody rhythm
-2. The melody rhythm generator U13-1 automatically generates a melody rhythm by repeatedly executing the following procedures (1) to (3).

(1) First, a target section is designated in units of a passage or a measure. In specifying the target section, first,
The first section is designated, and the next section is sequentially designated until the end of one song. Then, the excitement degree rank of the designated target section is determined. In determining the degree of excitement, first, the average value of the degree of excitement of the target section represented by the degree of excitement parameter Em in the selected template is calculated, and the average value is calculated from any of a plurality of sections determined in advance. The degree of excitement is determined depending on whether it belongs to a section.

(2) Based on the determined degree of excitement, the minimum note (fineness of note), the number of notes, and the frequency of syncopation in the target section are determined.
In this determination, the excitement degree table stored in the memory device 15 is referred to. As shown in FIG. 5, this excitement degree table stores the minimum note (fineness of note), the number of notes, and syncopation frequency in one target section in association with the excitement degree rank.

(3) Using the determined minimum note, the number of notes, and the syncopation frequency, the "rhythm structure" and "beat" in the rhythm generation parameter Rh
The rhythm pattern in the target section, that is, the dot of the melody rhythm is determined. In determining the hitting point of this melody rhythm, a large number of rhythm patterns recorded in the memory device 15 or the like and prepared corresponding to various combinations of time signature, minimum note, number of notes, and syncopation frequency are referred to. A rhythm pattern is selected according to the time signature, the minimum note, the number of notes, the syncopation frequency, etc. determined in (2) above. When there are a plurality of rhythm patterns satisfying the same condition, one rhythm pattern is randomly selected from these rhythm patterns. In addition, a similar section, for example, a type “A”-“B”-“C”-“A” is used by using the “section structure”.
In the case of the four-movement composition shown by, the first with the type "A"
For the section of the fourth passage, similar rhythm patterns are selected regardless of the values.

The melody pitch generating section U13-2 automatically generates melody data representing a melody pitch, that is, a melody tone sequence, for example, according to the following specific example. Explaining the procedure of this specific example, the melody pitch is determined by repeatedly executing the following procedures (1) to (3).

(1) First, as in the case of the melody rhythm generation, the target section is designated in units of passages or measures. Then, the swell degree parameter Em of the designated target section is read from the memory device 15, and the swell degree represented by the swell degree parameter Em is set to the vertical axis corresponding to the pitch, and the target section is set to the horizontal axis. A rise degree curve Ec is formed (see FIG. 6). In this case, the relationship between the swelling degree and the pitch is predetermined so that the predetermined value of the swelling degree corresponds to the predetermined pitch.

(2) Next, the melody rhythm generator U1
The rhythm hit points determined by the process of 3-1 are superimposed on the horizontal axis of the excitement degree curve Ec, and the pitches corresponding to the values of the excitement degree curves Ec at a plurality of rhythm hit point positions are determined as the provisional pitch. In FIG. 6, this provisional pitch is indicated by a white circle.

(3) Next, among the plurality of scale notes belonging to the key represented by the key data in the pitch generation parameter Pt, the determined plurality of temporary pitches is the scale closest to the temporary pitch. The sound is corrected. That is, the provisional pitch of the white circles in FIG. 6 is corrected to the scale notes Spa, Spb, Spc belonging to the above-mentioned key indicated by the black circles in FIG. Further, in this correcting operation, when the excitement degree curve Ec is constant in a predetermined section or more, it is preferable to randomly change to a scale note belonging to the key and close to the temporary pitch. In addition, similar pitches may be selected for the similar section specified by the phrase structure regardless of the excitement degree pitch curve.

The melody pitch data automatically generated in this way, that is, the melody data representing the melody tone train for one music piece is output to the output unit U15. On the other hand, the template name selected by the process of the template name selection unit U10 is also output to the accompaniment data reading unit U14. The accompaniment data reading unit U14 reads out the accompaniment data (accompaniment data representing an accompaniment sound string for one music piece) corresponding to the template name from the accompaniment database 15b and outputs it to the output unit U15. The output unit U15 outputs the melody data and the accompaniment data together.

The output of the melody data and the accompaniment data is to output the both data to the tone generator circuit 24,
Storing in the memory device 15, and other electronic devices 3
4 means output to at least one. When the melody data and the accompaniment data are output to the sound source circuit 24, the sound source circuit 24 sequentially forms a melody sound signal and an accompaniment sound signal corresponding to the melody data and the accompaniment data, respectively. The formed melody sound signal and accompaniment sound signal are transmitted to the sound system 28.
And is sounded from the system 28 as a melody sound and an accompaniment sound. When the melody data and the accompaniment data are stored in the memory device 15, the melody sound and the accompaniment sound are sequentially generated by reading the melody data and the accompaniment data and supplying them to the tone generator circuit 24. Further, when it is output to another electronic device 34, it is used for the immediate generation of a musical tone in the other electronic device 34 as described above, or temporarily stored in the memory device.

