JP3035925B2 - Sub-melody generator and music part generator - Google Patents

Description

Description: TECHNICAL FIELD [0001] The present invention relates to a music device, and more particularly, to a secondary melody generation device and a music part generation device.

[Prior art and its problems] There is known an automatic accompaniment apparatus for automatically generating an accompaniment line or a sub-melody such as a counter melody, an obligato, a base line, an arpeggio, and the like. This type of automatic accompaniment device has been incorporated into electronic musical instruments as a function. Typically, when a melody (main melody) is input from a melody keyboard and a chord progression is designated and input from an accompaniment keyboard, a sub melody is internally generated. The generated musical sound is output through the sound source along with the musical sound of the main melody along with the musical sound of the sub melody.

Regarding the generation of the sub melody, the conventional technology has a pattern (called an accompaniment pattern) which is the basis of the sub melody in the device. Basically, an accompaniment pattern is composed of a time (horizontal, rhythm, pitch) component, ie, a rhythm pattern, and a pitch (vertical) component, ie, a pitch pattern. In many cases, accompaniment patterns are prepared for each rhythm specified from the input device of the automatic accompaniment device. Therefore, once a rhythm is specified, the rhythm pattern (length sequence) of the accompaniment is fixed, and the main melody of the main melody is fixed. It does not change automatically depending on how it is, and is a factor that gives a mechanical impression about automatic accompaniment.

On the other hand, the pitch pattern, which is a vertical element of the accompaniment pattern, is represented by an abstract pitch pattern or a pitch pattern formed before pitch modification by a chord.

In the first conventional example, the pitch pattern that forms the basis of the sub-melody performance is a specific chord (for example, a C major chord).
The chord specified by the chord progression providing means in the operation has the pitch information to be played when it is assumed that the pitch of the pitch pattern is appropriately changed according to the type and root note of the chord. Is generated, and is used as the pitch pattern of the sub melody to be actually played. This configuration is suitable for saving the data amount and storage capacity required for the pitch pattern which is the basis of the sub melody performance, but musically, the specified chord and the pitch pattern of the sub melody to be played are one. Since the correspondence is fixed at one-to-one, it is inevitable that the performance of the sub melody becomes monotonous.

In another conventional example, each element of a pitch pattern that is the basis of a sub-melody performance is given in a form expressing the type of chord constituting sound. Then, in operation, when the current chord is newly designated by the chord progression providing means, each element of the basic pitch pattern is decoded according to the pitch information of the constituent sounds of the current chord and changed to a specific pitch. For example, the first constituent sound of the designated chord constituent sound is C, the second constituent sound is
When the constituent sound is E and the third constituent sound is A, an element expressing the third constituent sound in the basic pitch pattern is assigned to pitch A. This configuration also has the same problem as the first prior art, that is, when the chord progression is specified, the sub-melody to be played is determined, and the change is poor.

As another conventional technique, there is a technique in which a block chord performance is performed together with the performance of the main melody. In this prior art,
The rhythm of the accompaniment and the rhythm of the main melody are synchronized. For this reason,
The melody note on / off information from the main melody providing means is used as it is as the accompaniment note on / off. Further, regarding the pitch, among the constituent sounds of the current chord from the chord progression imparting means, a chord constituent sound having a predetermined relation (for example, the closest relation) to the current melody note is used as a reference (for example, the highest accompaniment sound). Is adopted as a pitch configuration of an accompaniment, in which a pitch configuration (chord configuration) in which the chord configuration notes are developed in the vertical direction. As a result, the melody performance and the accompaniment are integrated, and the block chord performance is performed as a whole. However, such a block chord performance is only a special performance form, and this prior art recognizes other general melody performances, especially the main melody part and the sub melody part as separate music parts. Cannot perform such a performance.

Generally, polyphonic music having a plurality of music parts related to a composer's composition has a favorable interaction between the music parts that is recognized as musical. The exact logical representation of what the preferred interaction is (knowledge of the rules of generation of the interaction) is not known at this stage, but conventional techniques have ignored or extremely simplified this point. It is a device and leaves much room for improvement.

[Object of the Invention] Accordingly, a main object of the present invention is to provide a sub-melody generation device and a music part generation device capable of automatically generating natural and realistic sub-melody and music parts.

