JP2002091447A - Converting device for electronic musical instrument and method for the same and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is possible to operate a half damper pedal with a satisfactory response regardless of the individual difference or deterioration of the half damper pedal. SOLUTION: This converter of an electronic musical instrument is provided with a half damper pedal (1) for performing an output corresponding to an operating position, a detecting means (3) for detecting the maximum operating position output and the minimum operating position output when the half damper pedal is operated at the maximum operating position and the minimum operating position, and converting means (4, 5) for converting the output of the half damper pedal according to the detected maximum operating position output and minimum operating position output of the half damper pedal.

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 half damper pedal, and more particularly to a technique for converting the output of a half damper pedal of an electronic musical instrument.

[0002]

2. Description of the Related Art There are many electronic musical instruments such as electronic pianos that convert an analog value output from an operator into a digital value and process the digital value. For example, there is a half damper pedal that imitates the operation of a damper pedal of a piano and changes the depth of the damper effect according to the degree of depression. When the half damper pedal is depressed, the decay speed of the sound being generated becomes slow.

[0003] The range of the output value of the half damper pedal varies depending on individual differences. Also, if the half damper pedal is used for many years, the half damper pedal becomes obsolete,
The output value may change. For example, the minimum and maximum values of the half damper pedal are originally 0 and 127
On the other hand, when the half damper pedal is not depressed, a value of 1 or more is output, or when the half damper pedal is fully depressed, a value of 126 or less is output. is there.

In this case, a value in a range expected by the half damper pedal cannot be output. Conventionally, in order to solve this problem, a variation in the half damper pedal is considered in advance, and a portion near the minimum operation position and the maximum operation position is provided with a predetermined margin. That is, in the range of the margin, the output is converted to the original minimum operation position output (for example, 0) or the maximum operation position output (for example, 127).

[0005]

In order to prevent individual differences of the half damper pedal, the above-mentioned margin is set large. As a result, there arises a problem that the response of the half damper pedal is deteriorated. For example, even when the half-damper pedal starts to be depressed, the damper effect cannot be obtained immediately. If the response of the half damper pedal is to be improved, the output value of the half damper pedal varies due to individual differences and aging.

An object of the present invention is to realize an electronic musical instrument that can operate a half damper pedal with good response regardless of individual differences of the half damper pedal. Another object of the present invention is to realize an electronic musical instrument capable of converting the output value to an appropriate value when the output changes due to aging of the half damper pedal.

[0007]

According to one aspect of the present invention, a half damper pedal that outputs according to an operation position, and a maximum damper pedal when the half damper pedal is operated to a maximum operation position and a minimum operation position. Detecting means for detecting the operating position output and the minimum operating position output; and converting means for converting the output of the half damper pedal according to the detected maximum operating position output and minimum operating position output of the half damper pedal. An electronic musical instrument converter is provided.

According to another aspect of the present invention, there is provided a method of converting an electronic musical instrument having a half-damper pedal for performing an output in accordance with an operation position, wherein (a) the half-damper pedal has a maximum operation position and a minimum operation position. Detecting a maximum operation position output and a minimum operation position output when the half damper pedal is operated; and (b) detecting the maximum operation position output and the minimum operation position output of the half damper pedal, Converting the output of the electronic musical instrument.

According to still another aspect of the present invention, there is provided a recording medium storing a program for an electronic musical instrument having a half-damper pedal for performing an output according to an operation position, wherein (a)
Detecting the maximum operation position output and the minimum operation position output when the half damper pedal is operated to the maximum operation position and the minimum operation position; and (b) detecting the maximum operation position output and the minimum operation position of the detected half damper pedal. A computer-readable recording medium that records a program for causing a computer to execute the procedure of converting the output of the half damper pedal according to the operation position output is provided.

According to the present invention, since the maximum operation position output and the minimum operation position output of the half damper pedal are detected, and the output of the half damper pedal is converted according to these outputs, the output of the half damper pedal is related to the individual difference of the half damper pedal. The half-damper pedal can be operated with a good response. Further, when the output changes due to aging by using the half damper pedal for a long time, the output value can be converted to an appropriate value.

