JP3455976B2 - Music generator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tone generator used in an electronic musical instrument, and more particularly to setting of parameters for each tone part.

[0002]

2. Description of the Related Art In recent years, electronic musical instruments capable of simultaneously producing a plurality of tones of a plurality of tones have been put into practical use. This is used when performing along with automatic accompaniment such as rhythm, bass, and accompaniment, or using a sequencer in which performance information is recorded beforehand, MIDI (Musical Instrument Digital Interface)
There are cases where multiple instrument sounds are played through. For example, an electronic organ has an upper keyboard (main melody and solo), a lower keyboard (accompaniment), a foot keyboard (bass), an automatic accompaniment (rhythm,
There are musical sound parts such as accompaniment). In the orchestra, keyboard instruments such as piano and organ, string instruments such as violin, viola and cello, woodwind instruments such as flute and clarinet, brass instruments such as trumpet and horn, timpani and triangle. There are many musical sound parts, such as percussion instruments.

A conventional musical tone generating apparatus will be described below. FIG. 6 shows a configuration of an electronic musical instrument using a conventional musical tone generating device. In FIG. 6, 50 is an operation panel, 51 is a microcomputer (hereinafter abbreviated as microcomputer), 52 is a keyboard, 53 is a pitch bend wheel, 54
Is an expression pedal, 55 is a sound system, 60 is a conventional tone generator, 61 is a time-division operation control unit, 62 is channel-specific parameter storage means, 63 is tone generation means, and 64 and 65 are DACs (digital / analog converters). ).

FIG. 7 shows the structure of the musical sound generating means 63. In FIG. 7, 71 is a waveform generator, and 72, 7
4, 76 and 77 are multipliers, 75 is an envelope generator,
Reference numeral 78 is an adder, and 79 and 80 are accumulators.

The operation of the electronic musical instrument using the conventional musical tone generating apparatus constructed as above will be described below. It should be noted that, in this conventional example, the time division operation is performed to
It is assumed that a total of 32 sounds of one musical sound part can be pronounced at the same time. Therefore, the number of sound generation channels is 32.

First, the operator on the operation panel 50
Tone, vibrato speed and depth, parts with pitch bend, and parts with expression are set. Further, the pitch change amount is controlled by the pitch bend wheel 53, and the volume is controlled by the initial touch (key strength or key pressing speed) on the keyboard 52 and the expression pedal 54. Information on these settings and controls is managed by the microcomputer 51 and sent to the musical tone generator 60.

The data sent from the microcomputer 51 to the tone generator 60 includes pitch data, tone color data, volume data, envelope data, and localization data, all of which are independent of 32 channels. These data are stored in the channel-by-channel parameter storage means 62 as shown in FIG. Further, these data are read out for each channel according to the time division control unit 61 and sent to the musical tone generating means 63.

The tone color data is data for selecting the type of instrument and the waveform, the envelope data is data for determining the shape and inclination of the envelope, and the localization data is data for determining localization between the left and right channels.

The pitch data is data calculated by the microcomputer 51 in correspondence with the pitch corresponding to the key depression, the vibrato and the pitch bend. That is, the pitch data corresponding to the pitch, the vibrato data calculated for each sound generation channel, and the pitch bend data corresponding to the pitch bend are added and sent to the musical tone generator 60 as pitch data. Since the vibrato data constantly changes continuously with time according to the vibrato period, the pitch data must be updated at a speed that cannot be detected by the sense of hearing. The same applies when the pitch bend wheel is being operated.

The volume data is calculated by the microcomputer 51 as a value corresponding to the initial touch by pressing a key and the operation of the expression pedal. That is, the initial volume data corresponding to the initial touch and the expression data corresponding to the operation of the expression pedal are added and sent to the musical sound generating device 60 as new volume data. Since the expression data continuously changes with time according to the operation of the expression pedal, it is necessary to update the volume data at a speed that cannot be detected by hearing.