Further, a specific object of the present invention is to automatically generate a secondary melody or a music part having an appropriate temporal correlation with a given main melody or another music melody part with respect to a flow of a pitch (pitch). It is an object of the present invention to provide a sub melody generating device and a music part generating device capable of performing the above.

Further, a specific object of the present invention is to make it possible to automatically generate a sub-melody or a music part that has an appropriate temporal correlation with a given main melody or another music part with respect to the flow (rhythm) of the pitch. A melody generation device and a music part generation device are provided.

Further, a specific object of the present invention is to provide not only a pitch flow (pitch line) but also a pitch flow (rhythm) for a given first melody part through a time element. An object of the present invention is to provide a sub melody generating device capable of generating a second melody part that changes under the influence.

According to the present invention, the first melody part assigning means for assigning information on the first melody part of the music, and the progression of the pitch set usable in the second melody part of the music Information of the second
Second melody part basic data providing means for providing as basic data of the melody part, and information on the currently available pitch set and the information of the first melody part in the progress of the usable pitch set. Determining the current pitch information of the second melody part based on predetermined future pitch information or pitch information at a plurality of time points having a predetermined time relationship with the present; And a second melody part generating means for generating melody part information.

According to this configuration, the action from the pitch information of the first melody part can be given to the pitch information of the second melody part via a temporal element. Therefore, even if the progression of the pitch set usable in the second melody part provided by the second melody part basic data providing means is fixed to a specific progression, the second melody part finally obtained is obtained. Can vary in a variety of ways depending on the first melody part and in a manner different in time from the first melody part, and can effectively solve the problem of monotony in the conventional secondary melody generation technique.

The progress of the pitch set may be the progress of a normal chord (chord).

In one configuration example, main melody providing means for providing information on the main melody of the music, chord progression providing means for providing information on the chord progression of the music, and current chord information without using past chord information of the chord progression. Sub-melody generating means for generating at least one sub-melody of the music by determining current pitch information of the sub-melody based on the past melody pitch information of the main melody and the sub-melody Generating means for determining, as the current pitch information, a chord constituent sound having a predetermined pitch relationship with the melody pitch information among the chord constituent sounds of the current chord information; A sub-melody generation device is provided.

In the case of this configuration, the secondary melody is obtained in such a manner as to be read by the main melody, so that a performance effect such as canon or fugue can be provided.

In an environment where the information of the main melody is given in advance, the future melody pitch information of the main melody is used as a parameter for determining the current pitch information of the sub melody instead of the past melody pitch information of the main melody. it can. In this case, a melody of Canon and Fugue in which the sub melody plays the lead role is realized. Also, in the melody pitch information of the main melody,
The melody pitch information at a plurality of different points in time having a predetermined information relationship with the present may be adopted as a parameter that acts on the current pitch information of the sub melody. This simulates a more general interaction between the main melody and the secondary melody. Preferably, the pitch information is determined by a linear combination of the melody pitch information at a plurality of different times, from the determined pitch information and the current chord information of the chord progression,
The current pitch information of the sub melody is required.

The relationship between the current pitch of the secondary melody, the pitch information of the main melody that affects it, and the current chord information of the chord progression is, for example,
Among the constituent tones of the current chord, the chord constituent tones having a predetermined pitch relationship with the pitch information of the main melody, for example, the chord constituent tones closest to the pitch information of the main melody are specified as the current pitch of the sub melody. Is done.

Further, according to another aspect of the present invention, a first part assigning unit for assigning information of a first part of a music and a combination of a plurality of tone length information of the first part at different time points. A music part generation device is provided, comprising: second part rhythm generation means for generating the rhythm of the second part by determining the current duration information of the second part of the music.

According to this configuration, the second part having the rhythm related to the given rhythm of the first part through the temporal element can be automatically generated. This simulates the interaction of rhythm components between music parts in polyphonic music.

The second part may be a melody part whose pitch changes, or a rhythm part having no particular melody. In the latter case, a kind of automatic rhythm generating device will be provided.

Depending on the situation, in response to the main melody and chord progression input in real time, the secondary melody is generated in real time,
It is desirable to output the main melody and the sub melody in real time.