[0011]

(First Embodiment) FIG. 1 shows an example of the configuration of an electronic musical instrument according to a first embodiment of the present invention. The half damper pedal 1, which is an operator, outputs an analog value corresponding to an operation position according to an operation by a player. A /
The D conversion circuit 2 converts an analog value output from the half damper pedal 1 into a digital value. Half damper pedal 1
Is changed by the A / D conversion circuit 2 in accordance with the operation of the player.
It can output a multi-step digital value equal to or greater than the value.

The output of the half damper pedal 1 is a minimum operation position output (for example, 0) when the pedal is not depressed, and a maximum operation position output (for example, 127) when the pedal is fully depressed.
become. However, there is variation in the minimum operation position output and the maximum operation position output due to individual differences of the half damper pedal. Further, the half damper pedal may be deteriorated due to long-term use, and the minimum operation position output and the maximum operation position output may change. For these reasons,
The half damper pedal 1 may have a minimum operation position output of, for example, 1 or more when not depressed, or may have a maximum operation position output of 126 or less when fully depressed. For these reasons, in order to prevent variations in the output of the half damper pedal 1, a maximum and minimum value detection and table number determination unit 3, a conversion table selection and data conversion unit 4, and a conversion table 5 are provided.

The maximum and minimum value detection and table number determination section 3 detects the minimum operation position output and the maximum operation position output of the half damper pedal 1 output from the A / D conversion circuit 2. Specifically, a manufacturer or a player of the electronic musical instrument actually operates the half damper pedal to the maximum operation position and the minimum operation position, and detects the maximum operation position output and the minimum operation position output at that time.

Next, based on the conversion table number table shown in FIG. 2, the maximum value and minimum value detection and table number determination section 3 converts the detected minimum operation position output and the maximum operation position output. Determine the table number. In the conversion table number table of FIG. 2, the vertical axis represents the minimum operation position output, and the horizontal axis represents the maximum operation position output.
For example, when the detected minimum operation position output is 2 and the maximum operation position output is 125, the conversion table number is determined to be No. 3.

The conversion table selection and data conversion unit 4
The conversion table in the conversion table (ROM) 5 is selected according to the conversion table number determined above. FIG.
2 shows a configuration example of the conversion table 5. Conversion table 5
Has a plurality of conversion tables, and the horizontal axis represents the conversion table number. The vertical axis of the conversion table 5 indicates the output value of the half damper pedal 1.

FIG. 4 is a graph showing an example of the contents of one conversion table in the conversion table 5 (FIG. 3). The horizontal axis is
The input from the half damper pedal 1 to the conversion table is shown, and the vertical axis represents the output of the conversion table. As for the input, the minimum operation position output is detected as 0 + α (α is an integer of 0 or more) and the maximum operation position output is detected as 127-β (β is an integer of 0 or more) due to individual differences and aging of the half damper pedal. Is done. As for the output, the minimum operation position output becomes 0, which is the original minimum operation position output, and the maximum operation position output becomes 127, which is the original maximum operation position output. The original minimum operation position output and the maximum operation position output are predetermined fixed values.

The conversion table 5 includes the half damper pedal 1
Is converted to the original minimum operation position output (for example, 0) when operated at a predetermined margin Mmin near the minimum operation position, and is converted to the original output when the half damper pedal 1 is operated at a predetermined margin Mmax near the maximum operation position. The output is converted to the maximum operation position output (for example, 127). Margin Mm
By providing in and Mmax, it is possible to cope with a change in the output of the half damper pedal 1 due to its use. For example, in the case of the third conversion table number in FIG.
When the output of the half damper pedal 1 is 0 to 3, it is converted to 0 as the margin Mmin, and when the output of the half damper pedal 1 is 124 to 127, it is converted to 127 as the margin Mmax. According to the conversion table number (that is, the detected minimum operation position output and maximum operation position output), the characteristic line MM together with the margins Mmin and Mmax is used.
Changes. As described above, the conversion table number can be determined by detecting the minimum operation position output and the maximum operation position output.

Next, the conversion table selection and data conversion section 4 selects a conversion table corresponding to the determined conversion table number from the conversion table 5 and outputs a half damper output from the A / D conversion circuit 2. The output of the pedal 1 is converted as described above.

