JPH10187152A - Musical sound data converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the musical sound data converter in which even a beginner can readily execute an arrangement. SOLUTION: When a change code specifying means 5 specifies a present route, a change route and the conversion rule based on a prescribed function theory, a code name converting means 6 changes the code data, which are made of the routes and the code kinds, from the present route to the changed route, and changes the code having a prescribed function to the specified code based on the conversion rule. A pitch data conversion and reproducing means 7 pitch converts the pitch data corresponding to the route of the converted code data. Thus, the pitch of the pitch data are automatically converted so that the presently specified tune is changed to the tune to be changed or matches with the code to be changed. Therefore, the beginner simply performs the arrangement work for a change of key.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone data conversion device suitable for use in, for example, a code sequencer.

[0002]

2. Description of the Related Art There is conventionally known a chord sequencer for storing chord data including a root (root note) and a chord type (chord type) in a memory in the order of music progression, and sequentially reading the chord data to perform an automatic accompaniment.

In such a code sequencer, pattern data (for example, a chord backing pattern or a base pattern) for designating a pitch and a sounding timing of a chord sound or a base sound is stored in a memory in advance. Automatic accompaniment is achieved by converting the pitch so that the data matches the specified code.

[0004] Such pitch conversion is performed by a musical tone data conversion device. Specifically, of pattern data read out according to a designated tempo, a required tone corresponds to a chord type (chord type). , And then the pitch is shifted by an amount corresponding to the root (root note).

[0005]

In the above-described conventional tone data conversion apparatus, the pitch pattern of the fixed pattern data stored in advance is simply converted in accordance with the chord progression. There is a problem in that it is not possible to perform a transposition operation in which only the chords are pitch-converted and transposition or the like that changes the harmony in the middle of the music is performed. In addition, arrangement work cannot be performed unless the user is familiar with music knowledge, and a beginner can easily perform the arrangement work.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a musical sound data conversion apparatus which enables even a beginner to easily arrange music.

[0007]

In order to achieve the above object, according to the first aspect of the present invention, a change code designation for designating a conversion route based on a predetermined functional theory while designating a current route and a change route. Code conversion means for changing code data consisting of a route and a code type from a current route designated by the change code designation means to a change route, while converting a code having a predetermined function into a designated code based on a conversion mode. And pitch conversion means for changing the pitch data generated according to the pitch designation operation in accordance with the root of the code data converted by the code conversion means. .

According to the second aspect of the present invention, the code conversion means replaces the route of the code data with the predetermined route based on the current route.
Code conversion is performed on the basis of the conversion mode, and a changed route is added to a predetermined route to set a new route.

According to the third aspect of the present invention, the pitch converting means subtracts the pitch data by a change route, and the pitch data is subtracted by a code having a predetermined function. When the sound is a constituent sound, a floor name is determined, a pitch change amount corresponding to the determined floor name is added, and then the changed route is added again to convert to new pitch data.

In the present invention, when the change code designating means designates the current route and the changed route and designates a conversion mode based on a predetermined functional theory, the code converting means converts the code data consisting of the route and the code type into the current route. While changing from the route to the change route, a code having a predetermined function is converted into a specified code based on the conversion mode, and the pitch conversion means generates pitch data generated according to the pitch specifying operation.
Pitch conversion is performed in accordance with the root of the code data converted by the code conversion means. That is, the pitch of the pitch data is automatically converted so as to match the key to be changed or the code to be changed from the currently specified key. As a result, even a beginner can easily perform a transposition operation in which only the designated chord is pitch-converted in accordance with the harmony function theory, and transposition or the like that changes the harmony feeling in the middle of the music is performed.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A musical tone data converter according to the present invention comprises an electronic musical instrument or a computer having an automatic accompaniment device.
It can be applied to music devices and the like. Hereinafter, a tone data conversion device according to an embodiment of the present invention will be described as an example with reference to the drawings.

A. FIG. 1 is a block diagram showing a functional configuration of an electronic musical instrument to which a tone data converter according to an embodiment of the present invention is applied. In this figure, reference numeral 10 denotes a musical sound data conversion device, which comprises functional elements 1 to 7. Reference numeral 1 denotes pitch data input means, which is performance information generated in response to a pitch designation operation such as a keyboard operation, or MID input from an external musical instrument.
The I information is fetched in real time to generate sequence data (described later).

