JP3437243B2 - Electronic musical instrument characteristic change processing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a musical tone characteristic change processing device for an electronic musical instrument, and more particularly to an electronic musical instrument capable of easily changing musical tone characteristics such as pitch and tone color of a musical tone during performance. Related to the musical tone characteristic change processing device.

[0002]

BACKGROUND OF THE INVENTION Generally, in an electronic musical instrument, when an instruction is given to change the characteristics of a musical tone, such as the pitch and tone color of a musical tone, by the operation of an operator during performance, The above characteristics are changed uniformly for all the musical sounds that can be generated by the electronic musical instrument.

For this reason, the strings are divided into seven groups, and the harp that can raise or lower the pitch of the strings belonging to the group by a semitone or the sound of a specific string for each group. It has been pointed out that it is difficult to simulate a steel guitar or the like, in which the height can be changed with a certain change width, by an electronic musical instrument.

That is, as described above, in the electronic musical instrument, when an instruction to change the characteristics such as pitch and tone color of a musical tone is given by the operation of the operating element during performance, it can be generated in the electronic musical instrument. This is because the characteristics of all musical tones are changed uniformly, but in harps and steel guitars, the pitch must be changed only for specific strings.

Therefore, it has been strongly demanded to devise a musical tone characteristic change processing device capable of changing only a characteristic (pitch, tone color, etc.) of a specific musical tone among musical tones which can be generated by an electronic musical instrument. It was

In the case of a natural musical instrument, only the pitch of a specific musical tone is subtly changed to perform a performance like a blue note, or the pitch of a specific musical tone within a harmony is subtly changed. As a result, it is possible to add a musical expression to a specific musical sound in the harmony. However,
As described above, in the electronic musical instrument, when an instruction to change the characteristics such as pitch and tone of the musical tone is given by the operation of the operating element during the performance, the characteristics of all the musical tones that can be generated in the electronic musical instrument. Since it will be changed uniformly, it was not possible to easily perform a performance like a blue note, or add a musical expression to a specific musical note in a harmony.

From this point of view, it is strongly desired to devise a musical tone characteristic change processing device capable of changing only the characteristic (pitch, tone color, etc.) of a specific musical tone among musical tones that can be generated by an electronic musical instrument. It had been.

The present invention has been made in view of the above-mentioned demands from the past, and an object of the present invention is to provide only a characteristic of a specific musical tone in a desired variation range among musical tones that can be generated in an electronic musical instrument. It is an object of the present invention to provide a musical tone characteristic change processing device for an electronic musical instrument, which can be changed by the method described above and can realize a new performance effect.

[0009]

In order to achieve the above object, a musical tone characteristic change processing apparatus for an electronic musical instrument according to the present invention comprises:
Variation range of musical tone characteristics such as pitch and tone color for each predetermined unit related to musical tone, such as each pronunciation instruction operator of the performance operating means operated by the operator to instruct the pronunciation of a musical tone or each pitch name This is done by paying attention to the fact that the characteristics of a specific musical tone can be changed with a desired variation width among the musical tones that can be generated by the electronic musical instrument by making the difference.
The performance operation means includes, for example, a keyboard, and each key constituting the keyboard serves as a sounding instruction operator, and thus this key serves as a predetermined unit for a musical sound.

That is, the musical tone characteristic change processing device for an electronic musical instrument according to the present invention has a musical tone generating means for generating musical tones of a plurality of pitches based on a sounding instruction, and a common and continuous tone generating means for the plurality of pitches. A change instruction data generating means for generating change instruction data whose value changes, and a change width of a characteristic of a musical tone changed based on the change instruction data generated by the change instruction data generating means are set for each note name. Generated by the tone generation means based on the change width set for each note name by the change width setting means in accordance with the change width setting means and the change instruction data generated by the change instruction data generating means. A musical tone characteristic changing means for changing the characteristic of a musical tone is provided. Further, the musical tone characteristic change processing device for an electronic musical instrument according to the present invention has a musical tone generating means for generating musical tones of a plurality of pitches based on a sounding instruction, and a common and continuous value change for the plurality of pitches. Depending on the change instruction data generated by the change instruction data generating means, the change instruction data generating means for generating the change instruction data, the change presence / absence setting means for setting whether or not to change for each note name, and the change instruction data generated by the change instruction data generating means. The musical tone characteristic changing means for changing the characteristic of the musical tone is provided only for the musical tones having the note names set by the change presence / absence setting means.