For this purpose, in one configuration example, main melody performance input means for inputting performance information of the main melody of the music in real time, main melody output means for outputting a tone of the main melody in response to the input performance information of the main melody, Main melody storage means for storing the performance information of the main melody, a chord progression input means for inputting the chord progression of the music in real time,
In response to the input from the chord progression input means, a current code detection means for detecting a current code, and without using past code information, the current code detected by the current code detection means and the main melody storage means A determination means for determining, in real time, the current pitch information of the sub melody based on the pitch information included in the performance information of the past for a predetermined time from the present time in the stored performance information of the main melody, A sub-melody generating means including determining means for determining, as the current pitch information, a chord-constituting sound having a predetermined pitch relationship with the pitch information among the chord-forming sounds of the current chord information; And a sub-melody output device for outputting a sub-melody musical tone in response to the performance information of the sub-melody from the sub-melody.

In the above configuration example, the secondary melody generating means is configured to perform the above-mentioned main melody storage means in the main melody storage means on the basis of the duration information included in the past performance information for the predetermined time from the present time in the past performance information. The present invention may further include means for determining current pitch information of the sub melody in real time. In this case, not only the pitch line but also the rhythm is generated as a secondary melody with characteristics similar to the performance of the past main melody,
It can simulate the canonical performance effect following the main melody in a relatively pure form.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In brief, the present embodiment is incorporated in a keyboard-type electronic musical instrument, in which performance information of a main melody (melody) is input from a melody keyboard, and the musical tone is output in real time through a sound source. On the other hand, chord progression information is input from the accompaniment keyboard, and a designated chord is detected sequentially in the input process. The sub melody is generated by using the rhythm of the melody one bar before the melody, and the pitch line as the chord constituent sound of the current chord closest to the melody pitch one bar before. The generated secondary melody is also output as a musical tone through the sound source, and a canon-like performance effect is realized.

FIG. 1 shows the overall configuration of an electronic musical instrument 1 according to the present embodiment. The key 2 is a main melody for this embodiment.
And an accompaniment keyboard for inputting a chord progression by designating a sequential chord. This can be realized by dividing the one-stage keyboard by the key range or by assigning each of the two-stage keyboard to a melody keyboard and an accompaniment keyboard. The RAM 3 is used as a work area of the CPU 4, and various variables are temporarily stored. The ROM 5 stores programs, code configuration sound tables, and the like. Sound source 6 is CP
Generates music under the control of U4. As described below,
In the operation of this embodiment, the musical tone relating to the sub melody performance automatically generated according to this embodiment is generated and output together with the musical tone relating to the melody performance from the melody keyboard through the sound source 6.

FIG. 2 is referred to by the CPU 4 in the operation of the embodiment,
Shows a list of the main variables used. T is a variable representing the current time. Specifically, the time variable T represents a time slot when one bar is divided into a plurality of time slots (for example, 96 time slots), that is, a timing in a bar. CR is a variable expressing the root of the current chord, CT is a variable expressing the type of the current chord,
The current code is represented by these two variables CR and CT. The current chord information (CR, CT) is updated each time a new chord is designated from the accompaniment keyboard. EL
Is a variable or register that represents the pitch of the current secondary melody. MD [] is an array for storing melody sound data. Here, in order to store the melody information from the current bar to the previous bar, it is composed of elements equal to the bar resolution of 96. The storage processing in the array is performed cyclically in units of the bar resolution so that the pitch is located at the beginning of the array MD [] and the last pitch of the bar is located at the end of the array MD []. Therefore, the melody pitch data of one bar before the current melody pitch data is stored in the element on the array MD [] having the current time T as an argument immediately before the storing process to the element. The high information is referred to in the processing for determining the current pitch EL of the sub melody. CKT [] is a chord composition sound table,
A specific example is shown in FIG.

FIG. 2 also shows the type of each variable. At present, the code type CT has a variable type as a code type, and the other variables are melody type variables. The meanings of the chord type and melody type variables are as defined in FIG. That is, the melody type variable is such that the numerical value “−1” indicates off, that is, no sound, the numerical value “0” indicates the pitch C2, and thereafter, each pitch is incremented by 1 every semitone. C
# 2, d2, d # 2... In relation to the off data “−1” in the melody type, the melody sound storage array MD [] has a melody type variable type,
Time is represented by the array element number (memory address). Therefore, the melody rhythm information is indirectly included in the array MD []. As will be described later, the current time T, which is referred to at the time of sound control of the sub melody,
When the array element MD [T], ie, the melody pitch register one bar before, is off, the sub-melody tone is silenced, and when the pitch information is indicated, the sub-melody tone is generated. Thereby, the rhythm of the sub melody can be controlled to a pattern that follows the rhythm of the main melody (melody) with a delay of one measure.

