JP3835456B2 - Automatic composer and storage medium - Google Patents

Description

  The present invention relates to an automatic music composition apparatus and a storage medium that automatically compose music according to various conditions related to music.

  Conventionally, as an automatic composition apparatus that automatically composes music according to various conditions relating to music, for example, Japanese Patent Laid-Open No. 9-50278 discloses the following apparatus.

  That is, this automatic music apparatus analyzes and extracts the musical characteristics of various existing songs, stores the analysis / extraction results in the performance data memory as song templates of the corresponding existing songs, The user appropriately modifies one of the music templates, and the music is automatically composed based on the corrected one.

  Among the data described in the song template, those related to the pitch of each phrase include, for example, “phrase pitch pattern”, “first-last sound of phrase”, and the like. The pitch for each syllable is determined. Specifically, when the frequency (I, II, III, IV, V, VI, VII) is set for “First Phrase of Phrase”, the pitch of the first and last syllable of the target phrase is While the pitch corresponding to the frequency is determined, when the frequency is not set, the pitch of the first and last syllables of the target phrase is determined based on the “undulation of emotion” described in the song template. . The pitch of syllables other than the first and last syllables of the target phrase is determined based on this pitch pattern when it is set in the phrase pitch pattern. When the pitch pattern is not set, a pitch pattern approximated to the graphic pattern shown in “Emotional undulation” is selected and determined based on the selected pitch pattern. When the melody is generated in this way, the user determines whether the melody is inconvenient by actually listening to the music, and when there is inconvenience, the melody is corrected manually.

In Patent Document 1, the pitch selected at random is compared with a predetermined music condition, and when the music condition is met, the pitch is adopted. An automatic song apparatus configured to select and generate a melody is disclosed.
Japanese Patent Publication No. 60-40027

  However, in the former of the above-mentioned conventional automatic music apparatus, although the melody can be generated along the data described in the music template, that is, the data related to the pitch for each phrase, a musically inconvenient melody can be generated. When such a melody is generated, it is troublesome for the user to manually correct the melody.

  In the latter case, only the pitches that are matched by comparing randomly selected pitches with predetermined music conditions are employed, but not all melody that is not musically inconvenient is always generated. That is, when determining a new pitch, only the past pitch and the current pitch can be considered, and there is a possibility that a musically inconvenient pitch may be selected in relation to the next pitch. It was.

  The present invention has been made paying attention to this point, and an object thereof is to provide an automatic music composition device and a storage medium capable of automatically composing a melody that is not inconvenient musically.

In order to achieve the above object, an automatic musical composition apparatus according to claim 1 includes a skeleton nodal pitch generating means for generating a skeleton nodal pitch forming a skeleton of music, and an important hit point detecting means for detecting an important hit point from a rhythm pattern. In the automatic composition apparatus having an assigning means for assigning the generated skeletal node pitch to the detected important hit points and a melody pitch generating means for generating a melody pitch between the important hit points , a pitch difference calculator that calculates a pitch difference, the pitch range information indicating a pitch range including the melody pitch after generation when generating melody pitch between the important tone, set on the basis of the pitch difference to the calculated and a pitch range information setting unit, the melody pitch generating means, prior Symbol set pitch range information and the backbone nodes Depending on the pitch, and generates the melody pitch between the important tone.

In order to achieve the above object, an automatic music composition apparatus according to claim 2 includes a skeleton nodal pitch generating means for generating a skeleton nodal pitch forming a skeleton of music, and an important hit point detecting means for detecting an important hit point from a rhythm pattern. Assigning means for assigning the generated skeletal node pitch to the detected important striking points; and melody pitch generating means for generating a melody pitch between the important striking points;
In automatic composition system having a pitch that indicates the number of syllables setting means for setting the number of syllables between the important tone, pitch range including the melody pitch after generation when generating melody pitch between the important tone the range information, and a pitch range information setting means for setting, based on the number of syllables the set, the melody pitch generating means, in accordance with the prior SL set pitch range information and the pitch of the framework node, A melody pitch between the important hit points is generated.

In order to achieve the above object, a storage medium according to claim 3 includes a skeleton node pitch generation step for generating a skeleton node pitch forming a skeleton of a song, an important dot detection step for detecting an important dot from a rhythm pattern, A program for causing a computer to execute an automatic music composition method including an assigning step of assigning the generated skeletal node pitch to the detected important hit points and a melody pitch generating step of generating a melody pitch between the important hit points is stored. in a computer readable storage medium, wherein the automatic composition method, a pitch difference calculation step of calculating a pitch difference before Symbol skeleton node pitches between melody pitch after generation when generating melody pitch between the important tone based on the pitch difference pitch range information, that the calculated indicating the pitch range including the And a pitch range information setting step of setting Te, in the melody pitch generating step, in accordance with the prior SL set pitch range information and the pitch of the framework node, generating a melody pitch between the important tone Features.

In order to achieve the above object, the storage medium according to claim 4 includes a skeleton node pitch generating step for generating a skeleton node pitch forming a skeleton of a song, and an important hit point detecting step for detecting an important hit point from a rhythm pattern; Storing a program for causing a computer to execute an automatic music composition method that includes an assigning step of assigning the generated skeletal node pitch to the detected important hit points and a melody pitch generating step of generating a melody pitch between the important hit points. was, in the computer-readable storage medium, wherein the automatic composition method, prior SL and syllable number setting step for setting the number of syllables between important tone, after generation when generating melody pitch between the important tone the pitch range information indicating a pitch range including the melody pitch, based on the number of the set syllable And a pitch range information setting step for a constant, and in the melody pitch generating step, in accordance with the prior SL set pitch range information and the pitch of the framework node, characterized by generating the melody pitch between the important tone And

According to the invention described in claim 1 or 3 , the pitch range information is set and the pitch difference between the skeleton nodes is calculated. The calculated pitch difference, the set pitch range information, and the pitch of the skeleton node Accordingly, since the melody pitch between the important hit points is generated, the hit point pitch between the important hit points intended by the user can be generated.