FIG. 2 is a diagram showing panel switches 1a to 1d provided in the pitch data input means 1. 1a is a clear switch for erasing stored sequence data, and 1b is a storage switch that is turned on when storing sequence data. When the storage switch 1b is turned on, a memory standby state is set, and the light emitting element LED blinks.
A reproduction switch 1c is operated when reproducing the stored sequence data. When the reproduction switch 1c is turned on during storage standby, the light emitting element LED is turned on to instruct storage of sequence data. Reference numeral 1d denotes a stop switch, which instructs to stop the operation when operated during storage or during reproduction.

The sequence data generated by the pitch data input means 1 is composed of note-on / off events, pitch data, and time data extracted from performance information or MIDI information. The pitch data corresponds to a key code (or note number), and an example is shown in FIG. The time data is represented by an absolute event time method representing the number of measures from the start of the performance. In the case of this embodiment, as shown in FIG. 4, data "96" corresponds to a quarter note length, and data "384". Corresponds to one bar length.

FIG. 5 is a diagram showing a data structure of sequence data. As shown in the figure, in the sequence data, a note-on event (90h (hexadecimal display)) representing a sounding event or a note-off event (80h) representing a mute event is arranged in the first byte B1. Pitch data is arranged in the second byte B2.
Byte B3 ~ 4th byte B4 contains less than 1 bar,
Time data in which the number of measures is defined is arranged after the fifth byte B5. Accordingly, the sequence data SD1 shown in FIG. 5 indicates that "it is pronounced at the pitch (87h) after the elapse of one measure quarter note length from the beginning".
The sequence data SD2 indicates that "the pitch (87h) is silenced after a lapse of a quarter note length of 16 measures from the beginning".

Next, returning to FIG. 1, the functional configuration of the embodiment will be described. In FIG. 1, reference numeral 2 denotes a pitch data storage unit composed of a RAM or the like, which sequentially stores sequence data generated by the above-mentioned pitch data input unit 1. A code name input unit 3 generates code data (described later) based on the input code name.
The code data generated by the code name input means 3 is stored in the code name storage means 4 at the next stage.

Here, the code input operators and operation switches provided in the code name input means 3 will be described. First, FIG. 6 is a diagram showing a code input dial operator. In this figure, reference numeral 3a denotes a route dial for designating a root (root tone) of an input chord. 3b is a code type selection dial for selecting a code type. Reference numeral 3c denotes a time designation dial for designating chord start time data indicating a point in time from the start of the music to chord sounding, and chord holding data indicating a sounding period.

To store and reproduce the "root", "code type", and "time (code start time data and code holding data)" of the code input by the dials 3a to 3c, a clear switch shown in FIG. 3d,
A storage switch 3e and a code reproduction switch 3f are used. The clear switch 3d instructs erasure of the input code already stored, and every time the storage switch 3e is turned on, the "root", "code type" and "time" set by the dials 3a to 3c at that time are set. (Code start time data and code holding data) ”. The code reproduction switch 3f instructs reproduction of the stored "root" and "code type".

The "root" and "code type" specified according to the operation of the dials 3a and 3b are shown in FIG.
Each of them is represented as 4-bit data based on the correspondence shown in (b). The chord start time data set by the time designation dial 3c is represented by variable length data having a sixteenth note length as a minimum unit, as shown in FIG. As shown in FIG. 2B, the chord holding data is represented by data having a fixed length of 1 byte and a holding time of 16th note length as a basic unit.

"Route" in such a data form,
The “code type” and the “time (code start time data and code holding data)” are code data CD representing a chord progression. As shown in FIG. 10, the code data CD is composed of at least 4-byte data C1 to C4, an identifier indicating that the first data C1 of the first byte is code data, and the data C of the second byte.
2 is a code name consisting of "root" and "code type",
The data C3 in the third byte is code holding data representing the time for holding the sound of the chord. The fourth byte data C4 is variable-length code start time data. Therefore, the code data CD1 illustrated in FIG.
After 3 beats from the start of the song, "Dm (D minor)"
The chord data CD2 indicates that four bars of "C (C major)" are to be pronounced two bars after the start of the music.