As can be understood from the above description of the operation, according to the above-described embodiment, the melody data representing the melody tone sequence is automatically generated only by selecting one template and is provided in the memory device 15. The accompaniment data corresponding to the selected template among the plurality of accompaniment data stored in the accompaniment database 15b and representing a plurality of accompaniment tone strings is automatically added to the melody data. In this case, since each accompaniment data is formed corresponding to each template, it is assumed that the accompaniment data added to the melody data represents an accompaniment sound string that is musically suitable for the melody sound string based on the melody data. Become.
Therefore, even if the memory area for storing the program for automatically generating the accompaniment data and the variable data necessary for executing the program is deleted, the musical piece composed of the melody sound string with the accompaniment sound string suitable for music Can compose automatically. Further, the time spent for the process of automatically generating the accompaniment data can be saved, and the music composed of the melody sound string with the accompaniment sound string can be automatically composed in a short time.

Further, according to the above embodiment, the accompaniment database 15b has, in addition to the accompaniment data automatically generated by the accompaniment data generation unit M14 of FIG. 3, an accompaniment data edit unit M16 and an accompaniment data manual creation unit. The accompaniment data through the hand by the process of M17 is also stored. Therefore, the accompaniment database 15b can store accompaniment data representing a musically high quality accompaniment sound sequence, and can compose a high-quality musical composition including the accompaniment sound sequence represented by the accompaniment data. Becomes

In the above embodiment, the accompaniment data corresponding to the template selected from the plurality of accompaniment data stored in the accompaniment database 15b provided in the automatic music composition apparatus is read and used. did. However, instead of this, the accompaniment database 15
b may be provided outside the automatic music composition apparatus, and accompaniment data stored in the accompaniment database 15b may be used.

For example, as shown by a broken line in FIG. 1, a server computer 36 having a built-in accompaniment database storing a plurality of accompaniment data corresponding to the template is connected via a communication network (Internet) 35. The accompaniment data corresponding to the melody automatically composed by the composition device may be acquired from the server computer 36. In this case, in the automatic music composition apparatus, the template selected by the process of the template name selection unit U10 is transmitted to the server computer 36,
Accompaniment data specified by the template may be received via the communication network 35, and the received accompaniment data may be output together with the melody data automatically generated based on the selection template.

As shown by the broken line in FIG. 1, another electronic device 34 having a built-in accompaniment database storing a plurality of accompaniment data corresponding to the template is connected to the cable 33.
It may be configured to be connected via the electronic musical composition device to obtain accompaniment data corresponding to the melody automatically composed by the automatic composition device from another electronic device 34. In this case, in the automatic music composition device, the template selected by the process of the template name selection unit U10 is output to another electronic device 34 via the line interface circuit 31, and the accompaniment data specified by the template is changed to another. Electronic device 34
It is advisable to output the accompaniment data input together with the melody data automatically generated based on the selection template.

Further, in the above embodiment, the template and the accompaniment data are made to correspond one to one.
However, a plurality of accompaniment data may be associated with one template, and one of the plurality of accompaniment data may be selected when one template is selected. In this case, a plurality of accompaniment data generated for one template in association with the template is stored in the accompaniment database 15b, and when one template is selected, a plurality of accompaniment data corresponding to the same template is stored. The user selects one of the accompaniment data, and the selected one accompaniment data is the accompaniment database 15b.
May be output from. Further, instead of selection by the user, one of a plurality of accompaniment data corresponding to the one template may be randomly extracted.

Further, in the above embodiment, the length of the melody composed based on one template is always constant. However, the present invention is also applied to an automatic music composition device that composes melodies of different lengths based on one template. In this case, a plurality of accompaniment data for one template is stored in the accompaniment database 1
If a long melody is composed, a plurality of accompaniment data may be stored together and used. In addition, the long accompaniment data 15
It may be stored in b and all the accompaniment data may be used when a long melody is composed, and a part of the accompaniment data may be used when a short melody is composed. In addition, accompaniment database 1 with short accompaniment data
It may be stored in 5b and the accompaniment data may be repeatedly used when a long melody is composed.