According to the invention of claim 2 or 4 , the pitch range information is set and the number of syllables between important hit points is set. The set number of syllables, the set pitch range information, and the pitch of the skeleton node Accordingly, since the melody pitch between the important hit points is generated, it is possible to generate the hit point pitch between the important hit points more intended by the user.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

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

  As shown in the figure, the automatic musical composition device according to the present embodiment includes a keyboard 1 for inputting pitch information and a plurality of switches (including a mouse which is a pointing device) for inputting various information. The panel switch 2 provided, the key depression detection circuit 3 for detecting the depression state of each key of the keyboard 1, the switch detection circuit 4 for detecting the depression state of each switch of the panel switch 2, and the overall control of the apparatus. CPU 5, ROM 6 for storing control programs executed by CPU 5, table data, etc., RAM 7 for temporarily storing performance data, various input information, calculation results, and the like, and counting interrupt times and various times in timer interrupt processing Timer 8 for displaying various information, for example, large liquid crystal display (LCD) or CRT (Cathode Ray Tube) display and light emitting die Display device 9 including an ode (LED), floppy (registered trademark) disk drive (FDD) 10 for driving a floppy (registered trademark) disk (FD) 20 as a storage medium, and various applications including the control program A hard disk drive (HDD) 11 for driving a hard disk (not shown) for storing programs and various data, etc., and a compact disk-read only memory (CD) for storing various application programs including the control program, various data, etc. A CD-ROM drive (CD-ROMD) 12 that drives a (ROM) 21 and a MIDI interface (I / F) that inputs an external MIDI (Musical Instrument Digital Interface) signal and outputs a MIDI signal to the outside. 13 and communication A communication interface (I / F) 14 for transmitting / receiving data to / from the server computer 102, for example, via the network 101, and a tone generator circuit for converting performance data input from the keyboard 1, preset performance data, and the like into musical tone signals 15, an effect circuit 16 for imparting various effects to the tone signal from the tone generator circuit 15, and a tone signal from the effect circuit 16 is converted into sound, such as a DAC (Digital-to-Analog Converter) It is constituted by a sound system 17 such as an amplifier and a speaker.

  The above components 3 to 16 are connected to each other via a bus 18, a timer 8 is connected to the CPU 5, another MIDI device 100 is connected to the MID II / F 13, and a communication network 101 is connected to the communication I / F 14. Are connected to the sound source circuit 15, and a sound system 17 is connected to the effect circuit 16.

  As described above, the hard disk of the HDD 11 can also store the control program executed by the CPU 5. When the control program is not stored in the ROM 6, the control program is stored in the hard disk and is read into the RAM 7. Thus, the CPU 5 can be caused to perform the same operation as when the control program is stored in the ROM 6. In this way, control programs can be easily added and upgraded.

  The control program and various data read from the CD-ROM 21 of the CD-ROM drive 12 are stored in the hard disk in the HDD 11. As a result, a new installation or version upgrade of the control program can be easily performed. In addition to the CD-ROM drive 12, a device for using various types of media such as a magneto-optical disk (MO) device may be provided as an external storage device.

  As described above, the communication I / F 14 is connected to a communication network 101 such as a LAN (Local Area Network), the Internet, or a telephone line, and is connected to the server computer 102 via the communication network 101. When the above programs and various parameters are not stored in the hard disk in the HDD 11, the communication I / F 14 is used to download programs and parameters from the server computer 102. A computer serving as a client (automatic composition apparatus in the present embodiment) transmits a command for requesting downloading of a program and parameters to the server computer 102 via the communication I / F 14 and the communication network 101. Upon receiving this command, the server computer 102 distributes the requested program and parameters to the computer via the communication network 101, and the computer receives these programs and parameters via the communication I / F 14 and receives them in the HDD 11. Downloading is completed by accumulating on the hard disk.

  In addition, an interface for directly exchanging data with an external computer or the like may be provided.

  2 and 3 are diagrams visually representing various control processes executed by the automatic musical composition apparatus of the present embodiment. The outline of the various control processes will be described below with reference to FIG.

  In FIG. 2, first, when the user selects one of a plurality of types of overall composition condition templates (the entire composition condition template is stored in, for example, the hard disk), the overall composition conditions described in the template are selected. Is set (input). Items set as overall composition conditions include, for example, the number of passages, number of phrases, number of measures, time signature, key, song start pitch, song end pitch, and range (highest and lowest notes are given). Each template is preliminarily described with data corresponding to these items and is given a name. For example, when the user selects a mode for selecting an overall composition condition using the mouse and clicks an “overall composition condition” field displayed in the mode, a pop-up menu in which the template names are arranged is displayed. When the user selects any template name from among these, the overall composition condition described in the template corresponding to the name is set. Note that each item of the composition condition may be individually corrected or input.

  Of the overall composition conditions set in this way, the configuration template database 31 is searched based on the number of passages, the number of phrases, and the number of measures, and the configuration template that best matches the conditions is selected, or the conditions A plurality of configuration templates that conform to the above are presented to the user, and one of them is selected by the user. Here, the configuration template database 31 is a database constructed on the hard disk, for example, and includes a plurality of configuration templates. The configuration data described in each configuration template includes, for example, a syllable symbol (see FIG. 10 described later) set in each syllable, the position of a climax (bridge) syllable, the number of syllables, and the like. In addition, when the configuration data of the configuration template searched from the configuration template database 31 is different from the one intended by the user, the user can select a favorite one from other candidates. A part of the template configuration data can be edited.

  The melody template database 32 is searched based on the composition data generated in this way (excluding the number of syllables) and the time signature set in the overall composition condition, and the melody template most suitable for the condition is selected. Is done. The melody template database 32 is constructed on a hard disk, for example, and is composed of a plurality of melody templates, similar to the configuration template database 31. Each melody template includes, for example, a melody skeleton (in this embodiment, an overall skeleton, a phrase skeleton, and a phrase skeleton. Each data such as chord progression, melody pitch and melody hit point is described, and the data described in each melody template is not changed as it is (that is, various modifications are made as described later). (Even if it is not) As described above, when one melody template is searched, each data described in the melody template is set (input). Similarly to the configuration template, when the searched melody template is different from the user's intention, the melody template can be selected from other candidates.

  In this way, when each data described in the melody template is input, the pitch data in the data is transposed or converted into parallel tones according to the key set in the overall composition condition. The result is supplied to the melody template deformation processing unit 33 in FIG. Data other than the pitch data is supplied to the melody template deformation processing unit 33 as it is.

  As shown in FIG. 3, the melody template deformation processing unit 33 includes a rhythm pattern data deformation processing unit 33a, a chord data deformation processing unit 33b, a skeleton data deformation processing unit 33c, and a melody pitch data deformation processing unit 33d. Has been.

  When the rhythm pattern in the searched melody template is different from the user's intention, the rhythm pattern data transformation processing unit 33a can set various conditions set by the user (for example, the presence or absence of after-effect (weakness), syncopation Based on the presence / absence, presence / absence of a note (dotted note), length of start sound length, level of complex (difficulty), etc. A table formed by connecting the entire music piece to each other and generating new hit point data (rhythm pattern data). The hit point is the sounding timing of the melody, and the number of hit points in one measure corresponds to the number of syllables in one measure. The rhythm pattern database 34 is searched based on each feature connection data in the rhythm pattern feature connection table, and a rhythm pattern for one measure is selected. Then, the rhythm pattern data of the entire song is generated by connecting the rhythm patterns of each measure over the entire song.

  Further, when the number of syllables set by the user is different from the number of striking points of the selected melody template (as described above, the information on the number of syllables is not referred to when searching for a melody template, so this case occurs. ), Or when the number of syllables set by the user is different from the number of hit points of the generated rhythm pattern data of the entire song, the syllable numbers are matched. In this syllable number adjustment, a rhythm pattern in the melody template to be replaced or another rhythm pattern having the same characteristics as the generated rhythm pattern but having a different number of syllables is selected by searching the rhythm pattern database 34. Then, the rhythm pattern is replaced with an increase or decrease in the number of syllables.