Next, the functional configuration of the embodiment will be described with reference to FIG. 1 again. In FIG. 1, reference numeral 5 denotes a change code designation means for designating a code and a conversion pattern to be changed among the chord progressions inputted by the code name input means 3 described above. The conversion pattern referred to here is, for example, a conversion form in accordance with the functional theory, such as converting a chord having the function of V7 (seven chords of the genus seven) to a code of the function of IIb7 (seven chords of the II degree). Point.

That is, the change code designating means 5
As shown in FIG. 1, a key (root) before change is selected by a root dial 5a, while a root dial 5b is selected.
The route after the change is selected by the operation described above, and a conversion mode based on a predetermined functional theory is designated by the pattern selection switch 5c. Thus, the specified key can be converted and designated into a chord using the sound of the musical scale.

The route and the conversion pattern designated by the change code designation means 5 are supplied to the code name conversion means 6 shown in FIG. The chord name conversion means 6 converts the necessary chord data from the chord data read from the chord name storage means 4 based on the route and the conversion pattern designated by the change chord designation means 5, and converts the chord data into the automatic accompaniment generator 30 and Output to the pitch data conversion / reproduction means 7.

The automatic accompaniment generator 30 generates chord sound and bass sound accompaniment data based on the chord data converted through the chord name conversion means 6, and supplies the accompaniment data to the musical tone control means 20. The pitch data conversion / reproduction means 7
The pitch data in the sequence data read from the pitch data storage unit 2 is converted based on the code data converted via the code name conversion unit 6 and supplied to the musical tone control unit 20.

The tone control means 20 instructs the generation of a melody sound in accordance with the pitch-converted sequence data, and the accompaniment sound (chord backing sound, bass) according to the accompaniment data supplied from the automatic accompaniment generator 30. Sound). Then, in the sound source 40, the tone control means 20
A melody sound and an accompaniment sound (chord backing sound, bass sound) are generated in accordance with the instruction, amplified by the sound system 50, and then emitted from the speaker 60.

It should be noted that the above-described tone data converter 10,
Each function of the musical tone control means 20 and the automatic accompaniment generator 30 is realized by a general-purpose microcomputer including a CPU, a ROM and a RAM and peripheral circuits thereof, or a microprogrammed DSP (digital signal processor). ) May be realized. In the following, the musical sound data conversion device 10
The operation in the case of being constituted by a general-purpose microcomputer composed of U, ROM and RAM and its peripheral circuits will be described.

B. Here, the operation of the tone data converter 10 includes “sequence data storage / reproduction instruction processing”, “sequence data storage processing”, “code data storage / reproduction instruction processing”,
The “code data conversion processing”, “sequence data reproduction processing”, and “pitch conversion processing” will be sequentially described.

Operation of Sequence Data Storage / Reproduction Instruction Processing Routine When the electronic musical instrument according to the present embodiment is in a power-on state, a sequence data storage / reproduction instruction processing routine shown in FIG. 12 is executed via a main routine (not shown). C
The PU advances the process to step SA1. First, in step SA1, it is determined whether or not the clear switch 1a in the pitch data input means 1 has been turned on. here,
When the user turns on the switch 1a to store the sequence data, the determination result is "YES", and the process proceeds to the next Step SA2. When the clear switch 1a is not turned on, the determination result is "NO", and the process proceeds to Step SA3 described later.

In step SA2, in the sequence data storage area provided in the RAM (pitch data storage means 2), the storage area for storing note data is reset to zero and cleared. Next, at Step SA3
Then, it is determined whether or not the memory switch 1b is turned on to be in a recording enabled state. Here, the switch 1b
Is turned on, the determination result is "YES", and the process proceeds to the next Step SA4. When the storage switch 1b is not turned on, the determination result is "NO", and the process proceeds to Step SA5 described later.

In step SA4, the light emitting element LED (see FIG. 2) disposed above the storage switch 1b is driven to blink so as to be in a storage (recording) standby state. Then, when proceeding to step SA5, the CPU determines whether or not the reproduction switch 1c has been turned on. Here, when the user performs the ON operation, the determination result is “YES”, and the process proceeds to the next Step SA6. On the other hand, when the reproduction switch 1c is not turned on, the determination result is “NO”,
This routine ends.