Next, in the musical tone generating device 60, a musical tone is generated based on each of the above data. First, waveform data is output from the waveform generator 71 based on the pitch data and the tone color data. Further, the envelope generator 75 generates an envelope according to the envelope data. Next, in the multiplier 72, the waveform data and the volume data are multiplied, and in the multiplier 74, the envelope value is multiplied. Further, the multipliers 76, 77
And the adder 78 adds the localization between the left and right channels according to the localization data. Furthermore, the accumulator 79,8
At 0, 32 channels of musical sound data are accumulated for each of the left and right channels, converted into analog signals by the DACs 64 and 65, and then sounded by the sound system 55.

[0012]

However, in the above-mentioned conventional configuration, the control of each part such as vibrato and pitch bend is processed by the microcomputer for each sounding channel, so that the load on the microcomputer increases and the overall processing is increased. There was a problem that the speed became slow. If the overall processing speed of the microcomputer slows down, it takes too much time from key depression to actual pronunciation to delay the pronunciation, or the tempo of the auto accompaniment rhythm is disturbed, so that the instrument cannot be played well. Occurs. There is also a problem that the load on the microcomputer increases in proportion to the increase in the number of sound generation channels.

The present invention solves the above-mentioned problems of the prior art by reducing the load on the microcomputer for controlling the tone generator and reducing the load on the microcomputer even when the number of sounding channels is increased. The purpose is to provide.

[0014]

In order to achieve this object, a musical tone generating apparatus of the present invention comprises a part data storing means for storing part data for designating a musical tone part to which a sounding channel belongs, and a sounding channel for each sounding channel. Channel-by-channel parameter storage means for storing channel-by-channel parameters which are parameters for tone generation, and all channels belonging to the part for tone generation for each tone part of the part data stored in the part data storage means Parameter storage means for storing part-by-part parameters that are common parameters and whose values can be changed for each tone part by controlling the operation corresponding to each tone part; For each part read from the parameter storage means
Parameters stored in the part data storage means
And a tone calculation generating means for calculating volume data in accordance with the parameter for each part corresponding to the musical tone part specified by the selected part data and the parameter for each channel read from the parameter storing means for each channel. ing. Also, to achieve the above objectives
In order to achieve this, the musical tone generating apparatus of the present invention has parameters for each channel.
Includes initial touch volume data
Have a configuration. Also, in order to achieve the above purpose
The musical tone generator of the invention has exponential parameters for each part.
Has a configuration characterized by including
There is. In addition, in order to achieve this object, the musical sound of the present invention is generated.
The live device specifies the tone part to which the sound channel belongs.
Part data storing means for storing part data for storing
And parameters for generating musical tones for each sound channel
Channel-specific parameters that store certain channel-specific parameters
Parameter storage means and the part data storage means
To generate a tone for each tone part of the recorded part data
Parameters common to all channels belonging to that part
It is a meter and controls the operation corresponding to each musical sound part.
To change the value for each musical sound part
The parameter for each part, which is a parameter that can be
Parameter storage means for each part and the parameter for each part.
It is a parameter for each part read from the data storage means.
The part data stored in the part data storage means.
Parameter for each part corresponding to the musical sound part specified by the data
Data from the channel and the parameter storage means for each channel.
Depending on the channel-specific parameters that are found, the pitch data
With a musical tone calculation generating means for calculating
is doing. Further, in order to achieve the above-mentioned object, the invention of the present invention is easy.
The sound generator uses the pitch data for each channel parameter.
It has a configuration characterized by including. Also, the above eyes
In order to achieve the goal, the musical tone generating apparatus of the present invention is
Characterized in that the parameters include pitch bend data
Has a configuration. In addition, in order to achieve the above purpose
In the tone generator of the present invention, the parameter for each part is the vibra
It has a configuration characterized in that it includes the route data.