  An editing function is also provided in which the user can manually move the time base of the hit point and increase / decrease the hit point, so that when the time axis of the hit point moves or the number changes, the rhythm pattern data deformation processing unit 33a transforms corresponding rhythm pattern data.

  When the chord progression of the selected melody template is different from the user's intention, the chord data transformation processing unit 33b transforms the chord data in accordance with the user's editing instruction.

  The skeleton data transformation processing unit 33c performs a process of individually transforming the skeleton data of each layer of the selected melody template and a batch editing process for the skeleton data of all the layers.

  The melody pitch data transformation processing unit 33d transforms the melody pitch data of the selected melody template with reference to the music rule database 35 based on the dynamics, non-code sound frequency and music rules set by the user. Further, when the user instructs the scale axis movement of the hit point by manual operation, the melody pitch data is also deformed accordingly. In this embodiment, since this modification is performed separately for the normal measure and the pickup measure, the music rule database 35 is constructed by two types of databases for the normal measure and the pickup measure.

  In this way, the rhythm pattern data transformation processing unit 33a performs the rhythm pattern data transformation processing, and the skeleton data transformation processing unit 33c performs the skeleton data transformation processing of the entire skeleton data, the phrase skeleton data, and the phrase skeleton data. In the melody pitch data transformation processing unit 33d, the melody pitch data for the normal measure and the melody pitch data for the pickup measure are independently transformed. Along with each of these deformation processes, the processing result (composition progress) is displayed on the display device 9.

  In addition to the function of reproducing and playing the melody pitch data (musical sound data) generated by deformation by the melody pitch data deformation processing unit 33d, the automatic musical composition apparatus of the present embodiment is modified by the skeleton data deformation processing unit 33c. The musical tone data of the generated three-level skeleton data is reproduced and played for each level. For this reason, when the user designates a skeletal performance of a certain hierarchy, pitch data (musical sound data) corresponding to the skeleton is read from the skeleton data transformed by the skeleton data transformation processing unit 33c and reproduced, and the sound system 17 is played. Is converted into sound. On the other hand, when a melody performance is instructed by the user, pitch data (musical sound data) corresponding to the melody is read from the deformed melody pitch data and reproduced, and converted into sound by the sound system 17.

  The present invention is characterized by the melody pitch data deformation process among the above three main processes executed by the melody template deformation processing unit 33, that is, the rhythm pattern data deformation process, the skeleton data deformation process, and the melody pitch data deformation process. Have. Hereinafter, the outline of the melody pitch data deformation process will be described first, and then the melody pitch data deformation process will be described in detail with reference to FIGS.

The melody pitch data transformation process is performed as follows. That is,
1) When the song to be composed is composed of only ordinary measures a) The minimum generation unit is one measure, and the maximum pitch of two nodes given to the one measure, the composition condition set and the measure A melody pitch is generated according to a rhythm pattern generated separately
i) If the measure is a measure in the same name / similar passage, the melody pitch of the measure is generated while maintaining similarity to the reference measure
ii) When the measure is a measure in a new passage, a new melody pitch of the measure is generated. b) A musical evaluation is performed on the generated melody pitch for one measure, and as a result, the musical evaluation is not satisfied. In this case, the process a) is performed again, and the process a) is performed again. On the other hand, if the musical evaluation is satisfied, the next process c) is performed. C) The melody pitch generation process a) for one measure is performed for one phrase. Repeat to generate the melody pitch of the phrase d) Perform musical evaluation on the generated melody pitch for one phrase, and as a result, if the musical evaluation is not satisfied, return to processing a) and perform processing a again ), B) and c), if the musical evaluation is satisfied, the next processing e) is performed. E) Melody pitch generation processing c) and d) for one phrase is repeated for all phrases. Generates the melody pitch of the entire song 2) The song to be composed includes a pick-up measure (if the sound contained in the next phrase is biting into the second half of a measure, this biting portion is called the pick-up measure of the next phrase) A) For normal measures, perform the above steps 1) a) to d), and then perform the following processing for the pickup measures. B) Separately generated rhythm for the pickup measures. Determine the pitch curve for this pickup measure according to the pattern, the last strike pitch of the previous phrase, the first strike pitch of the measure next to the pickup measure of this phrase, and the number of syllables of the pickup measure. C) Along with this, generate a melody pitch for this pickup measure d) Process b) and c) E) Performs individually for each kuup measure. E) Combines the melody pitches of all the pickup measures generated by the process d) with the melody pitch of the normal bars generated by the process a) to generate the melody pitch of the entire song. Here, “same-named passage” means the relevant passage when there is a passage with the same-named passage symbol in the previous passage, and “similar passage” is similar to the previous passage. (In this embodiment, there are two types, “′ similar” and “same”). This means that there is a passage set with a passage symbol, and “new passage” means “same passage”. Or a passage that is not one of the “similar passages”. The “section symbol” is a symbol that is set for each passage and indicates the mutual relationship between the passages (for example, “A”, “A ′”, “B” respectively set for the first to fourth passages in FIG. 10). "," C "). In the example of FIG. 10, “new passage” is the first, third, and fourth passages in which “A”, “B”, and “C” are set, and “similar passage” has “A ′” This is the second passage that has been set. In the example of FIG. 10, “same-named passage” is not set. Further, the “reference measure” refers to the same measure of the same number phrase of the reference passage (the same name or similar passage preceding the target passage).

Further, in the processing 1) a), specifically, a melody pitch of one measure is generated as follows. That is,
1) In accordance with the minimum composition conditions (for example, the dynamics), the music rule, and the pitch of the hit point immediately before the target hit point, a pitch other than the nodal pitch is determined one by one in a relatively loose condition. 2) Melody for one measure When a pitch is generated, a musical evaluation that is slightly stricter than the above conditions (= whether or not the compositional conditions and music rules of the type not included in the conditions for determining the pitch of the single hit point are satisfied) If the musical evaluation is satisfied, the generated melody pitch for one measure is adopted, and if the musical evaluation is not satisfied, the process returns to the first processing 1) and the melody pitch of the corresponding measure is adopted. 3) A melody pitch for one phrase is generated by the above processing 1) c), and a stricter musical evaluation (musical evaluation of the bar) is performed by processing 1) d). A) If the musical evaluation is satisfied a) Adopt the generated melody pitch for one phrase b) Music Not satisfied
i) If the musical evaluation can be satisfied by correcting the pitch of each hit point, correct it
ii) If it is not possible to satisfy the musical evaluation only by correcting the pitch of individual hit points, or if a considerable number of corrections are required, the process returns to the first process 1) for each measure of the phrase. Next, the melody pitch data transformation process will be described in detail.

  FIG. 4 is a flowchart showing the detailed procedure of the normal measure melody pitch generation process, which implements the melody pitch deformation process 1).

  In the figure, first, a passage counter which is a soft counter secured in a predetermined area of the RAM 7 is initially set to "1" in order to count the number of passages (step S1).