In step SA6, it is determined whether or not the LED is blinking, that is, whether or not the memory (recording) is in a standby state. In the memory (recording) standby state,
The result of the determination is "YES", the process proceeds to the next step SA7, the light emitting element LED is turned on, and a sequence data storage process described later is executed. On the other hand, when it is not in the storage (recording) standby state, the result of the determination in step SA6 is “N
O ", the process proceeds to Step SA8, and a sequence data reproducing process described later is executed.

In step SA9, it is determined whether or not the stop switch 1d has been turned on. When the switch 1d has been turned on, the process proceeds to the next step SA10 to turn off the light emitting element LED. It instructs to stop the processing being executed (sequence data storage processing or sequence data reproduction processing). As described above, in the sequence data storage / reproduction instruction processing, the storage or reproduction of the sequence data is instructed in accordance with the operation of each of the switches 1a to 1d shown in FIG.

Operation of Sequence Data Storage Processing Routine When the sequence data storage processing routine is executed according to the instruction of the sequence data storage and reproduction instruction processing routine (see step SA7), the CPU proceeds to FIG.
The process proceeds to step SB1 shown in (1) to turn on the light emitting element LED. Subsequently, in step SB2, the timer inside the CPU is cleared.

Next, in step SB3, the timer is incremented, and in subsequent step SB4, it is determined whether or not a key pressing operation has been performed. Here, if a key press event is detected, the determination result is “YES”, and the process proceeds to the next step SB5, where the sound generation event (90H), the pitch data of the key pressed, and the current timer Based on the value, sequence data including time data expressed in the absolute event time system is generated and stored in the RAM (pitch data storage means 2). When a key press is not detected in step SB4, the determination result is “NO”, and the process proceeds to step SB6 described later.

In step SB6, it is determined whether or not a key release operation has been performed. Here, if a key release event is detected, the determination result is “YES” and the next step SB7
To generate sequence data including a mute event (90H), pitch data of a released key, and time data expressed in an absolute event time format based on the current timer value, and generate a RAM. (Pitch data storage means 2)
To be stored. If no key release is detected in step SB6, the determination result is “NO”, and the flow advances to next step SB8.

In step SB8, the stop switch 1d
It is determined whether or not (see FIG. 2) has been turned on, and if it has been turned on, this routine is terminated. If not, the process returns to step SB3 and the sequence data is stored. As described above, in the sequence data storage processing routine, each time a key is released or pressed, a sounding / muting event, pitch data of a key that has been pressed and released, and
Sequence data consisting of time data expressed in the absolute event time system is sequentially generated based on the current timer value and stored in the RAM (pitch data storage means 2).

Operation of Code Data Storage / Reproduction Instruction Processing Routine Next, the code data storage / reproduction instruction processing routine executed in response to the operation of the code input dial operator (see FIG. 6) and the operation switch (see FIG. 7) will be described. I do.
Similarly to the above-described sequence data storage / playback instruction processing routine, when the electronic musical instrument according to the present embodiment is in the power-on state, the code data storage / playback processing routine shown in FIG.
The PU advances the process to Step SC1.

At step SC1, the clear switch 3d
(See FIG. 7) is determined. Here, when the user turns on the switch 3d to store the code data, the determination result is "YES", and the process proceeds to the next Step SC2. When the clear switch 3d is not turned on, the determination result is "NO", and the process proceeds to Step SC3 described later.

In step SC2, the code data storage area provided in the RAM (code name storage means 4) is reset to zero to clear it. Next, in step SC3, it is determined whether or not the storage switch 3e has been turned on. Here, if the switch 3e is turned on, the determination result is “YES”, and the next step SC
Processing proceeds to 4. On the other hand, when the storage switch 3e is not turned on, the determination result is “NO”, and the process proceeds to Step SC5 described later.

In step SC4, dials 3a to 3c
(See Figure 6) the "root" of the code,
It instructs to store "code type" and "time (code start time data and code holding data)" in a code data storage area provided in a RAM (code name storage means 4). And the above dials 3a-3c
When the process proceeds to step SC5 in a state where code data is sequentially set and input by the operation and a predetermined chord progression is formed, the CPU determines whether or not the chord reproduction switch 3f is turned on.

Here, when the switch 3f is turned on, the determination result is "YES", and the next step SC
The process proceeds to 6. On the other hand, when the ON operation is not performed, the determination result is “NO”, and this routine ends. In step SC6, a code conversion process (described later) for converting the code data set and input based on the route and the conversion pattern specified by the change code specifying means 5 described above is executed, and thereafter, this routine ends.