[0011]

In the musical tone characteristic change processing apparatus of the electronic musical instrument according to the present invention, the change instruction data generating means generates change instruction data whose value continuously changes in common for a plurality of pitches. The change width of the characteristic of the musical sound changed based on the data is set for each note name by the change width setting means. Then, the musical sound characteristic changing means changes the characteristic of the musical sound based on the change width set by the change width setting means in accordance with the change instruction data. Further, in the musical tone characteristic change processing device of the electronic musical instrument according to the present invention, the musical tone characteristic can be changed only for the musical tone having the note name set to be changed by the change presence / absence setting means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a musical tone characteristic change processing device for an electronic musical instrument according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram of an electronic musical instrument having a tone characteristic change processing device for an electronic musical instrument according to a first embodiment of the present invention.

This electronic musical instrument is constructed so that the control of the whole operation thereof is controlled by using a central processing unit (CPU) 10. The CPU 10 is controlled by the CPU 10 via a bus (BUS) 12. A read-only memory (RO) storing a predetermined program for controlling the operation of the computer and executing a process described later based on the flowchart shown in FIG. 2 and data necessary for executing the program.
M) 14, a random access memory (RAM) 16 as a working area necessary for the CPU 10 to execute the program, and a plurality of keys.
A keyboard section 18 for performing a performance operation by an operator pressing / releasing a desired key, and a pitch of a musical tone generated by this electronic musical instrument (if the pitch of the musical tone is changed, the pitch of the musical tone changes. Parameter setting operator group 2 including a bender operator 20 for continuously changing the parameter) and various operators for setting various parameters to be described later.
2, a display unit 24 for displaying the setting state of parameters by the parameter setting operator group 22, and "channel number 1" to "channel number N (" N "
Is a positive integer, for example, “16”. ) "Up to N tone signal generation channels and capable of simultaneously generating N tone signal generation units 26,
It is composed of an amplifier, a speaker, and the like, and is connected to a sound emitting unit 28 for emitting the tone signal generated by the tone signal generating unit 26 into space as a tone.

Here, when the keyboard section 18 detects the key depression / key release of each key, it indicates which of the key depression / key release is performed and which key is depressed / released. ,
The key information indicating the strength of key depression / key release is supplied to the CPU 10.

When the key information indicating the key depression is supplied from the keyboard section 18 to the CPU 10, the CPU 10 selects one of the tone signal generation channels of the tone signal generation section 26 and assigns the key information. When the generation start of the tone signal corresponding to the key depression is instructed and the key information indicating the key release is supplied from the keyboard section 18 to the CPU 10, the CPU 10
Instructs the tone signal generation channel that is generating a tone signal based on the previous key depression of the released key to stop the tone signal generation.

Further, in the present embodiment, only one bender operator 20 is provided, and by operating left and right or front and back around the initial state, the operation direction and operation amount can be changed. Accordingly, the pitch of the musical sound being sounded can be continuously changed according to the operation direction and the operation amount so that the pitch of the musical sound being sounded can be continuously raised or lowered. That is, the operation direction and the operation amount of the vendor operator 20 are stored in the CPU 1 as vendor data.
0, which is used as a parameter for changing the pitch of the musical tone signal being generated in each musical tone generating channel of the musical tone signal generating section 26, and thereby changes the pitch of the musical tone.

Further, by the operators that constitute the parameter setting operator group 22, each note name ("C", "C sharp", "D", "D sharp", "E", "F", "F").
There are 12 note names of "sharp", "G", "G sharp", "A", "A sharp" and "B".) Is the pitch changed by the bender operator 18 (bend on)? Whether or not to perform (bend off) can be designated, and the bend on or bend off designated by the parameter setting operator 22 is designated as bend on designation data or bend off designation data in the RAM 1
6 is stored in a predetermined area, and the designated state is displayed
Is displayed in.