The keyboard 6 has a plurality of keys that can be pressed and released. The keyboard scanning circuit 7 outputs a key-on event or a key-off event including a key number (pitch) and velocity (key pressing speed) according to the operation of the keyboard 6.

The tone generator circuit 8 responds to the output of the half damper pedal 1 converted by the conversion table selection and data conversion section 4 by a key-on / output signal output by the keyboard scan circuit 7.
Generate a tone signal based on the OFF event. In particular,
As the output of the half damper pedal 1 increases, the decay speed of the tone signal decreases.

The D / A conversion circuit 9 converts a digital value output from the tone generator 8 into an analog value. The amplifier 10
Amplifies analog tone signals. The tone signal is generated by the speaker 11.

As described above, it is possible to correct individual differences of the half damper pedal 1 and variations in output due to aging, so that it is not necessary to unnecessarily increase the margins Mmin and Mmax. In addition, while maintaining good response of the half damper pedal 1, the half damper pedal 1
Can be corrected.

FIG. 5 shows a hardware configuration of the electronic musical instrument according to the present embodiment. The bus 21 includes a keyboard 22, panel switches and controls 23, a RAM 24, a ROM 25, a C
The PU 26 and the tone generator 27 are connected.

The CPU 26 performs various calculations or processes, and executes processes such as flowcharts shown in FIGS. 6 to 12 described later according to a computer program stored in the ROM 25. The ROM 25 stores a conversion table number table (FIG. 2) and a conversion table (FIG. 3) in addition to the computer program. RAM 24 is a CP
Used as a working area for U26.

The panel switches and controls 23 include controls such as a tone switch and a volume slider in addition to the half damper pedal 1 (FIG. 1). The keyboard 22 has a plurality of keys that can be pressed and released.

The tone generating means 27 includes the tone generator circuit 8 shown in FIG.
It has a D / A conversion circuit 9, an amplifier 10 and a speaker 11, and performs sound generation processing according to the operation of a keyboard 22 and an operation element (half damper pedal) 23.

FIG. 6 is a flowchart showing the processing of the main routine performed by the CPU 26 of FIG. When the power of the electronic musical instrument is turned on, an initialization process is performed in step SA1. At step SA2, it is checked whether or not the factory mode switch on the panel switch 23 (FIG. 5) is pressed by the manufacturer of the electronic musical instrument. In step SA3, it is checked whether or not the mode is the factory mode. When the mode is the factory mode, factory mode processing is performed in step SA4. When the mode is not factory mode, normal processing is performed in step SA5. For details of the factory mode processing in step SA4,
This will be described later with reference to the flowchart of FIG. Details of the normal processing in step SA5 will be described later with reference to the flowchart in FIG.

FIG. 7 is a flowchart showing details of the factory mode process shown in step SA4 of FIG. In step SB1, the panel switch 23 (FIG. 5) is scanned. In step SB2, it is checked whether or not a switch event has occurred indicating that the half damper pedal setting switch on the panel switch has been pressed. When there is the switch event, the process proceeds to step SB3, and when there is no switch event, the process proceeds to step SB3.
Proceed to 8.

In step SB3, preparations are made for setting the half damper pedal. In step SB4, it is checked whether or not the maximum value setting mode switch of the half damper pedal has been pressed. When pressed,
In step SB5, the maximum value register is set to the minimum value (for example, 0).
, And bypasses step SB6 to skip to step S6.
Proceed to B8.

In step SB8, the operator (half damper pedal) 23 (FIG. 5) is scanned. Step SB
In step 9, it is checked whether or not there is an event of the half damper pedal. Step SB1 when there is an event
0, and if there is no event, the process proceeds to step SB14.

In step SB10, it is checked whether the mode is the maximum value setting mode. When the mode is the maximum value setting mode, the process proceeds to Step SB11, and a maximum value setting process is performed. Details of this processing will be described later with reference to the flowchart of FIG. Thereafter, in the maximum value setting mode, the process proceeds to step SB1 via step SB12.
Other processing is performed in 4 and the processing ends.

FIG. 8 is a flowchart showing details of the maximum value setting process shown in step SB11 of FIG. In step SC1, it is checked whether the input value from the half damper pedal is larger than the maximum value register. When it is larger, the process proceeds to step SC2, and when it is not larger, the process ends. In step SC2, the above input value is set in the maximum value register. Step SC3 bypasses because the minimum value has not yet been determined. The process of step SC2 is executed every time the half damper pedal is operated, the value of the maximum value register is updated, and the value of the maximum operation position output is finally stored in the maximum value register.