On the other hand, for the code type variables, the numerical value “0” is, for example, a major (maj) code type, “1” is a minor (min) code type, “2” is a minor seven (min7) code type, and “3” is Different chord types can be represented for each numerical value, such as major seven (maj7) chord types. Chord composition sound table CKT of FIG.
[] Is an array in which the value of a variable of this code type is one of the arguments.
Four consecutive array elements (storage areas) are reserved for each chord as being composed of three constituent sounds, and the contents of the array elements are adjusted according to the actual number of constituent sounds. For the code, one of the four array elements
One is masked to off (numerical value “−1”). In FIG. 4, for example, "0" is the pitch of C2, 4 is the pitch of E2, and "7" is the pitch of G2 according to the definition of FIG. Actually, it is easier to understand that a numerical value equal to or greater than "0" represents a pitch difference (pitch) from the chord root. For example, 0, 4, and 7 respectively represent a chord root (a note of the same pitch), a major third above the chord root, and a full fifth above the chord root, and thus the major Configure the code. A specific (absolute) pitch expression of a chord constituent sound is such that when an absolute value of a root note of a chord is given, the absolute value of this root note (for example, a numerical value 2 representing d2) is stored in the chord constituent sound table It is obtained by adding to the pitch data of each chord (0, 4, 7 if major).

FIG. 5 shows a main routine of the operation of the embodiment. In the main routine, key processing 5 for detecting key information from the keyboard 2
-1 and the sound source processing 5-2 for controlling the sound source 6 is performed. However, the object of sound generation and mute performed in the sound source processing 5-2 is the key information from the melody keyboard and therefore the main melody, and the sound generation and mute processing for the sub melody is performed in the time interrupt routine shown in FIG.

The time interrupt routine in FIG.
For example, it is activated every 1/96 bar. First, the current time T is incremented (6-1), and when it is indicated that one bar has elapsed since the value has exceeded 95, 96 is subtracted from T (6-2, 6-3). Next, in 6-4, a chord process for detecting the current chord from key information from the accompaniment keyboard is performed. Subsequently, the sub melody processing 6-5 is performed in 6-5, and the melody storage processing is performed in 6-6.

The details of the chord processing 6-4 are as shown in FIG. 7. The chord type and the root note are determined in a well-known manner from the depression of the accompaniment keyboard (7-1). Root
This is performed by storing in the CR (7-2).

FIG. 8 is a flowchart of the sub melody processing 6-6,
At 2-1, it is determined whether the melody array element MD [T] one bar before is off, and if it is off, the sub melody is muted (8-
2) If not, perform the sub-melody pronunciation processing (8-3). MD [T] referred to in 8-1 is a melody array element having the current time T as an argument. Here is the melody array MD
[] Indicates the end of the interrupt routine (FIG. 6).
In FIG. 6, as shown in FIG. 9, in the array element MD [T] of the current time T, the current key press information from the melody keyboard, that is, the current melody pitch information (in the absence of the melody pitch information, a numerical value “−” indicating off Created by storing 1 "). The next element of this array element contains the melody pitch information one bar before, which is referred to in this 8-1 in the next time interrupt routine pass. As will become clear from the explanation below, the pitch information MD one bar before
By dividing the mute of the sub melody and the sound generation process depending on whether [T] is off, the rhythm of the sub melody can follow the rhythm one measure before the main melody.

