JPH0635453A - Electronic keyboard musical instrument - Google Patents

Abstract

PURPOSE:To provide the electronic keyboard musical instrument which can be played on with a richer variation by generating a difference in sound image localization between a dummy sound generated by keying with a pedal stepped and a dummy sound generated by keying without stepping the pedal. CONSTITUTION:The electronic keyboard musical instrument 1 which has the pedal 3 for giving variations to sounds has a detecting means 2 which detects the ON/OFF state of the pedal 3, a regenerating means 5 which has plural sound generation channels for outputting dummy sounds, and a sound volume determining means 2 which determines the sound volume of the dummy sounds outputted to the respective sound generation channels according to the ON/OFF state of the pedal 3 detected by the detecting means 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic keyboard musical instrument such as a synthesizer, an electronic piano, an electronic organ or a single keyboard, to which an acoustic effect can be added.
More specifically, the present invention relates to an electronic keyboard instrument that moves the sound image localization of the pseudo sound when the damper pedal is depressed.

[0002]

2. Description of the Related Art A conventional electronic keyboard instrument, for example, an electronic piano, is known to have a damper pedal for changing a pseudo sound to be produced. In such an electronic piano, the damper pedal is used. The lingering time of the sound when the key is released differs between when the key is pressed while stepping on it and when the key is pressed without stepping on the damper pedal.

[0003]

However, such a conventional electronic keyboard instrument has the following problems.
In other words, there is no difference in the tone color of the pseudo sound produced by the electronic piano when the damper pedal is pressed and when the damper pedal is not pressed, only the afterglow time of the pseudo sound changes. could not.

The present invention has been made in view of the above problems, and the sound image localization of the pseudo sound generated between when the pedal is depressed and the key is depressed and when the pedal is depressed without the pedal is depressed. It is an object of the present invention to provide an electronic keyboard musical instrument that can perform a variety of performances by making different sounds.

[0005]

[Means for Solving the Problems] In order to achieve the above object,
The electronic keyboard instrument according to the present invention has a detecting means for detecting the ON / OFF state of the pedal, a reproducing means having a plurality of sound generation channels for outputting a pseudo sound, and an ON / OFF state of the pedal detected by the detecting means. Accordingly, a sound volume determining unit that determines the sound volume of the pseudo sound output to each of the plurality of sound generation channels is provided.

In this case, the volume determining means further comprises a determining means for determining the key number of the depressed key, and the volume determining means determines the ON / OFF state of the pedal detected by the detecting means and the key number determined by the determining means. It is preferable to determine the volume according to

[0007]

According to the above-mentioned electronic keyboard instrument, the detecting means detects the ON / OFF state of the pedal, and the volume determining means outputs the pseudo to the reproducing means having a plurality of sound generation channels according to the detection result. Determines the sound volume. Therefore,
Since the volume relationship of each sound output channel output from the electronic keyboard instrument is different when the pedal is depressed and when it is not depressed, the performance can be changed by changing the sound image localization.

According to another aspect of the electronic keyboard instrument of the present invention, the discriminating means discriminates the key number of the depressed key, and the sound volume deciding means produces a plurality of sounds according to the discriminated key number. Since the volume of the pseudo sound output to the reproducing means having a channel is determined, not only the ON / OFF state of the pedal but also the sound image localization depending on the pressed key can further change the performance. it can.

[0009]

The preferred embodiments of the present invention will be described below in detail with reference to the drawings. First, the configuration of the electronic keyboard instrument according to the present invention will be schematically described with reference to FIG. The electronic keyboard instrument 1 is composed of a control circuit (including both detection means, volume determination means and determination means) 2, a damper pedal 3, a keyboard 4 and a reproduction section (reproduction means) 5. Then, in this electronic keyboard instrument 1, when the keyboard 4 is pressed, a pseudo sound composed of two channels corresponding to the pressed key is generated.
It is generated by the control circuit 2. This dummy sound is converted from a digital signal into an analog signal by the control circuit 2, amplified by the reproducing unit 5, and then output from the left and right speakers. In this case, the control circuit 2 controls the O of the damper pedal 3
The N / OFF state is detected and, according to the result, the reproducing unit 5
Determine the volume of the pseudo sound of the left and right channels output to. Therefore, the sound image localization of the sound output from the left and right speakers is different when the damper pedal 3 is depressed and when it is not depressed.