Next, the case where the minimum value setting mode switch is pressed will be described. When the minimum value setting mode switch is pressed, in FIG. 7, it is determined in step SB6 that the mode is the minimum value setting mode, and the process proceeds to step SB7. In step SB7, the minimum value register is set to the maximum value (for example, 127).
Initialize to

Next, in step SB8, the half damper pedal is scanned. In step SB9, it is determined that there is an event of the half damper pedal, and the flow advances to step SB12 via step SB10. In step SB12, it is determined that the mode is the minimum value setting mode, and the process proceeds to step SB13. In step SB13, a minimum value setting process is performed.
Details of this processing will be described later with reference to the flowchart of FIG. Thereafter, other processing is performed in step SB14, and the processing ends.

FIG. 9 is a flowchart showing details of the minimum value setting process shown in step SB13 of FIG. In step SD1, it is checked whether the input value from the half damper pedal is smaller than the minimum value register. When it is smaller, the process proceeds to step SD2, and when it is not smaller, the process ends. In step SD2, the above input value is set in the minimum value register. The process of step SC2 is executed every time the half damper pedal is operated, the value of the minimum value register is updated, and the value of the minimum operation position output is finally stored in the minimum value register. Step SD3
Now, referring to the conversion table number table of FIG. 2,
The conversion table number is determined according to the updated values of the maximum value register and the minimum value register. After that, the process ends.

In the above description, the case where the maximum value setting mode switch is first pressed and then the minimum value setting mode switch is pressed has been described as an example. You may press a switch. In this case, first, the value of the minimum value register is updated in step SD2 of FIG. 9, and then the value of the maximum value register is updated in step SC2 of FIG. Thereafter, step SC in FIG.
At 3, the conversion table number is determined according to the updated maximum value register and minimum value register.

FIG. 10 is a flowchart showing details of the normal processing shown in step SA5 of FIG. Step S
At E1, the keyboard 22 (FIG. 5) is scanned. In step SE2, it is checked whether or not a keyboard event indicating that the keyboard has been operated has occurred. When a keyboard event has occurred, the process proceeds to step SE3, and when a keyboard event has not occurred, the process proceeds to step SE4. In step SE3, sound generation and mute processing are performed. The details of the pronunciation process will be described later with reference to the flowchart of FIG.
Details of the mute processing will be described later with reference to the flowchart of FIG. Thereafter, the flow advances to step SE4.

In step SE4, the operator (half damper pedal) is scanned. In step SE5, it is checked whether or not a half damper pedal event indicating that the half damper pedal has been operated has occurred. When there is the event, the process proceeds to step SE6, and when there is no event, the process proceeds to step SE8.

At step SE6, a conversion table (FIG. 3) corresponding to the conversion table number determined above is designated, and the output of the half damper pedal is converted according to the conversion table. In step SE7, a sound source process is performed according to the output of the converted half damper pedal. For example, the decay speed of the currently sounding sound is adjusted according to the output. Thereafter, the flow advances to step SE8. Step S8
Then, other panel processing and display processing are performed, and the processing ends.

FIG. 11 is a flowchart showing the details of the tone generation process shown in step SE3 of FIG. In step SF1, a sounding channel is assigned according to a key-on event. In step SF2, each parameter at the time of sound generation is calculated. In step SF3, the above-mentioned parameters are transmitted to the sound source LSI 8 (FIG. 1), and sound generation processing is performed.

FIG. 12 is a flow chart showing the details of the mute processing shown in step SE3 of FIG. In step SG1, a corresponding sounding channel is searched according to the key-off event. In step SG2, it is checked whether the half damper is on (the output of the half damper pedal is 1 or more). When the half damper is off, the process proceeds to step SG3, and when the half damper is on, the process proceeds to step SG4. In step SG3,
The normal silence envelope value is set, and step SG5
Proceed to. In step SG4, the envelope value is recalculated according to the converted output of the half damper pedal, and the process proceeds to step SG5. The envelope value is calculated such that the greater the output of the half damper pedal, the slower the attenuation speed. In step SG5, the parameters such as the above-mentioned envelope value are transmitted to the sound source LSI 8 (FIG. 1), and the mute processing is performed.

