JPH0452695A - Parameter setting device of electronic keyboard musical instrument - Google Patents

Abstract

PURPOSE:To prevent parameter values from becoming discrete and to improve the operability by specifying a parameter value which is a continuous quantity visually on a keyboard, and operating an operation element and making a fine adjustment. CONSTITUTION:When a key depression detecting means 32 detects a key which is depressed on the keyboard 31, a 1st parameter setting means sets a 1st discrete parameter which accords with the order of the keys on the keyboard corresponding to the key, the operation element 41 provided to the musical instrument is operated to set a 2nd parameter as a continuous quantity within the range of respective discrete parameters set by at least above 1st parameter generating means, and the both are interpolated to obtain a parameter which is a continuous quantity. Namely, outline parameter values are specified at relative positions of respective keys on the keyboard by the keyboard operation and a fine adjustment is made with the operation element provided separately from the keyboard.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a parameter setting device for setting parameters in an electronic keyboard instrument.

[Prior art]

Conventionally, as this type of device, a device disclosed in Japanese Utility Model Application Publication No. 185097/1983 is known. With this device, tuning parameters are set by operating the keyboard. Specifically, the parameters are set so that when a high-pitched key on the keyboard is pressed, the pitch will be raised, and the pitch will be raised when the high-pitched key on the keyboard is pressed. The parameters are set to lower the pitch when a key is pressed.

[Problem to be solved by the invention]

In the conventional device described above, parameters can be set in stages according to the arrangement of keys on the keyboard, but the parameters set for each weight have to be discrete.
It was not possible to make subtle adjustments. In order to address the above-mentioned problems, the present invention provides a parameter setting device for an electronic keyboard instrument that can use a keyboard to set discrete but general parameters as well as make subtle adjustments. The purpose is to Means for Solving the CtS Problem] In order to achieve the above object, the structural features of the present invention are as follows:
In an electronic keyboard instrument that uses a keyboard as a parameter setting means, a pressed key detection means detects a pressed key on the keyboard, and an order of keys on the keyboard corresponding to the pressed key. a first parameter setting means for setting a discrete first parameter according to the first parameter, and a second parameter of a continuous quantity within the same range at least in the range between each of the discrete parameters set by the first parameter generating means; and parameter interpolation means for interpolating the discrete first parameter by the second parameter, which is a continuous quantity, to obtain a continuous quantity parameter.

[Operation and effects of the invention]