Operation of Code Conversion Processing Routine When the code reproduction switch 3f is turned on in the code data storage / reproduction instruction processing routine, this routine is executed via the above-described step SC6, and the processing proceeds to step SD1 shown in FIG. Advance. In step SD1, the timer inside the CPU is reset to zero and cleared,
In a succeeding step SD2, it is determined whether or not all the code data has been read from the RAM (code name storage means 4).

Here, when the reading of the code data is completed, the judgment result is "YES" and this routine is terminated. However, when the reading is not completed, the judgment result is "NO" and the next step The process proceeds to SD3, and code data is fetched from the RAM (code name storage means 4). In step SD4, it is determined whether or not the chord start time data in the fetched chord data coincides with the timer value, that is, whether or not the sounding timing has come.

If the sounding timing has not been reached,
The result of this determination is "NO", and a step SD5
The process proceeds to (see FIG. 16). In step SD5,
It is checked whether or not a code buffer for temporarily storing the read code data is free. In this case, since the code data before code conversion is already stored, the determination result is “NO”. And step SD6
Proceed to. In step SD6, the timer value is incremented and the timer is advanced. In step SD7, it is determined whether a stop switch (not shown) has been turned on. If the switch is not turned on, the determination result is “NO”, and the process returns to step SD4 (see FIG. 15) again.

At this step SD4, when it is time to generate the chord data, the judgment result is "Y".
ES ”, and the process proceeds to the next Step SD8. In step SD8, the root value before change set by the route dial 5a is set to the shift amount Δ, and in the following step SD9, the shift amount Δ is subtracted from the root value in the fetched code data. As a result, FIG.
In the case of the setting shown in FIG. 7, the current root value converted into “C major (C major)” is calculated.

Next, in steps SD10 to SD13, it is determined which one of the pattern selection switches 5c-1 to 5c-4 has been turned on, and processing is performed in any of steps SD14 to SD17 according to the type of switch to be turned on. Advance. Here, for example, when the switch 5c-1 is turned on, the determination result of step SD10 becomes "YES", and the process proceeds to step SD14. In this case, the code having the function of V7 (generic seven chords) is represented by IIb7.
(The seventh chord of the second degree). Specifically, as in the example shown in FIG. 17, when the designated key is C major, “G7 (G major dominant seven chord)” is changed to “Db7 (Db major dominant seven chord). ) ".

When code conversion is performed on the designated key in accordance with the designated conversion pattern, the CPU proceeds to step SD18 (see FIG. 16) to change the current route value indicated by the route dial 5b. The new route value is calculated by adding the subsequent route values.

Next, in step SD19, the calculated new route value is used as a fixed code as the automatic accompaniment device 3
While transmitting to the 0 side, the code buffer is cleared. When the code buffer becomes empty, the result of the determination made in step SD5 becomes "YES", and the process proceeds to step SD2.
The process proceeds to 0, and the next code data is fetched from the RAM (code name storage means 4). Next, in step SD7, if the stop switch is not turned on, the process returns to step SD4 to perform code conversion again.
On the other hand, when the stop switch is turned on, this routine ends.

As described above, in the code conversion processing routine, the current root value is calculated by subtracting the root value before change set by the root dial 5a from the root value in the read code data, and this is designated. Code conversion is performed based on the conversion pattern, and a new route value is calculated by adding the changed route value indicated by the route dial 5b to the current route value obtained as a result.

Operation of Sequence Data Reproduction Processing Routine Next, the operation of the sequence data reproduction processing routine will be described. When the execution of this routine is instructed through step SA8 of the above-described sequence data storage / reproduction instruction processing routine (see FIG. 12), the CPU proceeds to step SE1 in FIG. First, in step SE1, the timer is reset, and in subsequent step SE2, R
The sequence data read from the AM (pitch data storage means 2) is set in the event buffer 0. Then
In step SE3, it is determined whether or not all the sequence data has been read from the RAM (pitch data storage means 2).

Here, when the reading of the sequence data is completed, the judgment result is "YES", and this routine is terminated, but when not, the judgment result is "N".
O ", and the process proceeds to the next Step SE4. In step SE4, it is determined whether or not the time data (event time) in the fetched sequence data matches the timer value.