(Second Embodiment) FIG. 13 shows a configuration example of an electronic musical instrument according to a second embodiment of the present invention. In the second embodiment, instead of the maximum value and minimum value detection and table number determination unit 3, conversion table selection and data conversion unit 4, and conversion table 5 of the first embodiment (FIG. 1),
A maximum and minimum value detection and table creation unit 33, a data conversion unit 34, and a conversion table 35 are provided.

The maximum / minimum value detection and table creation unit 33 includes the A / D conversion circuit 2 as in the first embodiment.
The minimum and maximum operation position outputs of the half damper pedal 1 output from the controller are detected.

Next, the maximum value and minimum value detection and table creation unit 33 creates a conversion table shown in FIG. 15 based on the detected minimum operation position output and maximum operation position output, and stores the conversion table in the flash ROM 35. . FIG. 14 is a graph showing the contents of the conversion table of FIG. 15, in which the horizontal axis is input and the vertical axis is output.

Next, a method of creating a conversion table will be described. The detected minimum operation position output is set to I0min, and the maximum operation position output is set to I0max. The margin near the minimum operation position is Mmin, and the margin near the maximum operation position is Mmax. The resolution (the number of steps) is D. In the case of FIG. 14, the resolution D is 3, but the larger the resolution D, the smoother the operation becomes.

The input values Imin and Imax are obtained by the following equations. Imin = I0min + Mmin Imax = I0max−Mmax

The input change value ΔI and the output change value ΔO are obtained by the following equations. ΔI = (Imax−Imin) / (D + 1) ΔO = (Omax−Omin) / D

The conversion table shown in FIG. 15 is created based on the above values. For example, when the input is smaller than Imin, the output becomes 0. Otherwise, the input is (Imin + Δ
When it is smaller than I), the output becomes Omin. Otherwise, when the input is smaller than (Imin + ΔI × 2), the output becomes (Omin + ΔO). Others are similarly converted according to the conversion table.

The conversion table created above is stored in the flash ROM 35. The data conversion unit 34 performs A / D conversion according to a conversion table in the flash ROM 35.
The output of the half damper pedal 1 output from the conversion circuit 2 is converted as described above.

Also in the second embodiment, it is possible to correct individual differences of the half damper pedal 1 and variations in output due to aging, so that the margins Mmin and Mmax can be corrected.
Need not be unnecessarily large. Further, the variation of the half damper pedal 1 can be corrected while maintaining the good response of the half damper pedal 1.

According to the first embodiment, since various conversion tables can be set in advance, conversion tables having various characteristics can be used, and the characteristics of the half damper can be finely set. Have the advantages that can be. However, since a plurality of conversion tables must be stored at all times, there is a disadvantage that a large capacity ROM 5 (FIG. 1) is required.

According to the second embodiment, the conversion table is re-created each time the minimum operation position output and the maximum operation position output are detected, and only one conversion table needs to be stored in the flash ROM 35. There is an advantage that a small-capacity flash ROM 35 may be prepared. However, since the conversion table is created by calculation, there is a disadvantage that it is difficult to create a complicated conversion table.

(Third Embodiment) The third embodiment of the present invention is different from the first embodiment only in that the main routine of FIG. 16 is used instead of the main routine of FIG. In FIG. 16, when the power of the electronic musical instrument is turned on,
At step SH1, an initialization process is performed. In step SH2, the input value from the half damper pedal is detected. In step SH3, it is checked whether the input value is larger than a predetermined threshold. That is, when the power of the electronic musical instrument is turned on, it is checked whether the half damper pedal is depressed. If the half damper pedal is depressed, the process proceeds to step SH4. If the half damper pedal is not depressed, the process proceeds to step SH5. Step SH4
Then, the maximum value and minimum value detection processing is performed, and step SH is performed.
Go to 5. The details of the processing in step SH4 will be described later with reference to FIG.
This will be described with reference to the flowchart of FIG. Step S
In H5, the same normal processing as in step SA5 in FIG. 6 is performed.