Further, with respect to each note name for which bend-on is designated by the operators that constitute the parameter setting operator group 22, the bend sense (the bender operator 18 The pitch change width based on the operation can be arbitrarily set, and the degree of bend of the bender (bend sense) set by the parameter setting operator 22 is stored in the RAM 16 as bend sense data. Is stored in a predetermined area of, and the setting state is displayed on the display unit 24. This bend sense data is "1" in the initial state (when bend sense is not set).
Is set to.

The bend sense data is set to "0" to "12" in increments of "1" corresponding to a semitone. In the case of "1", the operation amount of the bender operator 20 is set. When the maximum is, the pitch changes by a semitone, and similarly, "1
In the case of "2", the pitch changes by 12 semitones, that is, by one octave.

As an operator for setting the bend / sense which constitutes the parameter setting operator group 22,
An operator is provided for individually setting the bend sense for each note name, and the bend sense can be arbitrarily set by operating this operator appropriately.

In the above-described structure, the electronic musical instrument has the keyboard portion 1 according to the routine based on the conventionally known technique.
The musical tone signal generation unit 2 according to the desired key depression / release of eight keys.
The musical tone signal is generated / stopped in the appropriate musical tone signal generating channels 6 and the musical tone is emitted into the space through the sound emitting section 28 to realize the performance.

It is to be noted that each tone signal generation channel of the tone generator 26 indicates whether the tone signal is being generated, or the tone signal generation is stopped, and which tone name the tone is being generated. The table is set in the RAM 16. Then, this table shows that when the tone signal generation is started by any one of the tone signal generation channels of the tone signal generation unit 26 in response to the key depression of the keyboard unit 18 (the tone sound corresponding to the key depression of the keyboard unit 18 is started. When the generation of the musical tone signal is allocated to the musical tone signal generating channel to generate the musical tone), and the generation of the musical tone signal in the musical tone signal generating channel of the musical tone signal generating unit 26 is finished, the contents are updated. .

As described above, in this electronic musical instrument, the parameter setting operator 22 is operated to specify bend-on or bend-off for each note name, and bend sense data for each note name. Can be set, and the bend processing routine shown in FIG.
It is executed every predetermined time as an interrupt routine of a routine based on the above-mentioned conventionally known technique.

That is, in the bend processing routine, in step S202, "1" is assigned to the processing variable [n], and preparations are made for subsequent processing from the tone signal generation channel of "channel number 1".

When the process of step S202 is completed, the process proceeds to step S204, and it is determined whether the tone signal generation channel of the channel number [n] is generating a tone signal.

If the determination result of step S204 is affirmative (Y), that is, if the tone signal generation channel is generating tone signals, the process proceeds to step S206, and the tone signal generation channel of channel number [n] is generating. It is determined whether or not the tone name of the tone signal of BEND ON is designated.

If the determination result in step S206 is affirmative, that is, if the tone name of the tone signal being generated in the tone signal generation channel of channel number [n] is bend-on designated, the process proceeds to step S208. The calculation of "bender data x bend sense data" is performed, and the calculation result is used as the change amount of the pitch of the musical tone being generated by the musical tone signal generation channel of the channel number [n]. To the tone signal generation channel of. As a result, the pitch of the musical tone being generated by the musical tone signal generation channel of channel number [n] is "bender data x bend sense data".
The pitch is changed by the pitch indicated by, and the pitch is changed based on the change in the pitch.

The "bend sense data" multiplied in step S208 is the bend sense corresponding to the tone name of the tone signal being generated in the tone signal generation channel of the channel number [n] to be processed. -It is data.

When the process of step S208 is completed, the process proceeds to step S210, and the process variable [n] is incremented by "1".

When the process of step S210 is completed, the process proceeds to step S212, and it is determined whether "n" is larger than "N".