In the present invention configured as described above, when the pressed key detecting means detects a pressed key on the keyboard, the first parameter setting means detects a key on the keyboard corresponding to the pressed key. At the same time, by operating an operator provided on the electronic keyboard instrument, the operator can set at least each of the discrete parameters set by the first parameter generating means. A second parameter of a continuous quantity within the same range is set in the range between the parameters, and the interpolation means interpolates the first parameter, which is a discrete quantity, by the second parameter, which is a continuous quantity, to obtain a parameter of a continuous quantity. That is, when operating a keyboard, a rough parameter value can be specified based on the relative position of each weight on the keyboard, and fine adjustments can be made using an operator provided separately from the keyboard. Therefore, since continuous parameter values can be visually specified using the keyboard, operability is facilitated, and in such cases, fine adjustments can be made by operating the controls, and parameter values are discrete. It is possible to prevent this from happening and improve operability.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 schematically shows the external appearance of an electronic musical instrument equipped with a parameter setting device according to the present invention, and FIG. 2 shows the overall schematic configuration of the electronic musical instrument. This electronic musical instrument generates musical tones using a formant sound synthesis method, and uses the parameter setting device to set parameters for this formant sound synthesis. In this electronic musical instrument, the generation of musical tones is controlled under the control of a control section 20 connected to a bus 10, and a CPU 21 included in the control section 20 executes a program stored in a ROM 22. The RAM 23 is used to store and read various state variables and variables. A keyboard 30 and an operation panel 40 are connected to the bus 10.
The PU 21 detects the operation status of the keyboard section 30 and operation panel 40 via the bus 10, and outputs a control signal to the sound source circuit 60 in accordance with the detected operation. As a result, the tone generator circuit 60 generates a musical tone signal corresponding to the operating situation, and a sound system 70 connected to the tone generator circuit 60 and including an amplifier causes the speaker 80 to generate a musical tone corresponding to the musical tone signal. As shown in 3rd rIIJ, the keyboard section 30 includes a keyboard 31 composed of movable parts of each weight, a switch circuit 32 that is opened and closed by the movable part 31, and outputs opening/closing data of the switch circuit 32 onto the bus. It is composed of an interface 33. The switch circuit 32 closes when each weight is pressed, and the output voltage changes from "0" volts to "+V".
The interface 33 detects that each weight is pressed by a change in the voltage, and the CPU 21 detects the operation status of each weight via the interface 33. The operation panel 40 also has a group of operators 41 provided on the panel on the top surface of the main body, as shown in FIGS. 1 and 4, and specifically includes a mode switching operator 41a and a parameter selection operation. Children 41b to 41e and other operators 41f1
Also provided are a pitch bend wheel 41g, a modulation wheel 41h, and the like. These operator groups 41 are connected to a switch circuit, etc. in an electric circuit 42, and the output of the electric circuit 42 is connected to an interface 43. The mode switching operator 41a in the operator group 41 is an operator that switches the content represented by the operation on the keyboard section 30. When it is in the on state, it becomes a normal performance mode and the keyboard operation represents a performance, and when it is in the off state, it is a formant mode. The setting mode is entered, and keyboard operations represent formant parameter settings. The switch to which the mode switching operator 41a is connected has "+V" volts in the on state and "0" volts in the off state. Further, the parameter selection operators 41b to 41e are operators for selecting the formant parameter setting target in the formant setting mode, and the switch to which the parameter selection operators 41b to 41e are connected is the selected one of the four switches. Only one is in the on state and becomes "+V" volt, and the remaining three are in the off state and becomes "0" volt. On the other hand, the pitch bend wheel 41g has a neutral return type polyneum connected to the A/D conversion circuit 42b, and its output ranges from "0" to "+V
” varies within a range of volts. Further, the modulation wheel 41h has a normal volume connected to the A/D conversion circuit 42c, and its output ranges from "0" to "+".
It can be set to any value within the range of "V" volts. The CPU 21 detects each operation on the keyboard section 30 and the operation 1 < channel 40, sets various parameters stored in the RAM 23, and controls the display on the display 90 in response to the operation. Next, the operation of this embodiment configured as described above will be explained. It is assumed that the performer first sets formant parameters and then starts playing. As shown in FIG. 5, this electronic musical instrument can set the center frequencies and levels of four peaks of the power spectrum (hereinafter referred to as the first to fourth formants) as formant parameters. Note that FIG. 5 is a diagram showing a power spectrum, in which the horizontal axis represents frequency and the vertical axis represents the level. When the performer turns on the power switch (not shown), the CP
The U21 starts executing the program stored in the ROM 22, controls the generation of musical tones according to the performance operations on the keyboard section 30, detects the operation status on the operation panel 40, and performs parameter setting processing according to the operation. Do this. When the CPU 21 executes the above program, the CPU 21 performs initial setting processing such as clearing variables in step 100 of the main routine shown in FIG. Determine whether to execute setting processing or normal performance processing. When the performer turns off the mode switching operator 41a to enter the formant setting processing mode, step 20
The CPU 21 executes formant setting processing. As shown in FIG. If the key is pressed, it is determined that the key is on, and steps 320 onwards are executed; however, if no key is pressed, it is determined that the key is not on, and the formant setting process ends. The CPU 21 determines whether the key is pressed or not by checking the keyboard section 30 via the bus 10.