[0015]

With this configuration, the control for performing each tone part on the tone generator side is performed by all tone generators belonging to that part.
Parameters for each part instead of for each channel
Since it only has to be performed for one storage unit,
The load on the microcomputer for control can be reduced, and a smooth musical instrument performance can be realized.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the configuration of an electronic musical instrument using the musical tone generating apparatus of this embodiment. In FIG. 1, 10 is an operation panel, 11 is a microcomputer, 12 is a keyboard, 13 is a pitch bend wheel, 14 is an expression pedal,
Reference numeral 15 is a sound system, 20 is a tone generation device of the present embodiment, 21 is a time-division calculation control unit, 22 is a channel-based parameter storage unit, 23 is a tone generation unit, and 24 and 25 are D.
AC and 26 are part data storage means, and 27 is a part-specific parameter storage means.

FIG. 2 shows the configuration of the musical sound generating means 23. In FIG. 2, 30 and 38 are adders, 31 is a waveform generator, 32, 33, 34, 36 and 37 are multipliers, 3
Reference numeral 5 is an envelope generator, and 39 and 40 are accumulators.

The operation of the electronic musical instrument using the musical tone generating apparatus of this embodiment constructed as described above will be described below. Regarding the configuration other than the musical tone generating device, the conventional example and the present embodiment are the same. Also in the present embodiment, it is assumed that a total of 32 sounds of eight musical sound parts can be simultaneously pronounced by time-divisional calculation.

First, by the operation element on the operation panel 10,
Tone, vibrato speed and depth, pitch bend parts, and expression parts are set. The pitch bend wheel 13 controls the amount of change in pitch, and the initial touch (key pressing strength or key pressing speed) on the keyboard 12 and the expression pedal 14 control the volume. Information on these settings and controls is managed by the microcomputer 11 and sent to the musical tone generator 20.

There are three types of data sent from the microcomputer 11 to the musical tone generator 20. The first is data that serves as parameters for each sounding channel, and includes pitch data, tone color data, initial touch volume data (hereinafter referred to as touch volume data), envelope data, and localization data.
It consists of different types of data, each of which is independent of 32 channels. These data are stored in the channel-by-channel parameter storage means 22 as shown in FIG. Further, these data are read out for each tone generation channel according to the time division control section 21 and sent to the musical tone generating means 23. The tone color data is data for selecting the type and waveform of the musical instrument, the envelope data is data for determining the shape and inclination of the envelope, and the localization data is for determining localization between the left and right channels. The pitch data is data representing the pitch corresponding to the key depression, and does not change from the start of sounding to the end of sounding. The touch volume data is data representing an initial touch by pressing a key, and this also does not change from the start of sound generation to the end of sound generation.

The second is part data for designating a musical tone part for each channel, which is data independent of 32 channels and is stored in the part data storage means 26 as shown in FIG. The part data is the time division control unit 21.
In accordance with the above, it is read out for each tone generation channel and sent to the part-specific parameter storage means 27.

The third is data for each musical tone part, which is composed of three types of data, pitch bend data, vibrato data, and expression data.
The data is independent of the part. These data are
As shown in FIG. 5, it is stored in the part-specific parameter storage means 27. The data for each part is read according to the part data and sent to the musical sound generating means 23. The pitch bend data is data corresponding to the operation of the pitch bend wheel 13, and the expression data is data corresponding to the operation of the expression pedal 14. These three types of data are determined by the settings on the operation panel 10 to which musical tone part and to what extent, and the microcomputer 11 sets the data for each musical tone part. Since the effects of pitch bend, vibrato, and expression are determined for each musical tone part, it is not necessary to set for each sounding channel.

Next, in the musical tone generator 20, a musical tone is generated based on each of the above data.