Next, the structure of the electronic keyboard instrument 1 will be described in detail. The control circuit 2 is internally provided with an external device (not shown) and a MIDI (Musical Instrument Digital Interface).
face) MIDI section 6 for transmitting and receiving signals, CPU 7, control program, ROM 8 for storing various sound effect setting data such as a panpot data table described later, and MI
From the RAM 9, which temporarily stores the DI signal, the data of the operating state of the control circuit 2, etc., the keyboard scan circuit 10, which detects the key depression state of the keyboard, the tone generator LSI 11, which generates a dummy sound under the control of the CPU 7, It has two D / A units 12 and 13, a bus line 14 and a panel 15 for converting the output pseudo sound of the left and right channels from a digital signal to an analog signal. Here, the MIDI unit 6 is for mutually coupling the electronic keyboard instrument 1 with other electronic instruments and computers, and detects note ON / OFF, pedal information such as the damper pedal 3, and disconnection of various electric wires. Transmits and receives MIDI signals for active sensing and the like.

Further, the CPU 7 controls the electronic keyboard instrument 1, and is a tone generator LSI for controlling the entire electronic keyboard instrument 1 and generating a pseudo sound corresponding to a depressed key.
11, control of ON / OFF of the damper pedal 3, control of sound image localization of a pseudo sound based on the detected ON signal, communication control with an external device (not shown), monitoring of key depression state of the keyboard 4 and the like.

The damper pedal 3 is a pedal for changing the sound image localization of the pseudo sound, and the sound source LSI 11 is controlled by the control circuit 2 in accordance with the stepped-on state of the damper pedal 3, so that the two sounding channels are generated. The volume relationship, that is, the sound image localization of the pseudo sound is determined.

The keyboard 4 is for selecting a sound produced by the electronic keyboard instrument 1, and the key number corresponding to the depressed key is output to the control circuit 2.

The panel 15 is used to set various controls in the electronic keyboard instrument 1, for example, tone color setting,
It controls the pronunciation of rhythm sounds, sets the volume of pseudo sounds to be output, sets sound effects, and displays them accordingly.

The reproducing section 5 includes left and right channel amplifiers 16 and 17 for amplifying the pseudo sound generated by the control circuit 2.
And left and right channel speakers 18, which output pseudo sound,
It is composed of 19.

Next, the operation of the electronic keyboard instrument 1 will be described with reference to the flowcharts of FIGS. Figure 2
3 is an overall flow showing the operation of the electronic keyboard instrument 1.

First, when a power switch (not shown) is turned on (step 31), the hardware (not shown) causes C
Initial settings of the PU 7, the RAM 9, the sound source LSI 11, and the like are performed. After that, the CPU 7 follows a predetermined program stored in the ROM 8 and sets a flag F indicating the key depression state of the keyboard.
Is set to a value 0, and the following control of the electronic keyboard instrument 1 is started (step 32).

Next, the CPU 7 reads the state of the panel 15, outputs a signal for displaying the state according to the result, and sets the tone color and volume setting data to RA.
Write to M9 (step 33). Next, the depression state of the pedal such as the damper pedal 3 is read, and the result is saved in the RAM 9 (step 34).

Next, in step 35, the keyboard processing operation is performed. This operation is performed according to the flowchart shown in FIG. First, the keyboard scan circuit 10
All the keyboards are scanned for a fixed period of time, and it is monitored whether or not the keyboard is pressed (step 36).

When the key is depressed, the CPU 7 sets the flag F to the value 1, and then inputs the depressed key signal,
The key number corresponding to the key is determined (step 37),
The tone color address corresponding to the key, the attack level corresponding to the key pressing speed, the tone color parameter such as the decay speed, etc. are input to the tone generator LSI 11 via the bus line 14 (step 38). If no key is pressed, the process returns to step 33.

Next, the CPU 7 monitors whether or not the damper pedal 3 is depressed from the pedal depression state saved in step 34 (step 39). If the damper pedal 3 is not depressed, the pan pot value is read from the pedal OFF pan pot data table stored in the ROM 8 in correspondence with the key number obtained in step 37 (step 40). If the damper pedal 3 is depressed, the pan pot value is read from the pedal ON pan pot data table (step 41).