If the result of the determination in step S212 is negative, that is, if "n" is less than or equal to "N", the processing up to "channel number N" has not been completed, so the process returns to step S204 and "n" is returned. = N ”, for the tone signal generation channel of channel number [n],
The processing of steps S204 to S212 is sequentially repeated.

Then, with respect to the "channel number N", the processing after step S204 is performed and step S2 is performed.
When “10” is reached, “n” is set to “N + 1” in step S210, and thus the determination result of step S212 is affirmative, that is, “n” becomes larger than “N”, and “channel number N” is already reached. It is determined that the processing has been completed, and this bend processing routine is ended.

If the determination result of step S204 is negative, that is, if the tone signal generation channel is not producing a tone signal, there is no tone to change the pitch by operating the bender operator 20, The process jumps to step S210 without performing the processes of step S206 and step S208.

Further, when the result of the determination in step S206 is negative, that is, when the tone name of the musical tone being generated in the tone signal generating channel of the channel number [n] is not bend-on designated (bend-off designated). If it is present), it is not necessary to change the pitch for the musical tone being generated by the musical tone signal generation channel of the channel number [n] by the operation of the bender operator 20. Jump to S210.

Therefore, in the bend processing routine,
Bend-on Only the pitch of the musical tone having the specified pitch name is changed from the reference pitch by the operation of the bender operator 20, and the change width is the bend amount set as the operation amount of the bender operator 20. Determined by the size of the sense.

Therefore, the bend-on is designated only for a specific note name and the bend sense is set to the initial state (bend sense = 1), and the bender operator 2 is set.
When the operation amount of 0 is maximized, it becomes possible to raise or lower the pitch of only a tone having a specific note name by a semitone according to the operating direction of the bender operator 20. That is, step S20
8, "Bend data (increase) x 1 (semitone) = semitone (increase semitone)" or "bend data (decrease) x 1 (semitone) = -semitone (decrease in semitone) in accordance with the operation direction of the vendor operator 20. ) ”Is performed, and it becomes possible to easily simulate a harp that raises or lowers a specific tone by a semitone.

By designating bend-on and setting bend-sense to an appropriate value, for example,
You will be able to simulate the open tuning performance of a steel guitar.

That is, as shown in FIG. 3, tuning of a steel guitar includes normal tuning and open D tuning. Comparing the two, open D tuning is lower by 2 semitones in the 6th string (E → D), lower in semitones in the 3rd string (G → F sharp), and in the 2nd string by 2 semitones than normal tuning. Low (B →
A), the first string is two semitones lower (E → D). There is no change between the fifth and fourth strings.

Therefore, first, "E", "G" and "B" are selected and set as the note names for the bend-on designation,
As the bend sense, "2" is set in "E", "1 (initial state)" is set in "G", and "2" is set in "B".

After the setting as described above, when the bender operator 20 is operated in the direction of lowering the pitch by the maximum amount to perform the performance, the processing of step S308 causes "Bend data (lower ) × 2 (semitone) = − 2 semitones (down by 2 semitones) ”and the pitch of“ G ”is“ bend data (down) × 1 (semitone) = − ”
The pitch is changed by "semitone (decrease semitone)", and for "B", "bend data (decrease) x 2 (semitone) =-"
The pitch is changed by 2 semitones (2 semitones lower). Therefore, “E → D”, “G → F sharp” and “B →
"A" and open D tuning can be realized.

Next, an electronic musical instrument equipped with a musical tone characteristic change processing device for an electronic musical instrument according to a second embodiment of the present invention will be described.

In the second embodiment, the bend on / bend off is designated for each note name in the first embodiment, whereas the bend on / bend off is designated. This is different from the first embodiment in that only the bend sense is designated for each note name without performing.

In the second embodiment, with respect to the note name for which the bend sense is set to "0", the pitch of the musical tone is not changed even if the bender operator 20 is operated, so the tone of the musical tone being sounded is generated. The height does not change.