Further, in the above embodiment, the same name as the melody composition template is also used for accompaniment data, and melody data representing a melody tone sequence automatically composed based on the template and added to the melody data. Correspondence with the associated accompaniment data is performed. However, as long as it is possible to associate the melody data with the accompaniment data, any association method may be adopted. For example, the template may include information (file name, etc.) that directly or indirectly identifies the accompaniment data, or conversely, information that directly or indirectly identifies the template in the accompaniment data (file name, etc.). ) May be included, and the information may be used to perform the association. Further, the association may be performed using a table showing the association between the template and the accompaniment data.

Further, in the above embodiment, the template and accompaniment data are stored in advance in the composition template database 15a and the accompaniment database 15b of the automatic composition apparatus. However, in addition to this, at a later date, the composition template database 15a and the accompaniment database 15b are transmitted from another electronic device 34 via the cable 33 and the line interface circuit 31, or from the server computer 39 via the communication network 35 and the communication interface circuit 32.
It is also possible to additionally store the template and accompaniment data, or change the storage data in both databases 15a and 15b.

Furthermore, in the above embodiment, the selection of the template for composition is made by the user directly, but this selection may be made indirectly. For example, when this automatic composition device and composition method are applied to a music fortune-telling device that provides the fortune-telling result to the user by music, the input of the fortune-telling condition can correspond to the selection of the template. That is, when the user inputs a fortune-telling condition such as date of birth, blood type, constellation, etc., and provides the user with a song automatically tuned as a result of the fortune-telling corresponding to the fortune-telling condition, the song for which the fortune-telling condition is automatically song Therefore, the same fortune-telling condition itself can be used to select a template for an automatic song. The storage contents of the composition template data are not limited to those illustrated.

[Brief description of drawings]

FIG. 1 is a block diagram schematically showing a hardware configuration of an automatic music composition apparatus according to an embodiment of the present invention.

FIG. 2 is a functional block diagram of the automatic music composition device of FIG. 1 when an automatic composition program is executed.

FIG. 3 is a functional block diagram of the automatic accompaniment data generation device when the automatic accompaniment data generation program is executed.

FIG. 4 is a graph showing an example of change characteristics of a swell degree parameter.

FIG. 5 is a data format diagram showing the contents of the excitement degree table.

FIG. 6 is a graph showing an example of a climax curve used in the method for explaining a method of generating a melody pitch.

[Explanation of symbols]

11 ... CPU, 15 ... Memory device, 15a, 15c ... Composition template database, 15b, 15e ... Accompaniment database, 15c ... Accompaniment pattern database, 1
6 ... External recording medium drive device, 16a ... External recording medium, 24 ... Sound source circuit, 25 ... Keyboard, 26 ... Instructing operator,
27 ... Display, 31 ... Line interface circuit, 32 ... Communication interface circuit, 34 ... Other electronic equipment, 36 ... Server computer, U10 ... Template name selecting section, U11 ... Template reading section, U12
... parameter edit section, U13 ... melody data generation section, U14 ... accompaniment data reading section, U15 ... output section.

Claims (3)

[Claims] 1. A template database in which a plurality of templates each of which is composed of a plurality of data for automatically composing a musical composition are stored, and a plurality of accompaniment tone sequences generated in advance corresponding to the plurality of templates, respectively. An accompaniment database storing a plurality of accompaniment data, template selecting means for selecting one template from the plurality of templates stored in the template database, and a melody representing a melody tone string using the selected template. The melody generating means for automatically generating data, and the accompaniment data reading means for reading the accompaniment data corresponding to the selected template from the plurality of accompaniment data stored in the accompaniment database, Generated melody data and the read Automatic composition device for outputting accompaniment data and combined the. 2. A template database storing a plurality of templates each of which is composed of a plurality of data for automatically composing music, and one template is selected from the plurality of templates stored in the template database. Template selection means, melody generation means for automatically generating melody data representing a melody tone sequence using the selected template, and a plurality of accompaniment tone sequences generated in advance corresponding to the plurality of templates, respectively. From an external accompaniment database storing a plurality of accompaniment data to represent, an input means for inputting the accompaniment data corresponding to the selected template, and the automatically generated melody data and the input accompaniment data. Automatic music composition device that outputs together. 3. A method for automatically composing music, wherein a template is selected from a template database that stores a plurality of templates each composed of a plurality of data for composing music automatically, Automatically generating melody data representing a melody tone sequence using the selected template; and storing a plurality of accompaniment data representing a plurality of accompaniment tone sequences previously generated corresponding to the plurality of templates, respectively. Acquiring the accompaniment data corresponding to the selected template from the accompaniment database, and outputting the automatically generated melody data and the acquired accompaniment data together.