JPH0863154A - Electronic musical instrument having localized movement feeling reproducing function - Google Patents

Abstract

PURPOSE: To enable the movement feeling of a localization in sounding to be changed by ranges and to enable obtaining natural localization feeling by controlling independently envelops of waveforms outputted left and right channels by rangs. CONSTITUTION: A readout address generator 101 determines addresses of corresponding waveform data to transmit them to a waveform 102 and then waveform data are outputted while being separated into left and right channels. Left and right envelop generators 103, 104 generate also corresponding envelop outputs according to information inputted in accordance with playing conditions. Waveform data and envelop data are respectively multiplied at every channel in multiplyers 105, 106. Moreover, a panning data generator 107 generates optimum panning data with respect to ranges at every left and right channel by receiving only range information. Then, panning data are multiplied with respect to output signals passed through multiplyers 105, 106 at every left and right channel. Since this output is a stereo signal, the natural locatilization feeling is obtained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument having a musical tone control device for performing a localized movement sensation reproducing function for performing localized movement of a musical tone being generated according to a musical range.

In recent years, a wide variety of electronic musical instruments adopting a stereo sound source system have become widespread and widely used.

[0003]

2. Description of the Related Art Generally, such an electronic musical instrument uses an electronic tone generator system and imparts various effects to a musical tone generated by the tone generator system to give a musical feeling or natural expression to an acoustic musical instrument. The goal is to realize power.

In a musical tone generating system that is widely used in electronic musical instruments, a waveform of a musical tone is stored in a read-only memory (hereinafter referred to as ROM), and a panel,
It is read out according to an address specified by a central processing unit (hereinafter referred to as CPU) according to selection / operation by a keyboard, D / A converted and amplified, and then output as an acoustic output.

Thus, even if the waveforms stored in the waveform ROM are sequentially read and a large number of waveforms having different timbres are read out as they are to produce a desired musical sound and are then sequentially output, the outputs from the left and right channels are flat. Therefore, the musical tone close to that of an acoustic instrument cannot be obtained.

FIG. 6 is a block diagram schematically showing the overall structure of an electronic musical instrument having the musical tone generating system as described above.

The electronic musical instrument shown here is a system bus 10.
A CPU 11, a ROM 12 for storing data required for performance such as a control program, a random access memory (hereinafter referred to as RAM) 13 for storing variable data, a keyboard 14, an operation panel 15, and a musical sound generator 16 are interconnected via Has been done.

The system bus 10 is composed of, for example, an address bus, a data bus, a control signal bus and the like, and exchanges signals between the connected elements. A speaker device 19 is connected to the musical sound generator 16 via a digital / analog converter (D / A) 17 and an amplifier 18.

The CPU 11 controls the entire electronic musical instrument in accordance with the control program stored in the ROM 12 and taking into account the contents stored in the RAM 13.

For example, the CPU 11 fetches a key ON or OFF signal from the keyboard 14 on the premise of the setting on the operation panel 15.

Then, in accordance with other data in this case, for example, tone color selection information, tone range information, etc., the key number and touch data of the key having the event are calculated, and the tone generation parameter is read from the ROM 12 based on these.

By sending these required data to the musical tone generating section 16, a process of generating a musical tone that matches a performance condition such as a predetermined tone color and pitch is performed.

The operation panel 15 connected to the CPU 11 functions as a part of various coefficient setting means and an input means for playing conditions.

In addition to this, MIDI (Musical Instr.) That functions as an interface for exchanging digital music data with other musical instruments or an external computer, etc.
ument Digital Interface).

The ROM 12 stores a control program for the CPU 11 and various fixed data required by the CPU 11. For example, pronunciation parameters for generating a tone of a predetermined tone color are stored.

This tone generation parameter is provided for each tone color and tone range, and includes, for example, waveform address, frequency data, envelope data, filter coefficient and the like.

The RAM 13 temporarily stores various data handled by the CPU 11, and includes definitions of various registers, counters, flags and the like for controlling the electronic musical instrument.

The musical tone generating section 16 is provided with a waveform memory (ROM) for storing the basic waveform of the musical tone to be generated, converts the waveform data corresponding to the musical tone to be generated into an electric signal, and obtains it through a predetermined filter. A tone is generated by performing pulse code modulation on the generated tone signal.

It is possible to continuously generate sound by looping the waveform data.

The tone generating section 16 receives the tone generation parameter and tone generation start command from the CPU 11, reads the waveform data stored in the waveform memory, adds an envelope to the waveform data, and generates a digital tone signal.

The output of the tone generator 16 passes through a digital / analog converter 17 and an amplifier 18 for each of the left and right channels (L, R) and a speaker device 19 as a reproducing device.
Leading to. In the meantime, the output of the musical sound generating unit 17 is converted to an analog signal, then amplified to a desired level, and output from the speaker device 19 as a stereo sound output.

Here, the stereoscopic sound localization will be described. If the outputs from the left and right speaker devices 19 are always constant irrespective of the musical range, the sensation differs from that of a musical sound produced by an acoustic musical instrument.