FIG. 4 shows a bend processing routine of the second embodiment, which is different from the bend processing routine of the first embodiment shown in FIG. 2 only in that the processing of step S206 is not performed. Therefore, the processing content of each step is indicated by the same step number as in FIG. 1, and the detailed description thereof will be omitted.

The first and second embodiments described above may be modified as listed below.

(1) In addition to the bend sense for each note name, a bend sense common to all note names is provided, and a bend sense for each note name is provided.
It is also possible to combine the sense and the bend sense common to all note names to obtain the final bend sense for each note name.

Here, "comprehensive" means adding or multiplying each bend sense data.

(2) Rather than setting only one bend sense common to all note names, two or more bend senses common to all note names are provided, and which bend sense is used for each note name. May be specified. In this case,
It may be possible to set not to use any bend sense for each note name.

(3) In addition to the bend sense for each note name, a bend sense common to all note names is provided, and a bend sense for each note name is used for each note name, or a whole note is used. It is also possible to select and specify whether to use the bend sense common to the names.

Further, instead of providing a bend sense for each note name, only a bend sense common to all note names is provided, and bend on or bend off is selectively specified for each note name. May be.

(4) In each of the above-described embodiments, the case where only one bender operator 20 is provided has been described, but two or more bender operators may be provided. In this case, a bend sense may be set for each vendor operator, and which vendor operator may be used for each note name. For example, two vendor operators (vendor operator A
And Bender Operator B) are used, "Bender Operator A and Bender Operator B are used" for each note name.
Not use ”,“ use vendor control A ”,
It is possible to set "use vendor operator B" or "use vendor sense data of vendor operator A and vendor operator B collectively".

Here, "combined" means adding or multiplying each bend sense data.

When two or more bender operators are provided, the bend sense of each bender operator may be set for each note name.

(5) In each of the above embodiments, the bender operator is used to control the characteristic of the musical sound.
Instead of the bender operator, another operator such as a pedal may be used, and the key pressing force detected according to the key pressing of each key on the keyboard portion 18, so-called after-touch, may be used. You may

(6) In the above embodiment, the bender operator capable of sending a continuous operation amount was used, but the invention is not limited to this, and a push button switch type operator is used. , With a preset change width, the characteristics of the musical sound are changed smoothly over time according to the ON operation of the switch, and the characteristics changed according to the OFF operation of the switch are smoothly restored to their original values. Good.

The change time for smoothly changing the characteristic of the musical tone may be set for each key range of the keyboard section 18, and the change time may be set for the musical tone whose characteristic is changed. The control may be performed according to the strength of the key that has generated.

Further, when the characteristic of the musical sound is changed in response to the ON operation of the switch, it need not be changed smoothly. When the characteristic changed in response to the OFF operation of the switch is returned to the original, it is smooth. You don't have to go back to.

(7) The characteristic of the musical tone to be processed by the musical tone characteristic change processing device of the electronic musical instrument according to the present invention is not limited to the tone pitch, but may be timbre (filter cutoff frequency, etc.), volume, etc. Good.

(8) The keyboard section 18 or the vendor operator 20 may be connected via a communication means such as MIDI.

(9) In each of the above-described embodiments, the setting of bend-related data such as bend-on designation data, bend-off designation data, bend sense data, etc. can be set for each note name. The keys may be set for each key of the keyboard section 18.

When the data regarding the bend can be set for each key of the keyboard 18, different data can be set for the same note name but with different octaves.

Further, the keyboard section 18 may be divided into key areas, and bend-related data may be set for each key area.

Further, as shown in the modification (8), the keyboard section 18 or the bender operator 20 is replaced with MI.
When the connection is made via DI, bend-related data such as bend-on designation data or bend-off designation data or bend sense data may be set in correspondence with the note number.

(10) In each of the above-described embodiments, only one set of data regarding bend can be set for each note name. However, presets are made so that a plurality of sets can be set, and any desired preset is selected. You may

(11) The data regarding the bend may be included in the tone color parameters, and the data regarding the bend may be automatically set when the tone color is selected.