The judgment is made by inputting operation status data of the keyboard 31 from the interface 33 in . In the formant setting process, the center frequencies of the first to fourth formants are set using the keyboard 31 and the pitch bend wheel 41a, and the levels of the formants are set using the modulation wheel 41b. That is, the horizontal axis of the power spectrum shown in FIG. 5 is taken as the lowest to highest key on the keyboard 31, and any key on the keyboard 31 is pressed to specify the center frequency of each formant. At this time, since the keyboard 31 alone becomes discrete, fine adjustment is made by rotating the pitch bend wheel 41a. In addition, the level of the formant is specified by operating the modulation wheel 41b before determining this center frequency. If it is determined in step 310 of the formant setting process that the key is on, the CPU 21 inputs the key code obtained via the interface 33 of the keyboard section 30. Based on KC, the key code KC is determined in step 320.
The central frequency fpl of the formant represented by
A fine adjustment frequency fp2 corresponding to the pitch bend FB which is the manipulated variable is derived. Which frequency fpl, f
Even when obtaining p2, a conversion table or a calculation formula may be used. In this example, R.O.
The M23 is equipped with a key food and a center frequency conversion table, and the center frequency fpl is calculated from the key code KC of the pressed key.
Read out. Further, after obtaining the frequencies fpl and fp2, the CPU 21
In step 340, the output status of the A/D conversion circuit 42c is inputted via the interface 43, and from the same output, the formant level fl corresponding to the modulation level ML, which is the operating amount of the modulation wheel 41h, is derived. . In step 350, the CPU 21 detects which of the parameter selection operators 41b to 41e is turned on via the interface 43, and
As the formant parameters corresponding to the operator that is turned on, (fpl+fp2) is written to the center frequency and fl is written to the formant level in a predetermined storage area in the RAM 23. If the performer turns on the parameter selection operator 41b, it is used as the formant parameter for the first formant, and when the selection operator 41c is turned on, it is used as the formant parameter for the second formant. If the selection operator 41e is turned on, it is set as the formant parameter of the third formant, and if the selection operator 41e is turned on, it is set as the formant parameter of the fourth formant.After the writing is completed, the CPU 21 displays the written parameter on the display 90 in step 360. Thereafter, it is determined again in step 310 whether or not the key is on, and if the key is on, the above-mentioned process is repeated. If the key is off, the same judgment is NO'' and the formant setting process ends. Therefore, the value immediately before the key-off is set as the formant parameter.After the performer turns on the parameter selection operators 41b to 41e in order to set the formant parameters as described above, the player turns on the mode switching operator 41a. Turn off, key 3
1 starts playing. The CPU 21 switches the mode switching operator 41 at step 200.
The operation status of a is judged, and based on the same judgment, the mode switching operator 4 is
It is determined that 1a is on, and normal performance processing is executed in step 400. In this normal performance processing, the CPU 21 detects the performance operation status of the keyboard 31 via the interface 33 in the keyboard section 30, and generates a key food signal KC representing the pressed key corresponding to the detected performance operation. A key-on signal KON representing the state is output to the sound source circuit 60. Further, the operation status of each operator is detected via the interface 43 on the operation panel 40, and a predetermined parameter signal representing tone selection, etc. is output to the sound source circuit 60 in accordance with the detected operation. Thereby, the sound source circuit 60 generates a musical tone signal corresponding to each operating situation, and causes the speaker 80 to generate a musical tone corresponding to the musical tone signal via the sound system 70 consisting of an amplifier and the like. In the above embodiment, the keyboard is assumed to be a frequency axis, but it is also possible to set parameters of other continuous quantities. For example, it can be applied to setting the volume or setting the mixing ratio when synthesizing multiple sounds. Further, in the above-described embodiment, a formant synthesized sound source has been described, but a configuration may also be adopted in which the modulation depth and modulation frequency, which are parameters of each operator in frequency modulation synthesis, are set. Furthermore, although the present invention was implemented using software in the above embodiments, it may also be configured using a microprogram or hardware. In addition, a modi-resistance run wheel is used to set the formant level, but the level is set by the key pressing speed (initial touch data) and key pressing pressure (aftertouch data). You can also do that. 4. Brief explanation of the rIIJ surface FIG. 1 is an external view of an electronic musical instrument according to an embodiment of the present invention;
Figure 2 is a schematic diagram of the electronic musical instrument, Figure 3 is a detailed diagram of the keyboard, Figure 4 is a detailed diagram of the operation panel, and Figure 5 is a detailed diagram of the keyboard.
The figure is a power spectrum diagram showing the target of formant parameters, FIG. 6 is a flowchart corresponding to the main routine of control, and FIG. 7 is a flowchart corresponding to formant setting processing. Explanation of symbols 10...Bus, 20...Control unit, 21...CPU
122... ROM123... RAM, 30... Keyboard section, 31... Keyboard, 32... Switch circuit, 4
0...Operation panel, 41a...Mode switching operator,
41b to 41e...parameter selection operators, 41g.
...Pitch bend wheel, 41h...Modification wheel.

Claims (1)

[Scope of Claims] An electronic keyboard instrument that uses a keyboard as a parameter setting means, comprising: a pressed key detection means for detecting a pressed key on the keyboard; and a pressed key detecting means for detecting a pressed key on the keyboard; a first parameter setting means for setting discrete first parameters according to the order of the keys in the above; and at least a continuous quantity within the same range between each of the discrete parameters set by the first parameter generating means. an operator for setting a second parameter; and parameter interpolation means for interpolating the discrete first parameter by the second parameter, which is a continuous quantity, to obtain a continuous quantity parameter. Parameter setting device for keyboard instruments.