If the event time has not been reached, the result of the determination in step SE4 is "NO", and the process proceeds to step SE5 shown in FIG. In step SE5, it is determined whether or not the event buffer 0 is empty. In this case, since unreproduced sequence data has been stored, the determination result is "NO", and the flow proceeds to step SE6. In step SE6, the timer value is incremented and the timer is advanced. In subsequent step SE7, it is determined whether or not the stop switch 1d (see FIG. 2) is turned on. When the switch 1d is not turned on,
The determination result is “NO”, and the above-described step SE4
(See FIG. 18).

If the timer value matches the event time in step SE4, the judgment result is "YE
S ", and proceeds to the next step SE8. In step SE8, it is determined whether or not the event in the sequence data is a sound generation event. If it is a sounding event, the determination result is "YES", and the flow advances to step SE9 to execute a pitch conversion process described later. This pitch conversion processing is for converting the pitch data in the sequence data corresponding to the code data converted through the code name conversion means 6, and the details will be described later.

Next, at step SE10, the pitch data before the pitch conversion and the pitch data after the conversion are paired and stored in the tone generation buffer areas 1 to 32. Here, the reason why the electronic musical instrument according to the present embodiment has the number of simultaneous sounding channels for a maximum of 32 sounds is stored in the sounding buffer areas 1 to 32. In step SE11, the pitch data after conversion held in the tone generation buffer areas 1 to 32 is sent to the tone generator 40 to perform tone generation processing for giving a tone generation instruction, and the event buffer 0 is cleared.

On the other hand, in the case of the mute event, the result of the determination in step SE8 is "NO", the process proceeds to step SE12 shown in FIG. 19, and the result of this determination is "YES" to go to step SE13. move on. In step SE13, the pitch data before conversion, which is stored in the sound generation buffer areas 1 to 32, is searched for a pitch having the same pitch as the pitch data before conversion under the mute event. The sound pitching instruction is given for the converted pitch data. Subsequently, in step SE14, the buffer area corresponding to the mute instruction is cleared, while the event buffer 0 is also cleared.

Thereafter, the process proceeds to step SE5 to determine whether or not the event buffer 0 is empty. In this case, since the event buffer 0 has been cleared in step SE14, the determination result here is "YES", and step SE15 is performed.
Processing proceeds to Next, in step SE15, the next sequence data is fetched into the event buffer 0. If the stop switch 1d is in the off state, the result of the determination in step SE7 is "NO", and the process returns to step SE4 (see FIG. 18) to reproduce the sequence data again.

Operation of Pitch Conversion Processing Routine When this routine is executed through step SE9 of the above-described sequence data reproduction processing routine, the CPU advances the processing to step SF1 shown in FIG. Step S
In F1, it is determined whether or not the capture of the pitch data has been completed. If all pitch data have been fetched, the result of this determination is "YES", and this routine is terminated; otherwise, the result of determination is "NO", and the process proceeds to the next step SF2. Proceed.

At step SF2, pitch data is extracted from the currently read sequence data. Then
In step SF3, the CPU subtracts the value of the root before the chord change from the extracted pitch data, converts the value into pitch data in "C key (C major)", and sets this as current pitch data. I do. Next, in steps SF4 to SF7, the pattern selection switches 5c-1 to 5c-4 (FIG.
It is determined which of the switches has been turned on, and steps SF8 to SF8 are performed in accordance with the type of switch that has been turned on.
The process proceeds to any one of No. 11.

Here, for example, the pattern selection switch 5
When c-1 is turned on, the result of determination in step SF4 is "YES", and the flow proceeds to step SF11. In step SF11, it is determined whether or not the code has the function of V7 (dominant). When the code does not have the function of V7 (dominant), the determination result is “NO”, and the process proceeds to Step SF15 described later. On the other hand, when the code corresponds to V7, the determination result is “YES”, and the next step SF12 Processing proceeds to

In step SF12, the floor name calculation processing routine shown in FIG. 21 is executed to obtain the floor name of the pitch data. That is, the process proceeds to step SG1 shown in FIG. 21, and divides the current pitch data by “12” and leaves the remainder (1
The floor name before the change is calculated from the remainder value of 2). Then, in step SG2, the route value before the change is subtracted from the obtained floor name, and this is set as the current floor name after the change.