  Next, a phrase counter, which is a soft counter secured in a predetermined area of the RAM 7 in order to count the number of phrases, is initially set to “1” (step S2). Similarly, a predetermined number in the RAM 7 is used to count the number of measures. A bar counter, which is a soft counter secured in the area, is initialized to “1” (step S3).

  Next, it is determined whether or not this measure is a measure in a new passage (step S4). If it is a measure in a new passage, a new melody creation processing subroutine for this measure (this subroutine will be described later with reference to FIG. 6). (Step S5), the process proceeds to step S21, but is not a measure in the new passage. If it is, that is, if it is a measure within the same name / similar passage, the process proceeds to step S6.

  In step S6, it is determined whether or not the skeleton of the current measure is the same as that of the reference measure. If they are the same, the process proceeds to step S7, and it is determined whether or not the code of the current measure is the same as the code of the reference measure. To do.

  If the chords of both measures are the same in step S7, the process proceeds to step S8. If the skeletons of both measures are not identical in step S6, or if the chords of both measures are not identical in step S7, the process proceeds to step S5. Then, the melody new creation subroutine of the measure is executed.

  In step S8, it is determined whether or not the rhythm patterns of both measures are the same. If they are the same, the melody of this measure is made the same as the reference measure (step S9). The pitch of hit points is the same, and the pitch of new hit points is newly generated (step S10), and then the process proceeds to step S21.

  After a melody pitch for one measure is generated in step S5 or S10, a musical evaluation subroutine (an example thereof will be described later with reference to FIG. 9) is executed in step S21. In the subsequent step S22, it is determined whether or not the generated melody pitch for one measure satisfies the musical evaluation in step S21. If satisfied, the process proceeds to step S11. Returns to step S4 to regenerate the melody pitch of the measure. In subsequent step S11, it is determined whether or not the processing in steps S4 to S10 has been completed for all the bars. If there are still bars to be processed, the bar counter is incremented by “1” (step S12). ) Later, the process returns to step S4 and repeats the above process. On the other hand, when the process is completed for all measures, the process proceeds to step S13.

  In step S13, a musical evaluation processing subroutine (an example thereof will be described later with reference to FIG. 8) is executed, and in subsequent step S14 of FIG. 5, it is determined whether or not the musical evaluation is satisfied.

If the musical evaluation is not satisfied in step S14, it is determined in step S15 whether correction is possible. Here, the determination as to whether or not correction is possible is performed as follows, for example.
That is, if the number of measures to be corrected in order to satisfy the musical evaluation is equal to or greater than a predetermined number, or if the number of points to be corrected is equal to or greater than a predetermined number, it is determined that correction is not possible (if less than the predetermined number, correction is possible). Alternatively, when a correction for satisfying musical evaluation is performed for a certain measure or a certain point, it is determined that correction is not possible when a new musical defect occurs (correction is possible when no musical defect occurs). Note that it may be determined whether or not the correction is possible based on other criteria.

  If the result of determination in step S15 is that correction is possible, the pitch of the bullet point of the measure that needs to be corrected is corrected according to the music rule (step S16). Then, it is determined whether or not the processing of steps S3 to S16 has been completed for all phrases (step S17). If there are still phrases to be processed, the phrase counter is incremented by “1” ( After step S18), the process returns to step S3, and the above-described processing is repeated.

  On the other hand, if the musical evaluation is satisfied in step S14, steps S15 and S16 are skipped and the process proceeds to step S17. Furthermore, when correction is not possible in step S15, the process returns to step S3, and the melody pitch generation process for all measures of the phrase is performed again.

  In the subsequent step S19, it is determined whether or not the processing in steps S2 to S18 has been completed for all the passages. If there are still passages to be processed, the passage counter is incremented by "1" (step S19). After step S20), the process returns to step S2 to repeat the above process. On the other hand, when the process is completed for all the passages, the normal measure melody pitch generation process is terminated.

  FIG. 6 is a flowchart showing the detailed procedure of the process of assigning the phrase skeleton nodes constituting the new melody creation process subroutine of the current measure in step S5 to the important hit points. Here, the phrase skeleton node means a node forming the phrase skeleton, which is generated by being deformed by the skeleton data deformation processing unit 33c, and the maximum number of nodes is 2 for each measure in the present embodiment. Individual.

  In the following, the algorithm will be described before the process of assigning the phrase skeleton node to the important hit point is described in detail based on the flowchart.

This process is configured by the following algorithm. That is,
1) Phrase skeleton nodes are assigned to important points only for normal measures, not for pickup measures. 2) In this embodiment, two phrase skeleton nodes are generated for one measure. Therefore, two important points (first and second important points) are detected for one measure, and the generated phrase skeleton node is assigned to each important point (however, a measure having a syllable number of “0”). Since there is no important point in the first place, this process is not performed, and there is only one important point in the measure with the syllable number “1”. Therefore, the phrase skeleton node generated for this one important point Assign one)
The first important spot is detected as follows. That is,
1) Priority 1: As a rule, the first point of the measure is detected as the first important point 2) Priority 2: If the first point of the measure is a short note and the second point is a long note, the second point Is detected as the first important hit point. The second important hit point is detected as follows. That is,
1) Priority 1: When the current measure is the last measure of the phrase, the last hit point of this measure is detected as the second important point 2) Priority 2: The third beat is detected as the second important point 3) Priority level 3: Detecting a hit point immediately before or immediately after the third beat as a second important hit point 4) Priority level 4: Detecting a hit point to which a long sound is assigned as a second important hit point The process of assigning this phrase skeleton node to an important hit point will be described based on a flowchart.

  In FIG. 6, first, it is determined whether or not the current measure is a pickup measure (step S31). If the current measure is not a pickup measure, that is, a normal measure, it is determined whether or not the number of syllables in this measure is “0”. A determination is made (step S32).

  If the number of syllables in this measure is not equal to 0 in step S32, the first important spot of the rhythm pattern of this measure is detected according to the above priority (step S33), and then the first node pitch of the phrase skeleton is set as the first important spot. Assign (step S34).

  On the other hand, when the current measure is a pickup measure in step S31, or when the number of syllables of the current measure is 0 in step S32, the process of assigning this phrase skeleton node to an important hit point is terminated.

  In the following step S35, it is determined whether or not the number of syllables of the current measure is “1”. When the number of syllables of the current measure is 1, the process of assigning the phrase skeleton node to the important striking point is finished, while the current measure is finished. When the number of syllables is not equal to 1, the second important hit point of the rhythm pattern of the current measure is detected according to the priority (step S36), and then the second nodal pitch of the phrase skeleton is assigned to the second important hit point (step S37). Later, the process of assigning this phrase skeleton node to an important hit point is terminated.

  FIG. 10 is a diagram illustrating an example of a melody pitch generated for a normal measure. In the figure, two types of rectangles, a filled rectangle and an outlined rectangle, are described. The filled rectangles are detected as important points in the measure as described above, and indicate points to which the node pitch of the phrase skeleton is assigned. The white squares indicate the hit points where the pitch is generated by the process of generating the hit point pitch between the important hit points shown below.