For example, a musical tone produced by a piano has different sounding / attenuating states in the high tone range and the low tone range, and thus the sensation from the left and right differs. Even in an electronic musical instrument, an unnatural tone will be produced unless sound is produced in consideration of such conditions.

In order to improve such unnaturalness, it is necessary to give a feeling of localization for each range. In order to give a sense of localization, a method is known in which panning data is provided for each range, or a sound source waveform is stereo-recorded by utilizing a stereo sampling technique, and a stereo is reproduced from a speaker based on this data.

FIG. 7 shows an example of a conventional configuration that produces a sense of localization by using panning data. The read address generator 21 receives a key on / off signal, tone color selection information, range information, touch information indicating a key pressing condition, and the like.

Based on each of these pieces of information, corresponding address information is given to the waveform memory 22 in accordance with, for example, a built-in conversion table. As a result, a corresponding waveform output is generated from the waveform memory 22.

Further, the information such as the key ON / OFF signal and the respective information such as the tone color selection information are also input to the envelope generator 23 to generate the corresponding envelope output. The waveform output from the above-mentioned waveform memory 22 and this envelope output are multiplied in the multiplier 24, and become the musical sound output corresponding to the left and right channels.

A panning data generator 25 is added in order to give a feeling of localization to such a musical sound output,
For example, as shown in FIG. 8, the left channel (L) output and the right channel (R) output are multiplied in the respective multipliers 26 and 27 by the panning data outputs A and B whose volumes change complementarily in accordance with the tone range.

As a result, the volume of the output musical tone is different between the left and right channels depending on the tone range, and a so-called localization feeling is obtained.

In this case, the input given to the panning data generator 25 is only the range information, and the feeling of localization during actual sounding is constant regardless of the range and cannot be changed in correspondence with the range. There was a flaw.

Further, in order to exert such a localization feeling, left and right waveform data stereo sampled by the microphones arranged on the left and right sides are stored in the respective waveform memories 33 and 34 as shown in FIG. A method has also been adopted in which this is taken out in accordance with the output of the read address generator 141 similar to that described above.

With respect to these outputs, the output of the envelope generator 143 similar to that described above is applied to each multiplier 35,
Multiply by 36.

When using such stereo recorded data, it is necessary to prepare waveform data recorded for a long time, and the data size becomes large accordingly, and a large-capacity waveform memory becomes indispensable. However, there is a drawback that the control accompanying this becomes complicated.

[0034]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and despite the small amount of data, it is possible to change the sense of localization movement during sound generation for each range. An object of the present invention is to provide an electronic musical instrument having a musical tone control device capable of obtaining a natural localization feeling in a musical instrument.

[0035]

SUMMARY OF THE INVENTION An object of the present invention is to generate a unique envelope data for each tone range, and to generate envelope data for each of the left and right channels, and execute a localization movement feeling reproducing function by the data. It is solved by an electronic musical instrument equipped with.

The localization movement sensation reproducing function in this case can be achieved by multiplying both the envelope data and the panning data. Furthermore, this localization movement sensation reproducing function can also be achieved based on the sound source waveform recorded by the stereo sampling technique.

[0037]

According to the musical tone control apparatus for an electronic musical instrument of the present invention, the volume balance of the left and right channels being sounded is temporally changed by independently controlling the envelopes of the waveforms output from the left and right channels for each range. be able to.

Therefore, the localization can be moved during sound generation for each tone range, and an electronic musical instrument having a natural localization feeling that an acoustic musical instrument has can be obtained and the initial purpose can be achieved.

[0039]

FIG. 1 is a block diagram showing a preferred embodiment of a main part of an electronic musical instrument having a localization movement sensation reproducing function according to the present invention, mainly in a musical tone generating section 16 of the electronic musical instrument shown in FIG. Included.

The circuit of the electronic musical instrument shown here includes a read address generator 101, a waveform memory 102, a left channel (L) envelope generator 103, and a right channel (R).
Envelope generator 104, panning data generator 1
And a multiplier 1 having a number 07 and further performing signal multiplication
It is composed of 05, 106, 108 and 109.

To the read address generator 101 and the left and right envelope generators 103 and 104, a key on / off signal, tone color selection information, touch information, and range information are applied as in the case of the prior art.

The read address generator 101 receives the above-mentioned signal, determines the address of the corresponding waveform data, and transmits it to the waveform memory 102.

The waveform data corresponding to the address is output from the waveform memory 102. The waveform data is output separately for the left channel (L) and the right channel (R).

The left and right envelope generators 103,
104 also generates a corresponding envelope output according to each information input according to the above-mentioned performance condition. The waveform data output and the envelope data output are respectively multiplied by multipliers 105 and 106 for each channel.

Further, the panning data generator 107
Receives only the range information and generates optimum panning data for each of the left and right channels for the range.

The panning data generated in this way is multiplied by the left and right channels with respect to the output signals that have previously passed through the multipliers 105 and 106.

The output of the tone generation section formed in such a circuit configuration is a stereo signal, which is a signal in which the envelope data and panning data of each channel are added to the waveform data output of each of the left and right channels.