First, the part data of the tone generation channel designated by the time division calculation control section 21 is read from the part data storage means 26. Next, the tone part parameters corresponding to the part data, that is, the pitch bend data, the vibrato data, and the expression data are read from the part-specific parameter storage means 27 and sent to the tone generation means 23. On the other hand, channel-specific parameters of the sound generation channel designated by the time-division calculation control unit 21, that is, pitch data, tone color data, touch volume data, envelope data, and localization data are read from the channel-specific parameter storage unit 22 and a musical tone is generated. It is sent to the generating means 23.

The pitch data, the pitch bend data, and the vibrato data are added by the adder 30 to obtain pitch data which is a combination of the pitch, pitch bend and vibrato on the keyboard. Waveform data is output from the waveform generator 31 based on the pitch data and the tone color data. Further, the envelope generator 75 generates an envelope according to the envelope data. Next, in the multiplier 32, the waveform data and the touch volume data are multiplied, in the multiplier 33, the expression data, and in the multiplier 34, the envelope value is multiplied. Furthermore, the localization between the left and right channels is added according to the localization data by the multipliers 36 and 37 and the adder 38. Further, in the accumulators 39 and 40, 32 channels of musical sound data are accumulated for each of the left and right channels, converted into analog signals by the DACs 24 and 25, and then sounded by the sound system 15.

By operating the pitch bend wheel 13,
The data that the microcomputer 11 needs to change with respect to the musical tone generating apparatus 20 is pitch bend data, which is one of the part-specific parameters. In the conventional example, the data (pitch data) had to be changed for all the tone generation channels to which the pitch bend was applied, but in the case of the present embodiment, the data only for the tone part to which the pitch bend is applied. (Pitch bend data) may be changed.

The data that the microcomputer 11 has to change with respect to the musical tone generating apparatus 20 by applying vibrato is vibrato data which is one of the part-specific parameters. In the conventional example, the data (pitch data) had to be changed for all the tone generation channels to which vibrato was applied, but in the case of the present embodiment, the data only for the tone part to which vibrato is applied. (Vibrato data) should be changed.

The data that the microcomputer 11 needs to change with respect to the musical tone generating apparatus 20 by operating the expression pedal 14 is the expression data which is one of the part-specific parameters. In the conventional example, the data (volume data) had to be changed for all the sound generation channels to which the expression effect was applied, but in the case of the present embodiment, it is necessary to change the tone part to which the expression effect is applied. Data (expression data) only needs to be changed.

As described above, according to this embodiment, the part data storage means for storing the part data, the channel parameter storage means for storing the channel parameters, and the part parameter storage means for storing the part parameters are provided. , By providing a part-specific parameter corresponding to the music part specified by the part data and a tone calculation generating means for calculating and generating a tone according to the channel-specific parameter, the parameter determined for each tone part is set to Since it can be set for each part, the control of the musical tone generator of the microcomputer is simplified and the load on the microcomputer is reduced, so the processing speed for controlling the entire musical instrument becomes faster and smooth instrument playing is possible. It can be carried out.

Even if the number of tone generation channels is increased from 32 to 64, if the number of musical tone parts remains 8, the control load for each tone generation channel increases as in the conventional example, but the data update Since the control load for each high-frequency musical tone part does not increase, it is possible to reduce the load on the microcomputer even when the number of sounding channels increases.

Although a plurality of multipliers, adders and storage means are provided in the present embodiment, it is needless to say that the same operation or function can be realized by a small number by time division operation or time division use.

Further, in the present embodiment, the parameters for each musical tone part are three parameters of pitch bend, vibrato, and expression, but needless to say, it is not necessary to limit to these three parameters if the data is determined for each musical tone part. .