  In this way, since the node pitch of the phrase skeleton is assigned to the pitch of the important hit point, the skeleton can be reflected in the generated melody.

  FIG. 7 is a flowchart showing a detailed procedure of a process for generating a hit point pitch between important hit points that constitutes the new melody creation process subroutine of the current measure in step S5. Before describing this processing in detail based on the flowchart, the algorithm will be described.

This process is configured by the following algorithm. That is,
1) Generation of hitting pitch between important hit points is performed only for normal measures, not for picking measures. 2) With one interval between important hit points, the hit points for which no pitch has been generated yet (except for important hit points) 3) Process 2) is executed for all sections of the current measure. Specifically, the process 2) is performed as follows. That is,
1) Obtain the first node pitch and the last node pitch of the current section 2) The highest and lowest sound limits of the current section according to the first node pitch, the last node pitch obtained by the process 1) and the set dynamics. 3) Randomly determine the pitch of the hit points for which no pitch has yet been generated between the highest sound limit and the lowest sound limit. Next, the process of generating the hit point pitch between the important hit points Is described based on a flowchart.

  In FIG. 7, first, it is determined whether or not the current measure is a pickup measure (step S41). When the current measure is a pickup measure, the process for generating the hit point pitch between the important hit points is terminated, while the normal measure is not a pickup measure. If it is a measure, the process proceeds to step S42.

  In step S42, it is determined whether or not the number of syllables in the current bar is “0”. If the number of syllables in the current bar is 0, the process of generating the hit point pitch between the important points is finished, while the current bar is finished. When the number of syllables is not zero, the process proceeds to step S43.

  In step S43, a section counter, which is a soft counter secured in a predetermined area of the RAM 7, is initialized to “1” in order to count the number of sections. In subsequent step S44, the first node pitch and the last node pitch of this section are set. get.

  Then, based on the first node pitch, the last node pitch of the current section, and the set dynamics acquired in this way, the highest sound limit and the lowest sound limit of the current section are determined (step S45).

FIG. 11 is a diagram for explaining processing for determining the highest sound limit and the lowest sound limit in the current section. The highest sound limit and the lowest sound limit of this section, that is, the section between the first node pitch p1 and the last node pitch p2, are determined according to the set dynamics value as shown by the shaded area in the figure. To do. That is,
(A) Dynamics = 0: The lowest sound limit is determined to be the lower one of the first node pitch and the last node pitch (in the illustrated example, the first node pitch p1), and the highest sound limit is set to the remaining one (in the illustrated example, (B) Dynamics = 1: The lowest sound limit is, for example, 1 degree lower than the lower one of the first node pitch and the last node pitch (in the illustrated example, the first node pitch p1). The pitch is determined, and the maximum sound limit is determined to be one pitch higher than the remaining one (the last node pitch p2 in the illustrated example), for example. (C) Dynamics = 2: The minimum sound limit is the first node pitch or the last node pitch For example, the pitch is determined to be 3 degrees lower than the lower pitch (in the illustrated example, the leading node pitch p1), and the maximum sound limit is determined. The pitch is determined to be, for example, 3 degrees higher than the remaining one (the last node pitch p2 in the illustrated example). (D) Dynamics = 3: The lowest sound limit is the lower of the first node pitch or the last node pitch (see FIG. In the example shown, the pitch is determined to be, for example, 5 degrees lower than the first node pitch p1), and the highest sound limit is determined to be, for example, a pitch that is 5 degrees higher than the other one (the last node pitch p2 in the illustrated example). Then, in order to count the number of hit points in this section, a hit point counter which is a soft counter secured in a predetermined area of the RAM 7 is initialized to “1” (step S46).

Next, the pitch of the hit point is randomly determined within the range of the highest sound limit and the lowest sound limit in the current section (step S47). However, the random in this case is conditional random as follows. That is,
(A) Dynamics = 0: Randomly determine the pitch of the hit point so that the pitch between the hit point and the previous hit point is within ± 3 degrees. (B) Dynamics = 1: The pitch between the hit point and the previous hit point is (C) Dynamics = 2: Randomly set the pitch of the hit point so that the pitch between the hit point and the previous hit point is within ± 4 degrees. (D) Dynamics = 3: The pitch of the hit point is randomly determined so that the pitch between the hit point and the previous hit point is within ± 8 degrees. In the subsequent step S48, the step is performed for all the hit points in the current section. It is determined whether or not the processing of S47 is completed. If there are still points to be processed, the dot counter is incremented by “1” (step S49), and then the process returns to step S47 and the above-described processing. Repeating, when the processing has been completed for all strike proceeds to step S50.

  In step S50, it is determined whether or not the processing of steps S44 to S49 has been completed for all the sections. If there are remaining sections to be processed, the section counter is incremented by “1” (step S51). Returning to step S44, the above-described processing is repeated. On the other hand, when the processing is completed for all the sections, the processing for generating the hitting pitch between the important hitting points is ended.

Next, the musical evaluation executed in the phrase musical evaluation processing subroutine of step S13 will be described. Examples of musical evaluation include: That is,
1) Is the 4th note (avoid note) of the major I chord or minor III chord prohibited except for sequential progression? 2) Emphasis on the sense of termination when proceeding from the last V7 chord to the I chord. Is it a melody flow? 3) Is jumping more than 3 degrees from non-chord sounds suppressed? 4) Is the progression of 5th → 7th → 1st or 1st → 7th → 5th within a major chord prohibited? ) Is chord sound when jumping 3 or more times continues? 6) If jumping more than 5 degrees at 3 batting points, is chord sound in the second half? 7) Dorian scale 6th sound FIG. 8 is a flowchart showing a detailed procedure of a phrase musical evaluation processing subroutine for performing musical evaluation based on the musical evaluation example 1).

  In the figure, first, it is determined whether or not the key of this phrase is a major key (step S61). If it is not a major key, the musical evaluation process for this phrase is terminated, while if it is a major key, the process proceeds to step S62.

  In step S62, the hit point counter is initially set to "1", and in the subsequent step S63, the pitches of the immediately preceding hit point, the current hit point and the immediately following hit point are acquired.

  Then, it is determined whether or not the code of the three hit points acquired in step S63 is “I” (step S64). If it is I, it is determined whether or not the hit point is the fourth sound (step S65). .

  In step S65, when the hit point is the fourth sound, it is determined whether or not the three hit points are sequentially advanced (step S66). As a result, when progressing sequentially, the process proceeds to step S67, where it is determined whether or not the processing of steps S63 to S66 has been completed for all the hit points. If there are remaining hit points to be processed, the hit point counter is set to “1”. (Step S68), the process returns to step S63 and repeats the above process. On the other hand, when the process is completed for all the hit points, the evaluation is accepted (step S69), and the musical evaluation process of this phrase is performed. finish.

  On the other hand, if the three-batted chord is not “I” in step S64, or if the hit is not the fourth sound in step S65, the process skips step S66 and proceeds to step S67.