FIG. 17 is a flowchart showing details of the maximum value and minimum value detection processing shown in step SH4 in FIG. In step SI1, the maximum value register
The input value from the half damper pedal detected in step SH2 is stored. In step SI2, the value of the minimum value register is initialized to a maximum value (for example, 127).

In step SI3, the input value from the half damper pedal is detected. In step SI4, it is checked whether the input value is larger than the value of the maximum value register. If it is larger, the process proceeds to step SI13. If it is not larger, the process proceeds to step SI5. Step SI
At 13, the input value is stored in the maximum value register, and the process proceeds to Step SI5. At step SI5, it is checked whether or not the input value is larger than a predetermined threshold. If it is larger, the process returns to step SI3, and the above processing is repeated. By depressing the half damper pedal to the maximum, the value of the maximum value register is updated in step SI13, and the maximum operation position output is set in the maximum value register soon. Thereafter, when the half damper pedal is released, the detected input value becomes smaller than a predetermined threshold value, and the process proceeds to step SI6.

At step SI6, the counter is initialized. For example, a counter for several seconds is set. Step SI
At 7, the input value from the half damper pedal is detected.
In step SI8, it is checked whether the input value is smaller than the value of the minimum value register. If smaller, proceed to step SI9; if not smaller, step S9
Proceed to I10. In step SI9, the above input value is stored in the minimum value register, and the flow advances to step SI10.

In step SI10, the value of the counter is decremented. In step SI11, it is checked whether or not the value of the counter is larger than 0. If it is larger, the process returns to step SI7 and the above processing is repeated. That is, the above processing is repeated for the time set in the counter. When the value of the counter becomes 0, step SI12
Proceed to. In step SI12, the conversion table number is determined according to the values of the maximum value register and the minimum value register.

According to the third embodiment, both the maximum operation position output and the minimum operation position output can be detected by depressing the half damper pedal and then releasing it. The first embodiment is advantageous when it is desired to reset either the maximum operation position output or the minimum operation position output. According to the third embodiment, there is an advantage that the maximum operation position output and the minimum operation position output can be detected by a simple operation. Note that the third embodiment may be applied to the second embodiment.

According to the first to third embodiments, it is possible to correct an individual difference of the half damper pedal and a variation in output due to aging, so that the margins Mmin and Mma can be corrected.
It is not necessary to take x unnecessarily large. Further, it is possible to correct the variation of the half damper pedal while maintaining the good response of the half damper pedal.

More specifically, the half damper pedal can be operated with good response regardless of the individual difference of the half damper pedal. Further, when the output changes due to aging by using the half damper pedal for a long time, the output value can be converted to an appropriate value.

A program implemented by supplying a program code of software for realizing the functions of the above-described embodiment and operating according to a program stored in a computer (CPU or MPU) of the electronic musical instrument is also provided.
It is included in the category of the present invention.

In this case, the program code itself of the software realizes the functions of the above-described embodiment, and the program code itself and means for supplying the program code to the computer, for example, storing the program code The recorded recording medium constitutes the present invention. As a recording medium for storing such a program code, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, CD-R
An OM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.

Each of the above embodiments is merely an example of the embodiment for carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. . That is, the present invention can be implemented in various forms without departing from the technical idea or the main features.

[0064]

As described above, according to the present invention, the maximum operation position output and the minimum operation position output of the half damper pedal are detected, and the output of the half damper pedal is converted according to these outputs. The half damper pedal can be operated with good response regardless of the individual difference of the damper pedal. Further, when the output changes due to aging by using the half damper pedal for a long time, the output value can be converted to an appropriate value.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration example of an electronic musical instrument according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a conversion table number table.

FIG. 3 is a diagram showing a conversion table.

FIG. 4 is a graph showing the contents of a conversion table.

FIG. 5 is a block diagram illustrating a hardware configuration of the electronic musical instrument.

FIG. 6 is a flowchart showing processing of a main routine.

FIG. 7 is a flowchart showing a factory mode process.

FIG. 8 is a flowchart illustrating a maximum value setting process.

FIG. 9 is a flowchart illustrating a minimum value setting process.

FIG. 10 is a flowchart showing a normal process.

FIG. 11 is a flowchart showing a tone generation process.

FIG. 12 is a flowchart showing a mute process.