[0034]

As described above, according to the present invention, the part data storage means for storing the part data for designating the musical tone part to which the tone generation channel belongs and the channel-specific parameter which is a parameter for the tone generation for each tone generation channel. a channel specific parameter storage means for storing, said
Part data storage unit for tone generation for each tone part of the stored part data are all channels common parameters belonging to that part, and tone-Pas
And a part-specific parameter storage means for storing a part-specific parameter that is a parameter whose value can be changed for each musical tone part by controlling the operation corresponding to each part, and is read from the part-specific parameter storage means.
The part-specific parameter, and the channel-specific parameter corresponding to the musical tone part specified by that part data
Which was a musical tone generating means for calculating generates tone according to the channel-specific parameters read from the storage means
Since the control for each part need not be performed for all the tone generation channels belonging to the part but for one part-specific parameter storage means, the control of the musical tone generator of the microcomputer can be simplified. Since the load on the microcomputer is reduced, the processing speed for controlling the entire musical instrument is increased, and it is possible to realize an excellent musical tone generating device capable of performing a smooth musical instrument performance.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electronic musical instrument using a musical sound generating device according to an embodiment of the present invention.

FIG. 2 is a block diagram of a musical tone generating means in an embodiment of the present invention.

FIG. 3 is an explanatory diagram of data stored in a parameter storage unit for each channel in the embodiment of the present invention.

FIG. 4 is an explanatory diagram of data stored in a part data storage unit in the embodiment of the present invention.

FIG. 5 is an explanatory diagram of data stored in a parameter storage unit for each part in the embodiment of the present invention.

FIG. 6 is a block diagram of an electronic musical instrument using a musical tone generating device in a conventional example.

FIG. 7 is a block diagram of a musical sound generating means in a conventional example.

FIG. 8 is an explanatory diagram of data stored in a parameter storage unit for each channel in a conventional example.

[Explanation of symbols]

20 Musical tone generator 21 Time Division Calculation Control Unit 22 Parameter storage means for each channel 23 Musical tone generating means 24 DAC 25 DAC 26 Part data storage means 27 Parameter storage means for each part

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) G10H 1/18 G10H 1/043 G10H 1/053

Claims (7)

(57) [Claims] 1. A part data storing means for storing part data for designating a musical tone part to which a sounding channel belongs, and a channel-by-channel parameter storing means for storing a channel-by-channel parameter which is a parameter for tone generation for each sounding channel. A parameter common to all channels belonging to the part for generating a tone for each tone part of the part data stored in the part data storage means, and controlling the operation corresponding to each tone part. and each part parameter memory means for storing the part-specific parameter is a parameter that can change the value to each tone part, par read from the part-specific parameter storage means
Parameters for each part and stored in the part data storage means.
A tone generation apparatus comprising: a part-specific parameter corresponding to a tone part specified by stored part data; and a tone generation unit that calculates and generates volume data according to a channel-specific parameter read from the channel-specific parameter storage unit. 2. The parameter for each channel is an initialization
The method according to claim 1, further comprising lutouch volume data.
The musical tone generator described. 3. The parameter for each part is an expression
3. The method according to claim 1, wherein the data includes application data.
Musical tone generator. 4. The tone part to which the pronunciation channel belongs is designated.
Part data storage to store part data for setting
Means and This is a parameter for generating musical tones for each pronunciation channel.
Parameter for each channel that stores the parameter for each channel
Data storage means, Of the part data stored in the part data storage means
Belonging to a musical tone part, to generate musical tones
It is a parameter common to all channels and
By controlling the operation corresponding to each sound part,
It is a parameter whose value can be changed for each
Parameter description for each part that stores the parameter for each part
Storage means, Par read from the part-specific parameter storage means
It is a parameter according to In the part data storage means
Corresponds to the musical tone part specified by the stored part data
Parameters for each part and the parameters for each channel
Parameter for each channel read from the data storage means
According to the
A musical tone generator equipped. 5. The parameter for each channel is pitch data.
5. The musical tone generating device according to claim 4, further comprising:
Place 6. The parameter for each part is pitch bend
The musical sound production according to claim 4, wherein the musical sound production includes data.
Raw equipment. 7. The parameter for each part is vibrato
5. The musical tone generation according to claim 4, further comprising
apparatus.