The panpot value is a coefficient for determining the volume of the pseudo sound output from each channel, that is, the sound image localization, and corresponds to the key number of the depressed key and is between 1 and 0. Is set in advance.

FIG. 4 shows an example of a panpot data table (hereinafter simply referred to as “table”) stored in the ROM 8. The upper column of the figure is a table for pedal ON, and the lower column is a table for pedal OFF. The left column of each table shows the address value of the panpot data, the middle column shows the panpot value CL for the left channel, and the right column shows the panpot value CR for the right channel. The address value of each table corresponds to the key number,
In this example, the smaller the address value, the smaller the key number (low tone side).

FIG. 5 shows the relationship between the address value and the panpot value. As can be seen from FIGS. 4 and 5, in this example of panpot data, the two panpot values for the left and right channels are not particularly limited for each address value in both tables, but the sum of the two is 1. Is set. Further, in the table for pedal ON, the panpot value for the left channel has the maximum value CL _{ONMA X} (for example 1.0) at the head address (0000).
The minimum value CL _ONMIN (for example, 0.0) is stored in the final address (00FF), and is set to gradually decrease in the middle of these. From the above-mentioned relationship with the panpot value for the left channel, the panpot value for the right channel is the minimum value CR _ONMIN (0.0) at the start address,
At the final address, the maximum value is CR _ONMAX (1.0),
It gradually increases in the middle of these.

On the other hand, the pan pot value of the pedal OFF table is set to a narrower range than that of the pedal ON table, and the pan pot value of the left channel is pedal ON at the head address (0100). maximum CL smaller maximum value than _ONMAX CL _OFFMAX (eg 0 for use.
7), a minimum value CL _OFFMIN (for example, 0.3) larger than the minimum value CL _ONMIN for turning on the pedal is stored at the final address (01FF), and gradually decreases in the middle thereof. The panpot value for the right channel is the minimum value CR _OFFMIN (0.3) at the start address and the maximum value CR at the end address.
_OFFMAX (0.7), which gradually increases in the middle.

Since the panpot data is set as described above, the reading of the panpot value in step 40 or 41 described above is specifically performed as follows. That is, when the key A is pressed while the damper pedal 3 is not depressed, the CPU 7 causes the key A
The key number of the key is determined, and the address value P corresponding to the determined key number is determined from the pedal OFF table.
Read _aOFF and then read this read address value P
_{From aOFF} , the panpot value CL _{OF F} for the left channel (eg 0.54) and the panpot value CR for the right channel
_OFF (for example, 0.46) is read (step 40).

On the other hand, when the key A is _pressed while the damper pedal 3 is depressed, the CPU 7 reads out the address value P _aON corresponding to the key number of the key A from the table for pedal ON, and further. , From the read address value P _aON , the pan pot value CL for the left channel
_ON (e.g., 0.6) and reads the pan value CR _ON for the right channel (e.g. 0.4) (step 41).

Next, the panpot value obtained in step 40 or 41 is output to the tone generator LSI 11 (step 4
2). The sound source LSI 11 outputs the pseudo sounds of the left and right channels to the D / A units 12 and 13, respectively, with the volumes corresponding to the left and right panpot values, respectively. D / A section 1
Reference numerals 2 and 13 convert a digital pseudo sound into an analog pseudo sound and output the analog pseudo sound to the amplifiers 16 and 17 of the reproducing unit 5, respectively. The amplifiers 16 and 17 amplify the pseudo sound to a predetermined volume, and then output it to the speakers 18 and 19 to sound (step 43). With the above, a series of keyboard processing operations are completed, and the operations from step 33 onward in FIG. 2 are repeatedly executed.

On the other hand, when it is determined in step 36 that the key is not depressed, it is determined whether or not the flag F is set to the value 1 (step 44).
When the flag F = 1, the pseudo sound generation is stopped (step 45), the flag F is set to the value 0, and then the flag F =
When it is 0, the process directly returns to step 33.