When a plurality of sets of bend-related data are preset, the tone color parameter may include information indicating which of the preset bend-related data is to be used.

(12) In the above embodiment, the characteristics of all the musical tones that are being sounded at the same time are changed by the operation of the bender operator 20, but at the same time, a specific musical tone (the highest tone, The characteristics may be changed only to the lowest note, the latest note (the most recently started musical note), the strongest note, etc.

(13) In each of the above-mentioned embodiments, the keyboard section 18 is taken up as the performance operation means for explanation.
The present invention is not limited to this, and may be a pitch designating switch in an electronic musical instrument that simulates a wind instrument.

(14) In each of the above-described embodiments, the bend-on or bend-off and bend-sense are independent of the operating direction of the bender operator 20 (the direction in which the pitch is changed to high or the pitch is changed to low). However, the bend on or bend off and the bend sense may be set independently for each operation direction of the bender operator 20.

Further, by applying such a configuration to the modification (3) described above, for example, a bend sense common to all pitch names is provided in addition to the bend sense for each pitch name, thereby increasing the pitch. A bend sense common to all pitch names may be used for the changing direction, and a bend sense set for each pitch name may be used for changing the pitch.

(15) The above-described embodiments and the modifications (1) to (14) may be combined as appropriate.

[0073]

Since the present invention is constructed as described above, it has the following effects.

The change instruction data generating means generates change instruction data whose value continuously changes in common for a plurality of pitches, and the change width of the characteristic of the musical tone changed based on the change instruction data is changed. , The tone width is set for each note name by the change width setting means, and the tone characteristic changing means changes the characteristic of the tone based on the change width set by the change width setting means in accordance with the change instruction data. Among the musical tones that can be generated by the means, only the characteristic of a specific musical tone can be changed with a desired change width, and a new performance effect can be provided. Further, it is possible to change the characteristic of the musical tone only for the musical tone having the note name set to be changed by the change presence / absence setting means.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electronic musical instrument including a musical tone characteristic change processing device for an electronic musical instrument according to a first embodiment of the present invention.

FIG. 2 is a flowchart of a bend processing routine according to the first embodiment of the present invention.

FIG. 3 is a note name for each string of tuning of a steel guitar (normal tuning and open D tuning), a note name and a bend sense designated as bend on in the first embodiment, and a second note. 5 is a chart showing a relationship with a bend sense in the example.

FIG. 4 is a flowchart of a bend processing routine according to a second embodiment of the present invention.

[Explanation of symbols]

10 CPU 12 buses 14 ROM 16 RAM 18 keyboard 20 Vendor operator 22 Parameter setting controls 24 Display 26 Music signal generator 28 Sound emitting part

─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-60-178493 (JP, A) JP-A-59-102291 (JP, A) JP-A-63-23197 (JP, A) JP-A-63- 137296 (JP, A) JP 50-51314 (JP, A) JP 62-186293 (JP, A) JP 2-135496 (JP, A) JP 5-249962 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G10H 1/00-7/12

Claims (2)

(57) [Claims] 1. Music tone generating means for generating musical tones of a plurality of pitches based on a pronunciation instruction, and change instruction data for generating change instruction data of which the value continuously changes in common for the plurality of pitches. Generating means, and a change width of the characteristic of the musical sound changed based on the change instruction data generated by the change instruction data generating means,
A change width setting means for setting each note name, and the musical tone based on the change width set for each note name by the change width setting means in accordance with the change instruction data generated by the change instruction data generating means. A musical tone characteristic change processing device for an electronic musical instrument, comprising: a musical tone characteristic changing means for changing a characteristic of a musical tone generated by the generating means. 2. Musical tone generating means for generating musical tones of a plurality of pitches based on a pronunciation instruction, and change instruction data for generating change instructional data whose values continuously change in common for the plurality of pitches. There is a change by the change presence / absence setting means according to the change instruction data generated by the change instruction data generating means A musical tone characteristic change processing device for an electronic musical instrument, comprising: a musical tone characteristic changing means for changing a musical tone characteristic only for a musical tone having a set note name.