FIG. 13 is a block diagram illustrating a configuration example of an electronic musical instrument according to a second embodiment of the present invention.

FIG. 14 is a graph showing the contents of a conversion table.

FIG. 15 is a diagram showing a conversion table.

FIG. 16 is a flowchart showing a process of a main routine of the electronic musical instrument according to the third embodiment of the present invention.

FIG. 17 is a flowchart illustrating a maximum value and minimum value detection process.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operator (half damper pedal) 2 A / D conversion circuit 3 Maximum value and minimum value detection and table number determination part 4 Conversion table selection and data conversion part 5 Conversion table 6 Keyboard 7 Keyboard scan circuit 8 Sound source circuit 9 D / A Conversion circuit 10 Amplifier 11 Speaker 21 Bus 22 Keyboard 23 Panel switch and operator 24 RAM 25 ROM 26 CPU 27 Musical sound generation means 33 Maximum and minimum value detection and table creation unit 34 Data conversion unit 35 Conversion table

Claims (13)

[Claims] 1. A half damper pedal for outputting an output according to an operation position, and a detecting means for detecting a maximum operation position output and a minimum operation position output when the half damper pedal is operated to a maximum operation position and a minimum operation position. A conversion device for converting the output of the half damper pedal according to the detected maximum operation position output and minimum operation position output of the half damper pedal. A plurality of conversion tables for converting an output of the half damper pedal; and a plurality of conversion tables for converting the output of the half damper pedal into a maximum operation position and a minimum operation position output. Means for selecting one of the conversion tables to convert the output of said half damper pedal. 3. The conversion device for an electronic musical instrument according to claim 2, wherein said conversion means converts the output of said half damper pedal to correct individual differences or aging of said half damper pedal. 4. The conversion means, wherein the maximum operation position output and the minimum operation position output of the half damper pedal detected by the detection means are corrected to the original maximum operation position output and minimum operation position output. 4. The electronic musical instrument converter according to claim 3, wherein the output of the half damper pedal is converted. 5. The electronic musical instrument conversion device according to claim 4, wherein the original maximum operation position output and the minimum operation position output are predetermined fixed values. 6. When the half damper pedal is operated at a predetermined margin near a maximum operation position, the conversion means converts the half damper pedal to an original maximum operation position output. 6. The electronic musical instrument conversion device according to claim 5, wherein when operated by a margin, the output is converted to an original minimum operation position output. 7. The conversion means creates a conversion table in accordance with a maximum operation position output and a minimum operation position output of the half damper pedal detected by the detection means, and generates the conversion table in accordance with the conversion table. 2. The electronic musical instrument converter according to claim 1, wherein the converter converts the output. 8. The electronic musical instrument conversion apparatus according to claim 7, wherein said conversion means converts the output of said half damper pedal to correct individual differences or aging of said half damper pedal. 9. The conversion means, wherein the maximum operation position output and the minimum operation position output of the half damper pedal detected by the detection means are corrected to the original maximum operation position output and minimum operation position output. 9. The electronic musical instrument converter according to claim 8, wherein the output of the half damper pedal is converted. 10. The electronic musical instrument converter according to claim 9, wherein the original maximum operation position output and the minimum operation position output are predetermined fixed values. 11. When the half damper pedal is operated at a predetermined margin near a maximum operation position, the conversion means converts the half damper pedal to an original maximum operation position output. 11. The electronic musical instrument conversion device according to claim 10, wherein when the electronic musical instrument is operated with a margin, the output is converted into an original minimum operation position output. 12. A method for converting an electronic musical instrument having a half damper pedal that outputs according to an operation position, comprising: (a) a maximum operation when the half damper pedal is operated to a maximum operation position and a minimum operation position; Detecting a position output and a minimum operation position output; and (b) converting an output of the half damper pedal according to the detected maximum operation position output and minimum operation position output of the half damper pedal. How to convert electronic musical instruments. 13. A recording medium on which a program of an electronic musical instrument having a half damper pedal for performing an output according to an operation position is recorded, wherein (a) the half damper pedal is operated to a maximum operation position and a minimum operation position. And (b) converting the output of the half-damper pedal according to the detected maximum and minimum operation position outputs of the half-damper pedal. And a computer-readable recording medium on which a program for causing a computer to execute the steps is recorded.