Details of the sub melody pronunciation processing 8-3 are shown in FIG. First, it is determined at 10-1 whether or not the current code is specified. CR = of
If f, do nothing because no code is specified. If specified, the corresponding chord constituent sound is found in the sub-melody chord constituent sound search processing loop of 10-2, 10-3, and 10-4. Here, the melody pitch MD one bar before
A logic is adopted in which the chord constituent sound closest to [T] is used as the current sub-melody pitch. Therefore, as shown in 10-2 and 10-4, while lowering the melody pitch MD [T] one measure before by one semitone, it is sequentially determined whether or not it is a chord constituent sound (indicated by the variable i). Checked in 10-3. A check as to whether or not the candidate pitch i is a chord constituent sound is performed according to the flow of FIG. As shown in FIG. 4, since the constituent sounds of each chord are formally arranged in four consecutive array elements as shown in FIG. 4, by multiplying the current chord type CT by four, the chord constituent sounds are multiplied. The position A where the first chord constituent sound of the chord of the current chord type is placed on the table is calculated (11-1). While moving the relative position j from 0 to 4 (11-2, 11-7), the pitch CKT [A + j] of the chord constituent sound is successively changed to the root pitch CR of the current chord.
The pitch class of the constituent sound of the chord × 1 (one from C to B) is obtained by taking mod12 to the sum of (11−
3) Similarly, the pitch class × 2 of the pitch candidate i is obtained (11-4), and the pitch classes are compared (11-5). The flow is recognized as the chord constituent sound closest to the melody pitch of (1), and the flow exits. If they do not match, the relative position j is moved to the next position (11-6).

Returning to FIG. 10, when the chord component tone i closest to the melody pitch MD [T] one bar before is detected, it is checked at 10-5 whether or not it is the same as the pitch EL of the previous sub-melody. Can be If they are the same, exit to the flow without doing anything. This prevents re-sounding of the same sound. On the other hand, if different, a sub-melody tone having this pitch i is pronounced at 10-6 (10-6), and this pitch i is stored as the current sub-melody pitch EL (10-7).

As is apparent from the above description, according to the present embodiment,
Under the situation where the melody is input from the melody keyboard and the chord progression is input from the accompaniment keyboard, the current note of the chord progression and the pitch of one measure before the melody (main melody) and the current tone of the secondary melody are real-time. It is generated and output in real time along with the melody tone through a sound source. As a result, the performance of the sub melody follows the performance of the main melody (melody), and a canon-like effect is achieved.

[Modifications] Although the description of the embodiments has been finished above, various modifications and changes are easy within the scope of the present invention.

For example, in the above embodiment, one sub melody is automatically generated, but a plurality of sub melody may be automatically generated. For example, while securing a melody for two measures in the melody array MD [], the first sub-melody generates its current sound information as a function of the melody sound information one measure before, and generates the current sound of the second sub-melody. The information is generated as a function of the melody sound information two measures before. By doing so, richer polyphonic music performance can be performed.

If the main melody information and the chord progression information are given in advance (for example, the main melody information and the chord progression information from the performance input device are stored in the memory in the performance mode only for the user). In this case, future main melody information (at least one of pitch information and pitch information) can be used as a basis for the current sound information of the sub melody instead of the past. Also, among the main melody information or other music part information, sound information at a plurality of times having a predetermined relationship with the present may be used as a parameter acting on the current sound information of the sub melody. For example, the pitch MD [T1] of the main melody at a first time point T1 having a predetermined time difference from the present time and the pitch MD [T] of the main melody at a second time point T2
2] and MD = W1 × MD [T1] + W2 × MD [T2] (where W1 and W2 are weighting factors), pitch information MD acting on the current pitch of the sub-melody by linear combination as exemplified by If this MD is used instead of the melody pitch information MD [T] one bar before in this embodiment,
A more subtle correlation can be provided between the main melody and the secondary melody. If the coefficients W1 and W2 can be fixed values,
A variable value generated in combination with a small random number component may be used. Furthermore, a weight pattern whose value changes with music time
The data of W1 (t) and W2 (t) are prepared in advance, the elements of the weight pattern corresponding to the current time are extracted, and
It may be used as W1 and W2 in the MD equation. The linear combination of the above MD equation is a linear combination of two melody sound elements, but may be a linear combination of three or more melody sound elements.

Further, the point of time of the main melody (relative time with respect to the present time) acting on the sound information of the current sub melody may be variable depending on the music time (for example, a passage).

Further, when the present invention is applied to control of the pitch, the line whose pitch is controlled does not necessarily require melody, and can be applied to a simple rhythm part.