  Furthermore, if the three striking points are not sequentially advanced in step S66, the evaluation is rejected (step S70), and the musical evaluation process for this phrase is terminated.

  Next, an example of musical evaluation executed in the musical evaluation processing subroutine for the bar in step S21 will be described. For the musical evaluation of a measure, conditions that are completed within the measure (conditions that are not related to the preceding and following measures) are suitable. For example, there are the frequency of non-code sound included in the measure, the range of the sound included in the measure (width from the lowest sound to the highest sound), and the like.

  FIG. 9 is a flowchart showing a detailed procedure of a musical evaluation processing subroutine for measures in which musical evaluation is performed based on the level of the set non-code sound frequency (see FIG. 3).

  In the figure, first, the number of non-code sounds in the phrase is detected, and the frequency (%) for all the hit points in the phrase is calculated (step S81).

Next, the non-code sound setting level is determined, and the process branches as follows. That is,
1) Non-code sound setting level = 0; Steps S82 → S87
2) Non-code sound setting level = 1; Steps S82 → S83 → S88
3) Non-code sound setting level = 2; Steps S82 → S83 → S84
In step S87, it is determined whether or not the frequency of non-code sound is 0%. When frequency = 0, the evaluation is accepted (step S85). On the other hand, when frequency ≠ 0, the evaluation is not accepted. (Step S86).

  In step S88, it is determined whether or not the frequency of the non-code sound is 20 to 50%. If 20 ≦ frequency ≦ 50, the evaluation is passed (step S85), whereas the frequency <20 or 50 <frequency. Sometimes, the evaluation is rejected (step S86).

  In step S84, it is determined whether or not the frequency of the non-code sound is 51% or more. If frequency ≧ 51, the evaluation is accepted (step S85). On the other hand, if frequency <51, the evaluation is not acceptable. (Step S86).

  FIG. 12 is a flowchart showing a detailed procedure of the pick-up measure melody pitch generation process, which realizes the melody pitch deformation processes 2) b) to d).

  In the figure, first, the passage counter is initialized to “1” in the same manner as in step S1 (step S91), and the phrase counter is initialized to “1” in the same manner as in step S2 (step S92). ).

  Next, it is determined whether or not there is a pickup measure in the phrase (step S93). If there is no pickup measure, the process proceeds to step S106, and in steps S106 to S109, the same processing as in steps S17 to S20 is executed. If there is a pickup measure, the process proceeds to step S94 in FIG.

  In step S94, it is determined whether or not the current passage is a new passage. If the current passage is a new passage, the pitch curve of the current pickup measure is randomly selected according to the composition conditions, the range, etc. (step S95), and then the process proceeds to step S101. The melody of the pickup measure is generated according to the selected pitch curve and the set chord.

  FIG. 14 is a diagram showing an example of various pitch curves to be selected, and these various pitch curves are registered in advance in the music rule database 35 of FIG. 3, for example.

  In the process of step S95, one is selected at random from a plurality of candidates selected according to the composition conditions, the range, etc. set from various pitch curves as shown in FIG. For example, when “upward progression” and “sequential progression to phrase head sound” are set as the progression pattern from the last sound of the previous phrase to the head sound of this phrase (an example of composition conditions), the pitch curve is “ The pitch curve of pattern number 010 in "Sequential ascending progress" and the pitch curve of pattern number 030 of "Arpeggic ascending progress" are selected as candidates, and one of the pitch curves is selected at random and becomes the pitch curve of this measure It is determined.

  Returning to FIG. 13, if it is determined in step S94 that the current passage is not a new passage, that is, the same name / similar passage, it is determined whether or not the number of syllables is the same as the reference measure (step S96). As a result, when the number of syllables is the same, the pitch curve of the pickup measure is set to the same pitch curve as the reference measure (step S97), and then the process proceeds to step S99. Then, after selecting a pitch curve similar to the reference bar to obtain the pitch curve of the pickup bar (step S98), the process proceeds to step S101.

  In step S99, it is determined whether or not the reference measure and the chord are the same. When the chord is the same, the melody of the pick-up measure is made the same as the reference measure (step S100). Then, as described above, the melody of the pickup measure is generated according to the selected pitch curve and the set code.

  In the subsequent step S102, musical evaluation is performed in the same manner as in step S13. As a result, it is determined whether or not the phrase satisfies the musical evaluation (step S103).

  Since the processing after Step S103 is the same as the processing after Step S14, the description thereof will be omitted.

  Thus, in this embodiment, the melody pitch of the entire phrase is generated under the loose first melody generation condition, that is, the set dynamics, the number of syllables, etc. (particularly, in the new melody creation process of this measure in step S5) After the process, the generated melody pitch is evaluated according to the stricter second melody generation condition, that is, various music rules (particularly, the process in the musical evaluation process in step S13). ), It is possible to determine whether or not the music is satisfied in consideration of not only the past pitch but also the next pitch. Therefore, there is no musical inconvenience over the entire song. You can compose a song. Furthermore, as the first stage, a melody that uses only the pitches that meet the loose melody generation conditions is generated, so that the probability of failing the evaluation in the second stage is low and efficient melody generation is performed. be able to.

  Also, as a result of evaluation under strict melody generation conditions, those that pass are adopted, but those that fail are corrected and adopted if they can be corrected, and if they cannot be corrected, return to the beginning. Since the melody pitch is regenerated, there is a possibility that even a failed melody may be passed with some corrections, and therefore, an efficient melody generation can be performed.

  Furthermore, since the melody pitch of the normal measure and the melody pitch of the pickup measure are individually generated, it is possible to generate a melody of a pickup measure that satisfies various musical requirements.

  FIG. 15 shows an example of the melody pitch displayed on the display device 9, and the melody pitch generated as described above is displayed in a piano roll score.

  A general piano roll score displays a single octave and 12 notes including semitones, but in this embodiment, as shown in FIG. A / ♭ selection display field (the upper part indicates # and the lower part indicates ♭) saves display space and makes the melody line of the displayed melody easy to see. In particular, it can be seen at a glance whether or not the pitch of the melody is a key scale tone by the presence or absence of # / ＃. In addition, phrase sections are displayed as black bars in non-measure units, making it easier to see the melody lines in phrase units. This allows the user to easily recognize the beginning and end of a phrase, especially when the song contains a pickup measure (indicated by measure “0”). In FIG. 15, the bar color is black due to restrictions on the drawing, but the bar color is not limited to this, and may be displayed in any color.

  In addition, in the same figure, the vertical axis memory display is displayed with pitches such as “C5” and “B5”, but it may be displayed with the name of Doremifasolaside, and the notation does not change even if the key changes. If it is displayed in the moving dosing method, it is always easy to understand in any key. Further, when there is a modulation in the middle of a song and there are a plurality of keys on one display screen, the memory display on the vertical axis may be displayed at the modulation position.

  The generated melody pitch may be edited on this piano roll score. For example, the position of the hit point and the pitch of the hit point may be corrected by dragging the mouse, or the position of the hit point and the pitch of the hit point may be corrected by clicking the mouse. It may be possible to add or delete # / ♭ by a click operation or the like.