Thereafter, the process proceeds to step SF13 shown in FIG. 20, and the pitch conversion table shown in FIG.
A corresponding pitch shift amount is obtained based on the floor name before and after the change obtained in the above-described floor name calculation processing routine. Next, in step SF14, the obtained pitch shift amount is added to the current pitch data. Then, in step SF15,
Add the changed root value to this current pitch data,
Generate new pitch data.

As described above, in the present embodiment, the current root value is calculated by subtracting the root value before the change from the root value in the read code data, and the current root value is calculated based on the conversion pattern of the specified functional theory. The new root value is calculated by adding the changed root value to the current root value obtained by the conversion, and the pitch data in the sequence data corresponding to the code data thus converted is calculated. Since pitch conversion is performed, only a designated chord can be pitch-converted in accordance with the harmony function theory, and even a beginner can easily perform a transposition or the like in which transposition or the like that changes a harmony mood in the middle of music is performed.

[0063]

According to the present invention, the pitch of the pitch data is automatically converted so as to match the key to be changed or the code to be changed from the currently specified key, so that it is in accordance with the harmony function theory. Even a beginner can easily perform a transposition operation in which only the designated chord is pitch-converted and a transposition that changes the harmony during the music is performed. can do.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a functional configuration of an embodiment according to the present invention.

FIG. 2 is a diagram showing panel switches 1a to 1d provided in a pitch data input unit 1;

FIG. 3 is a diagram showing an example of pitch data forming sequence data.

FIG. 4 is a diagram showing an example of time data forming sequence data.

FIG. 5 is a diagram for explaining a data structure of sequence data.

FIG. 6 is a diagram for explaining a code input operator included in the code name input means 3;

FIG. 7 is a diagram for explaining operation switches 3d to 3f provided in the code name input means 3;

FIG. 8 is a diagram for explaining a route forming code data and a data format of a code type.

FIG. 9 is a diagram illustrating the data format of code start time data and code holding data forming code data.

FIG. 10 is a diagram illustrating a data structure of code data.

FIG. 11 is a diagram showing a route dial 5a, a route dial 5b, and a pattern selection switch 5c included in a change code specifying unit 5.

FIG. 12 is a flowchart showing an operation of a sequence data storage / reproduction instruction processing routine.

FIG. 13 is a flowchart showing an operation of a sequence data storage processing routine.

FIG. 14 is a flowchart showing the operation of a code data storage / reproduction instruction processing routine.

FIG. 15 is a flowchart showing an operation of a code conversion processing routine.

FIG. 16 is a flowchart showing an operation of a code conversion processing routine.

FIG. 17 is a diagram for explaining the conversion contents of code conversion 1;

FIG. 18 is a flowchart showing an operation of a sequence data reproduction processing routine.

FIG. 19 is a flowchart showing an operation of a sequence data reproduction processing routine.

FIG. 20 is a flowchart showing the operation of a pitch conversion processing routine.

FIG. 21 is a flowchart illustrating an operation of a floor name calculation process.

FIG. 22 is a diagram illustrating an example of a pitch conversion table.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 pitch data input means 2 pitch data storage means 3 code name input means 4 code name storage means 5 change code designation means (change code designation means) 6 code name conversion means (code conversion means) 7 pitch data conversion reproduction means (Pitch conversion means)

Claims (3)

[Claims] 1. A change code designating means for designating a current route and a change route and designating a conversion mode based on a predetermined functional theory, and code data comprising a route and a code type are designated by the change code designating means. Code conversion means for converting a code having a predetermined function based on a conversion mode into a designated code while changing the current route to a changed route, and converting the pitch data generated in accordance with a pitch designation operation into the code conversion. And a pitch conversion means for changing a pitch in accordance with a route of the code data converted by the means. 2. The method according to claim 1, wherein the code conversion unit replaces a route of the code data with a predetermined route based on a current route.
2. The musical tone data conversion device according to claim 1, wherein code conversion is performed based on the conversion mode, and further a changed route is added to a predetermined route to set a new route. 3. The pitch conversion means subtracts the pitch data by a change route, and when the pitch data is a constituent sound of a chord having a predetermined function, determines a floor name, and according to the determined floor name. 2. The musical tone data conversion device according to claim 1, wherein the pitch change is added, and then the changed route is added again to convert to new pitch data.