As described above, according to this embodiment, the right and left 2
The pan pot value for one channel is the damper pedal 3
When the pedal is not pressed, the pedal OFF table is used. When the damper pedal 3 is pressed, the pedal is turned ON.
Are read out from the respective tables. Further, since the pan pot value of the pedal ON table is set to a wider range than that of the pedal OFF table, when the damper pedal 3 is not stepped on, for example, in the range shown in FIG. 6A. While sound image localization can be obtained, when the damper pedal 3 is stepped on, a wider range of sound image localization as shown in FIG. 6B can be obtained.

The sound image localization differs depending on the key number of the depressed key whether the damper pedal 3 is depressed or not, and when the key number is the minimum, that is, the lowest tone, the sound localization for the left and right channels is performed. When the panpot value is maximum and minimum, respectively, it is at the leftmost position, and as the key number increases, the panpot values for the left and right channels gradually decrease and increase, respectively, to the right, Is the maximum, that is, the highest tone, the position is on the far right. In this way, the sound image localization can be changed according to the depressed state of the damper pedal 3 and the key number of the depressed key, and therefore, a variety of performances can be performed.

In the present embodiment, the volume of the left and right channels is changed according to the depression state of one damper pedal 3, but the electronic keyboard instrument 1 uses a pedal for changing the sound. When a plurality of pedals are provided, different sound image localization may be given to each pedal,
In that case, another panpot data table for another pedal is stored in the ROM, the type of pedal is discriminated by the control circuit 2, and the corresponding panpot data is further discriminated according to the discrimination result. All you have to do is read the panpot value from the table. Alternatively, it can be performed by using only one panpot data table and changing the address read by the CPU according to the ON / OFF state and type of the pedal.

The numerical value and array of panpot data are also
The method is not limited to the one shown in the embodiment, and can be arbitrarily performed. For example, if the panpot data is arranged in the left-right direction opposite to that in the embodiment, the sound image localization can be reversed in the left-right direction with respect to the same key pressed, and if arranged randomly, the sound image localization can be reversed in the key arrangement. It is possible to randomly generate sound image localization.

In addition, in the control of details, it is possible to arbitrarily change the details without departing from the gist of the present invention.

[0035]

As described above, according to the present invention, the sound image localization is changed by making the relationship of the volume of each sounding channel output from the electronic keyboard instrument different when the pedal is depressed and when it is not depressed. Can be made. Further, the sound image localization can be changed depending on the key number of the depressed key. Therefore, it is possible to perform a more varied performance as compared with the conventional electronic keyboard instrument in which the length of the afterglow time of the pseudo sound generated when the damper pedal is depressed is different.

[Brief description of drawings]

FIG. 1 is a diagram showing a block of an electronic keyboard instrument according to the present invention.

FIG. 2 is a flowchart showing the overall operation of the electronic keyboard instrument according to the present invention.

FIG. 3 is a flowchart showing a keyboard processing operation of the operations of FIG.

[FIG. 4] For pedal ON and OF stored in ROM
It is a figure which shows the content of the pan pot data table for F.

FIG. 5 is a diagram showing a relationship between a pan pot address value and a pan pot value for pedal ON and OFF.

FIG. 6 is a diagram showing a range of sound image localization obtained when the pedal is turned on and off.

[Explanation of symbols]

 1 electronic keyboard musical instrument 2 control circuit (detection means, volume determination means, discrimination means) 3 damper pedal 4 keyboard 5 playback unit (playback means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoshito Nishitani, 200 Terashima-cho, Hamamatsu-shi, Shizuoka Kawai Musical Instrument Works Co., Ltd.

Claims (2)

[Claims] 1. An electronic keyboard instrument having a pedal for changing a sound, a detecting means for detecting an ON / OFF state of the pedal, a reproducing means having a plurality of sound generation channels for outputting a pseudo sound, An electronic keyboard instrument, comprising: a sound volume determining means for determining the sound volume of the pseudo sound output to each of the plurality of sound generation channels according to the ON / OFF state of the pedal detected by the detecting means. 2. A discriminating means for discriminating the key number of the depressed key is further provided, and the volume determining means discriminates by the ON / OFF state of the pedal detected by the detecting means and the discriminating means. The electronic keyboard instrument according to claim 1, wherein the volume is determined according to a key number.