Regarding the control of the pitch of the sub melody to be generated, in the above embodiment, all the sounds of the sub melody are selected from among the constituent sounds of the current chord under the temporal action from the main melody. This restriction can also be removed. In other words, a sub-melody can be composed of a harmony selected from chord constituent sounds and a non-chord selected from non-chord constituent sounds. In one configuration example for realizing this, each sound of the main melody is analyzed based on chord progression information and classification knowledge of non-harmonic sounds (for example, see Japanese Patent Application No. 62-325178 of the present applicant). Then, the type of each melody sound (harmonic sound type, non-harmonic sound type) is categorized. Among the classification results, the arrangement (the arpeggio pattern of the main melody) having the harmony sound type as an element is as described above. A conversion process is performed to give a temporal correlation and a pitch relationship between the main melody and the secondary melody, and this is used as an arpeggio pattern having a specific pitch in a relevant portion of the secondary melody. In order to generate non-harmonic information to be added to the sub-melody arpeggio pattern, the non-harmonic type arrangement of the main melody, which is the remainder of the classification result, is used. For example, among the types of non-harmonics on this arrangement, information on the type of non-harmonic between the main melody and the harmony can be inserted between the corresponding harmony on the sub-melody. It is used as a type of non-harmonic sound, and it is verified whether such a non-harmonic sound can be actually added according to the classification knowledge of non-harmonic sounds. This is done by checking), if it passes, the addition is performed, and if it fails, it is not added. In the case of this configuration, not only the harmony but also the non-harmony among the sounds constituting the main melody act on the secondary melody including the harmony and the non-harmony through the temporal element (in the embodiment shown in the figure, too). Some non-harmonics affect the secondary melody, but the effect is on the secondary melody.)

[Effects of the Invention] Finally, effects and advantages of the invention described in the claims will be described.

According to claim 8, according to the configuration described in the claim,
It is possible to generate pitch information of a second melody part such that given pitch information of the first melody part acts with a temporal correlation, and to generate real and natural polyphonic music in the first and second melody parts. Can be composed of parts.

Further, according to the seventh aspect, the second information that the given duration information of the first part operates through a plurality of temporal elements.
It is possible to generate the duration information of the part, and to compose natural polyphonic music in which the rhythm is correlated.

In the case of the configuration of the first aspect, a canon-like effect can be obtained in which the main melody plays the lead role and the pitch line of the sub melody that harmonizes the lead melody tracks the pitch line of the main melody.

In the fourth aspect, on the contrary, a canon-like effect can be obtained in which the sub melody plays the lead role and the pitch line of the main melody follows the pitch line of the sub melody.

According to the fifth aspect, since the pitch information at a plurality of times of the main melody acts on the pitch information of the sub melody, a more general interaction between the melody parts can be realized.

According to claim 3 which depends on claim 1, since the information of the main melody acts on the sub melody with a time delay not only in the pitch but also in the pitch, a more pure form of Canon effect can be obtained.

According to the ninth aspect, it is possible to automatically generate sub melody information based on the main melody and the chord progression in real time, and to output the performance of the sub melody along with the performance of the main melody. Therefore, polyphonic music can be easily enjoyed. Since the main melody has the same effect on the secondary melody as in claim 1, a canon-like performance effect on the pitch component can be obtained.

According to a tenth aspect of the present invention, in addition to the configuration of the ninth aspect, since the information of the main melody also acts on the secondary melody with a musical delay with respect to the duration, it is easy to enjoy polyphonic music having high regression or recursiveness between the melody parts. Can be.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of an electronic musical instrument having a real-time sub-melody generation function according to an embodiment of the present invention, FIG. 2 is a diagram showing a list of main variables used in the embodiment, and FIG. FIG. 4 is a diagram illustrating a chord configuration sound table, FIG. 5 is a flowchart showing the operation of a main routine of the embodiment, FIG. 6 is a flowchart showing the operation of a time interrupt routine of the embodiment, FIG. 7 is a flowchart of the chord processing, FIG. 8 is a flowchart of the sub melody processing, FIG. 9 is a flowchart of the melody processing, FIG. 10 is a flowchart of the sub melody sounding processing, and FIG. is there. 2 ... keyboard (main melody giving means and chord progression giving means) 4 ... CPU (part of sub melody generating means) 5 ... ROM
(Part of the sub melody generating means).