  In the present embodiment, the melody skeleton data is stored in the template, and the pitch of the melody skeleton data is assigned to the important hit points after being deformed as necessary. However, the present invention is not limited to this. The melody skeleton data may be generated on the basis of the melody skeleton, and the melody skeleton pitch may be assigned to the important hit points after being deformed as necessary. In addition, the transformation may be performed based on a predetermined algorithm, or a user operation (for example, melody skeleton data is displayed on a display screen and a mouse drag operation is performed on the display screen, etc.) ) May be modified.

  In the present embodiment, the melody pitch data is generated based on the melody skeleton data having a hierarchical structure such as the whole skeleton, the phrase skeleton, and the phrase skeleton, but the melody skeleton data not having such a hierarchical structure, For example, the melody pitch data may be generated based on the phrase skeleton data having only one song.

  Next, an automatic musical composition apparatus according to another embodiment will be described.

  In the above-described embodiment, when the pitches of important hit points are generated, if the pitches of the first node pitch and the last node pitch are small (extremely, the pitch is “0”), the maximum sound limit of this section is set. Since the width of the minimum sound limit is determined to be narrow, the pitch between the generated hitting pitches becomes too small. As a result, only a monotonous melody can be obtained. To compensate for this, simply widening the range of the highest sound limit and the lowest sound limit of this section, this time, when the pitch of the first node pitch and the last node pitch is large, The width of the sound limit becomes too wide. This embodiment is made to eliminate this problem.

  The automatic musical composition apparatus of the present embodiment is a part of the processing (see FIG. 7) for generating the hit point pitch between the important hit points, that is, in step S45 of FIG. The method of “determining the highest sound limit and the lowest sound limit for this section” is different. More specifically, in the above-described embodiment, as described above, the highest sound limit and the lowest sound limit of the current section are determined according to the values and dynamics of the first and last node pitches of the current section. On the other hand, in the present embodiment, the pitch of the first node pitch and the last node pitch are added to the values and dynamics of the first node pitch and the last node pitch, and the highest sound limit and the lowest sound of this section are accordingly added. The difference is that the limit is determined.

  The process of generating the hit point pitch between the important hit points in the present embodiment can be realized by replacing step S45 in FIG. 7 with steps S45a and S45b in FIG. That is, in FIG. 16, first, the pitch Pdif between the first node pitch and the last node pitch is calculated (step S45a), and the calculated pitch Pdif, the first node pitch, the last node pitch, and the set dynamics are calculated. The highest sound limit and the lowest sound limit of the current section are determined (step S45b).

FIG. 17 is a diagram for explaining processing for determining the highest sound limit and the lowest sound limit in the current section, and corresponds to FIG. As shown in the shaded area in the drawing, the maximum sound limit and the minimum sound limit of the current section, that is, the section between the first node pitch p1 and the last node pitch p2, are represented by the pitch Pdif (= | p2-p1 |; The unit is determined according to the frequency) and the set dynamics value. That is,
1) Pdif ≦ 2
a) Dynamics = 0: The lowest sound limit is determined to be, for example, 3 degrees lower than the lower one of the first node pitch and the last node pitch (first node pitch p1 in the illustrated example), and the highest sound limit remains. B) Dynamics = 1: The lowest sound limit is the lower of the first node pitch or the last node pitch (in the illustrated example, the lower node pitch p2). , For example, a pitch 4 degrees lower than the first node pitch p1), and the highest sound limit is determined, for example, a pitch 4 degrees higher than the remaining one (the last node pitch p2 in the illustrated example). C) Dynamics = 2: The lowest note limit is either the first node pitch or the last node pitch, whichever is lower (in the example shown, the first node pitch p1) , For example, to determine the 5 degrees below the pitch, the maximum sound limit (in the illustrated example, the last node pitch p2) remaining one 2 determined from, for example, 5 degrees higher pitch) 2 <Pdif ≦ 5
a) Dynamics = 0: The lowest sound limit is determined to be, for example, twice lower than the lower one of the first node pitch and the last node pitch (in the illustrated example, the first node pitch p1), and the highest sound limit remains. B) Dynamics = 1: Same as 1) a) above (however, each of the determined minimum sound limit and maximum sound limit is determined). The values are different from the values determined in 1) a) above. The same applies below)
c) Dynamics = 2: Same as 1) b) above 3) 5 <Pdif
a) Dynamics = 0: The lowest sound limit is determined to be the lower one of the first node pitch and the last node pitch (in the illustrated example, the first node pitch p1), and the highest sound limit is determined to be the remaining one (in the illustrated example, B) Dynamics = 1: Same as 2) a) c) Dynamics = 2: Same as 1) a) Thus, in the present embodiment, in particular, the first node pitch and the last node pitch are determined. Since the maximum sound limit and the minimum sound limit width are determined according to the pitch of the nodal pitch, it is possible to generate a hit point pitch between important hit points intended by the user.

  Although the expansion range from the highest sound limit and the expansion range from the lowest sound limit are the same, they may be different.

  In the present embodiment, when the highest sound limit and the lowest sound limit of the current section are determined, the set dynamics value is used as it is (see step 45b in FIG. 16). The dynamics value is changed in accordance with the calculated pitch Pdif (see step S202 in FIG. 18 described later; that is, if the pitch Pdif is small, the dynamics value is changed to a value larger than the set value). The highest sound limit and the lowest sound limit for this section may be determined according to the pitch and the last node pitch. Even in this case, substantially the same effect can be obtained.

  Next, an automatic composition apparatus according to still another embodiment will be described.

  In each of the above embodiments, when the hit pitch between important hit points is generated, the same is applied when the number of syllables included in the current section is large and the width of the highest sound limit and the lowest sound limit in the current section is narrow. As a result, many pitch hit points are generated, and as a result, only a monotonous melody can be obtained. This embodiment is made to eliminate this problem.

  The automatic musical composition apparatus of the present embodiment is realized by adding the process of FIG. 18 to the process (see FIG. 7) for generating the hit point pitch between the important hit points of the above embodiment. Specifically, the processes of steps S200 to S202 of FIG. 18 are added between step S44 and step S45 of the process of generating the hit point pitch between the important hit points of FIG.

  In FIG. 18, in step S200, it is determined whether or not the number of syllables in this section is 4 or less. If the number of syllables ≦ 4, the process proceeds to step S45 without doing anything, and if the number of syllables is 5 ≦ step S201. Proceed to

  In step S201, it is determined whether or not the currently set dynamics is the maximum settable dynamics value. If not, the dynamics value is incremented by "1" (step S202), While the process proceeds to S45, when the value is the maximum value, the process skips step S202 and proceeds to step S45.

  As described above, in this embodiment, when the number of syllables included in this section is large, the value of the dynamics is increased, so that the range of the maximum sound limit and the minimum sound limit of this section is widened. Since more hit points with different pitches are generated, it is possible to generate a hit point pitch between important hit points intended by the user.