Therefore, according to the intended purpose, by range,
It is possible to move the localization during pronunciation, and it is possible to obtain a natural localization feeling in an acoustic musical instrument.

FIG. 2 is a diagram for visually understanding how to hear sounds in an electronic musical instrument having a localization movement feeling reproducing function according to the present invention. Below, the keyboard is shown to indicate the musical range. The vertical direction represents time, and the two upward arrows indicate how to hear.

In the conventional electronic musical instrument, the sounds were heard as substantially straight arrows A and B, but by adopting the configuration according to the present invention, the curves A'and B'which fluctuate left and right.
You can hear it in different states depending on the difference in the range.

As a result, a more preferable electronic musical instrument can be obtained because it can be heard with a very natural feeling like an acoustic musical instrument.

FIG. 3 is a block diagram showing a second embodiment of the main part of the electronic musical instrument having the localization movement feeling reproducing function according to the present invention. The read address generator 111 and the waveform memory 112 have the same configurations as in FIG. The same applies to input signals and information.

However, in the configuration of FIG. 3, the panning data generator 113 and the left and right channel envelope generators 116 and 117 are connected in reverse order.

Therefore, the left and right waveform outputs fetched from the waveform memory 112 are first multiplied by the panning data and then by the left and right envelope data.

In the configuration of FIG. 3, the signal processing order for the waveform data output for each of the left and right channels is different, but as a result, the same output as that shown in FIG. 1 is obtained, and the intended purpose is achieved. .

FIG. 4 is a block diagram showing a third embodiment of the main part of an electronic musical instrument having a localization movement feeling reproducing function according to the present invention. The read address generator 121 and the waveform memory 122 have the same configurations as in FIG.

In this third embodiment, the panning data generator 113 connected in the previous case is not included. In this case, localization movement is achieved only by the outputs of the left and right channel envelope generators 124 and 125.

FIG. 5 is a block diagram showing a fourth embodiment of the main part of an electronic musical instrument having a localization movement feeling reproducing function according to the present invention. The read address generator 131 is the same as that of the third embodiment, except that the waveform memories are divided into left and right channels like 132 and 133, that is, stereo sampling data.

The envelope generators 134 and 135 and the multipliers 136 and 137 have the same configuration as that of FIG.

In the configuration of FIG. 5 as well, localization movement is achieved in the same manner as in the above-described configurations, and an electronic musical instrument with a built-in stereo sampling sound source including such a configuration provides a natural listening feeling similar to that of an acoustic musical instrument. .

[0061]

As described in detail above, according to the present invention,
The tone output of the left and right channels of an electronic musical instrument that incorporates both mono-sampling and stereo-sampling sound sources is controlled so that it sounds like an acoustic musical instrument.

That is, although the required data amount is small and therefore the configuration and control are simple, it is possible to give a feeling of localization so as to optimize the musical tone range, and a preferable electronic musical instrument can be obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a first embodiment of a musical sound control device in an electronic musical instrument according to the present invention.

FIG. 2 is an explanatory diagram showing a state of sound localization movement in the electronic musical instrument according to the present invention.

FIG. 3 is a block diagram showing the configuration of a second embodiment of a musical sound control device in an electronic musical instrument according to the present invention.

FIG. 4 is a block diagram showing a configuration of a third embodiment of a musical sound control device in an electronic musical instrument according to the present invention.

FIG. 5 is a block diagram showing the configuration of a fourth embodiment of a musical sound control device in an electronic musical instrument according to the present invention.

FIG. 6 is a block diagram showing an overall configuration of an electronic musical instrument according to the present invention.

FIG. 7 is a block diagram showing a configuration example of a musical sound control device according to a conventional technique.

FIG. 8 is an explanatory diagram showing a state of localization movement according to a conventional technique.

FIG. 9 is a block diagram showing another configuration example of the musical sound control device according to the prior art.

[Explanation of symbols]

 10 System Bus 11 Central Processing Unit (CPU) 12 ROM 13 RAM 14 Keyboard Section 15 Operation Panel Section 16 Musical Sound Generation Section 17 Digital / Analog Converter (D / A) 18 Amplifier 19 Speaker Device 101 Read Address Generator 102 Waveform Memory 103 Envelope generator 104 Envelope generator 105 Multiplier 106 Multiplier 107 Panning data generator 108 Multiplier 109 Multiplier

Claims (3)

[Claims] 1. An electronic musical instrument having a sound source for localizing a musical sound obtained by stereo sampling or mono sampling in each musical range, wherein envelope data unique to each musical range and envelope data for each left and right channel are generated. An electronic musical instrument is provided with a musical tone control device that executes a localization movement sensation reproducing function based on the data. 2. The electronic musical instrument according to claim 1, wherein the localization movement sensation reproducing function is achieved by adding both envelope data and panning data. 3. The electronic musical instrument according to claim 1, wherein the localization movement sensation reproducing function is achieved based on a sound source waveform recorded by a stereo sampling technique.