Continuation of the front page (56) References JP-A-2-173697 (JP, A) JP-A-56-123599 (JP, A) JP-A-64-33591 (JP, A) JP-A-59-116696 (JP) , A) Japanese Utility Model 3-5200 (JP, U) JP-B 63-42270 (JP, B2) JP-B 63-32197 (JP, B2) JP-B 63-25676 (JP, B2) 63-22314 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) G10H 1/18-1/30 G10H 1/36-1/42 G10H 1/00 101-102

Claims (10)

(57) [Claims] A main melody providing means for providing information on a main melody of the music; a chord progression providing means for providing information on chord progression of the music; a current chord information without using past chord information of the chord progression; And sub-melody generating means for generating at least one sub-melody of the music piece by determining current pitch information of the sub-melody based on the past melody pitch information of the main melody. Generating means for determining a chord constituent sound having a predetermined pitch relationship with the melody pitch information among the chord constituent sounds of the current chord information as the current pitch information; Sub-melody generator. 2. The secondary melody generating device according to claim 1,
The sub-melody generating device according to claim 1, wherein said determining means determines a chord constituent sound close to said melody pitch information among said chord constituent sounds of said current chord information as said current pitch information. 3. The secondary melody generating device according to claim 1,
The sub-melody generating device, characterized in that the sub-melody generating means has a means for generating a rhythm of the sub-melody by determining current pitch information of the sub-melody according to past melody pitch information of the main melody. . 4. A main melody providing means for providing information on a main melody of a music piece; a chord progression providing means for providing information on a chord progression of the music piece; current chord information of the chord progression and a future melody pitch of the main melody. A sub-melody generating means for generating at least one sub-melody of the music by determining the current pitch information of the sub-melody based on the information. 5. A main melody providing means for providing information on a main melody of a music, a chord progression providing means for providing information on a chord progression of the music, a current chord information of the chord progression and a plurality of different times of the main melody. A sub-melody generating means for generating at least one sub-melody of the musical piece by determining current pitch information of the sub-melody based on the melody pitch information. 6. The secondary melody generating apparatus according to claim 5,
The secondary melody generating means includes a note determined by a linear combination of the current chord information of the chord progression and the melody pitch information at a plurality of different time points having a predetermined time relationship with the current time in the melody pitch information of the main melody. A sub-melody generating device comprising means for determining current pitch information of the sub-melody based on high information. 7. A first method for adding information of a first part of a music piece
A rhythm of the second part is generated by determining the current duration information of the second part of the music based on a combination of the part providing means and the duration information of the first part at a plurality of different times. A music part generation device, comprising: second part rhythm generation means. 8. A first melody part assigning means for assigning information on a first melody part of a music, and information on progress of a pitch set usable in the second melody part of the music is given by a second melody part. A second melody part basic data providing means for providing as basic data, a currently available pitch set in the progress of the usable pitch set and a predetermined melody information in the information of the first melody part. Determining the current pitch information of the second melody part on the basis of future pitch information or pitch information at a plurality of time points having a predetermined time relationship with the present; Second to generate the information of
A melody part generating device, comprising: a melody part generating means. 9. A main melody performance input means for inputting performance information of a main melody of a music in real time; a main melody output means for outputting a tone of the main melody in response to the input performance information of the main melody; Main melody storage means for storing performance information of the song, chord progression input means for inputting the chord progression of the music in real time, current chord detection means for detecting the current chord in response to an input from the chord progression input means, Without using the past chord information, the performance information of the main melody detected by the current chord detection means and the performance information of the main melody stored in the main melody storage means is replaced by the performance information of a predetermined time from the present time. Determining, in real time, the current pitch information of the sub melody based on the included pitch information. A sub melody generating means including a deciding means for deciding a chord constituent sound having a predetermined pitch relationship with the pitch information as the current pitch information, and responding to performance information of the sub melody from the sub melody generating means. And a sub-melody output means for outputting a sub-melody tone. 10. The secondary melody generating device according to claim 9, wherein the secondary melody generating means includes a performance performed in the performance information of the main melody stored in the main melody storage means in the past for the predetermined time from the current time. A sub-melody generating apparatus, further comprising means for determining the current pitch information of the sub-melody in real time based on the pitch information included in the information.