  In the present embodiment, the dynamics value is not changed even when the number of syllables included in this section is small. However, the present invention is not limited to this, and the number of syllables is small (for example, two or less). May decrease the value of dynamics (for example, “−1”).

  Further, the increase / decrease value of the dynamics is fixedly set to ± 1 in the present embodiment, but is not limited thereto, and may be changed according to the number of syllables, for example, or other fixed values (For example, ± 2 or + 2 & -1) may be set.

  In addition, the maximum sound limit and the minimum sound limit are increased according to the number of syllables in the same way as the maximum sound limit and the minimum sound limit are expanded according to the pitch of the first node pitch and the last node pitch. The width may be increased.

  Note that a storage medium in which a software program that realizes the functions of the above-described embodiments is recorded is supplied to the system or apparatus, and the computer (or CPU 5 or MPU) of the system or apparatus is stored in the storage medium. It goes without saying that the object of the present invention can also be achieved by reading and executing.

  In this case, the program itself read from the storage medium realizes the novel function of the present invention, and the storage medium storing the program constitutes the present invention.

  As a storage medium for supplying the program, for example, the hard disk of the HDD 11, CD-ROM 21, MO, MD, floppy (registered trademark) disk 20, CD-R (CD-Recordable), magnetic tape, nonvolatile memory A card, ROM, or the like can be used. Further, the program may be supplied from the server computer 102 via another MIDI device 100 or the communication network 101.

  Further, by executing the program read by the computer, not only the functions of the above-described embodiments are realized, but the OS running on the computer based on the instructions of the program performs the actual processing. Needless to say, a case where the function of the above-described embodiment is realized by performing part or all of the processing, is also included.

  Further, after the program read from the storage medium is written in a memory provided in a function expansion board inserted into the computer or a function expansion unit connected to the computer, the function expansion board or It goes without saying that the CPU 5 or the like provided in the function expansion unit performs part or all of the actual processing, and the functions of the above-described embodiments are realized by the processing.

It is a block diagram which shows schematic structure of the automatic musical composition apparatus which concerns on one embodiment of this invention. It is the figure which represented visually various control processing which the automatic composition apparatus of this embodiment performs. It is the figure which represented visually various control processing which the automatic composition apparatus of this embodiment performs. It is a flowchart which shows the detailed procedure of a normal measure melody pitch production | generation process. It is a flowchart which shows the detailed procedure of a normal measure melody pitch production | generation process. It is a flowchart which shows the detailed procedure of the process which allocates the phrase skeleton node which comprises the melody new creation process subroutine of this measure of FIG. 4 to an important hit point. It is a flowchart which shows the detailed procedure of the process which produces | generates the hit point pitch between the important hit points which comprises the melody new creation process subroutine of this measure of FIG. It is a flowchart which shows the detailed procedure of the musical evaluation process subroutine of the phrase of FIG. It is a flowchart which shows the detailed procedure of the musical evaluation process subroutine of the bar of FIG. It is a figure which shows an example of the melody pitch produced | generated with respect to the normal measure. It is a figure for demonstrating the process which determines the highest sound limit and the lowest sound limit of this area. It is a flowchart which shows the detailed procedure of a pick-up measure melody pitch production | generation process. It is a flowchart which shows the detailed procedure of a pick-up measure melody pitch production | generation process. It is a figure which shows an example of the various pitch curves selected. It is an example of the melody pitch displayed on the display apparatus of FIG. It is a flowchart which shows a part of procedure of the process which produces | generates the hit point pitch between the important hit points which the automatic musical composition apparatus which concerns on other embodiment performs. It is a figure for demonstrating the process which determines the highest sound limit and the lowest sound limit of this area in other embodiment. It is a flowchart which shows a part of process which produces | generates the hit point pitch between the important hit points which the automatic musical composition apparatus which concerns on other embodiment performs.

Explanation of symbols

  2 Panel switch (pitch range information setting means, syllable number setting means), 5 CPU (melody pitch generation means, skeleton nodal pitch generation means, important hit point detection means, allocation means, pitch difference calculation means), 9 display device

Claims (4)

Skeleton node pitch generating means for generating a skeleton node pitch forming the skeleton of the song;
An important spot detection means for detecting an important spot from a rhythm pattern;
Assigning means for assigning the generated skeletal node pitch to the detected important hit points;
Melody pitch generating means for generating a melody pitch between the important hit points;
In the automatic composition apparatus having
A pitch difference calculating means for calculating a pitch difference between the skeleton node pitches ;
Pitch range information setting means for setting pitch range information indicating a pitch range including a melody pitch after generation when generating a melody pitch between the important hit points , based on the calculated pitch difference ;
Have,
The melody pitch generating means, before SL according to the set pitch range information and the pitch of the framework node, the important tone between the own operation songs apparatus you and generates the melody pitch. Skeleton node pitch generating means for generating a skeleton node pitch forming the skeleton of the song;
An important spot detection means for detecting an important spot from a rhythm pattern;
Assigning means for assigning the generated skeletal node pitch to the detected important hit points;
Melody pitch generating means for generating a melody pitch between the important hit points;
In the automatic composition apparatus having
Syllable number setting means for setting the number of syllables between the important hit points ;
Pitch range information setting means for setting pitch range information indicating a pitch range including a melody pitch after generation when generating a melody pitch between the important hit points , based on the set number of syllables ;
Have,
The melody pitch generating means, before SL according to the set pitch range information and the pitch of the framework node, the important tone between the own operation songs apparatus you and generates the melody pitch. A skeleton node pitch generation step for generating a skeleton node pitch forming the skeleton of the song;
An important spot detection step for detecting an important spot from the rhythm pattern;
An assigning step for assigning the generated skeletal node pitch to the detected important hit points;
A melody pitch generating step for generating a melody pitch between the important hit points;
In a computer-readable storage medium storing a program for causing a computer to execute an automatic music composition method having
The automatic music method is :
A pitch difference calculation step of calculating a pitch difference between the previous SL skeleton node pitches,
A pitch range information setting step for setting pitch range information indicating a pitch range including a melody pitch after generation when generating a melody pitch between the important hit points , based on the calculated pitch difference ;
Have,
The melody pitch generating step, prior SL according to the set pitch range information and the pitch of the framework node, the important tone between to that Symbol憶媒body and generating a melody pitch. A skeleton node pitch generation step for generating a skeleton node pitch forming the skeleton of the song;
An important spot detection step for detecting an important spot from the rhythm pattern;
An assigning step for assigning the generated skeletal node pitch to the detected important hit points;
A melody pitch generating step for generating a melody pitch between the important hit points;
In a computer-readable storage medium storing a program for causing a computer to execute an automatic music composition method having
The automatic music method is :
And syllable number setting step for setting the number of syllables between the front Symbol important tone,
A pitch range information setting step for setting pitch range information indicating a pitch range including a melody pitch after generation when generating a melody pitch between the important hit points , based on the set number of syllables ;
Have,
The melody pitch generating step, prior SL according to the set pitch range information and the pitch of the framework node, the important tone between to that Symbol憶媒body and generating a melody pitch.

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