JPH1063264A - Electronic musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain a musical fun and interest by varying a display state in correspondence to operation information while controlling the waveform of the musical tone to be generated according to the operation information corresponding to grasping operation. SOLUTION: A CPU 4 fetches the pressure data and temp. data for the three sample components outputted by an input operating element 2 and calculates respectively averaged average pressure and average temp. In succession, this CPU controls timbre by changing harmonic components by varying the waveform kinds formed according to the average temp. obtd. by this input information detection processing and varying the envelope shape to be multiplied in accordance with the average pressure. Next, the CPU reads out the display control signals out of a luminance and saturation conversion table stored in a ROM 5 with the temp. data and pressure data obtd. by the input information detection processing as addresses. The CPU, then, executes the light emission processing to set the display state corresponding to the clamping state of the input operating element 2 by driving the display device 3 to emit light by the formed display control signals.

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 suitable for use in educational toys.

[0002]

2. Description of the Related Art As is well known, in recent electronic musical instruments, waveform data of various timbres is stored in a waveform memory, and the waveform data selected in accordance with a timbre designation operation is depressed. In many cases, after reading at a reading speed corresponding to the pitch of a key, a musical tone is formed by adding an envelope so as to obtain a desired tone.

[0003]

By the way, such a conventional electronic musical instrument is provided with various operators for selecting a waveform or variously changing a shape of a waveform envelope to obtain a desired tone. Users who do not have specialized knowledge have no way of knowing how to change the waveform shape to obtain a desired tone, which makes it difficult to obtain musical enjoyment and fun.

[0004] In particular, such a tendency is remarkable in an educational musical toy-type electronic musical instrument in which the target of the user group is children.
Even if various controls related to waveform control are provided,
There is a problem in that a child cannot be used to mature, and as a result, the original purpose of the musical instrument of "obtaining musical enjoyment and interest" cannot be achieved.

Accordingly, the present invention has been made in view of such circumstances, and provides an electronic musical instrument capable of controlling a waveform only by a sensuous operation, and easily obtaining musical enjoyment and fun. It is intended to be.

[0006]

According to the first aspect of the present invention, there is provided an operation information generating means for detecting a gripping operation and generating operation information corresponding to the gripping operation. Waveform control means for controlling a waveform of a musical tone to be generated according to operation information generated by the information generation means;
Display control means for changing a display mode according to the operation information.

According to the second aspect of the present invention, there is provided an operation information generating means for detecting and outputting pressure information and temperature information corresponding to a gripping operation, and generating the operation information in accordance with the pressure information generated by the operation information generating means. Tone color control means for controlling the envelope waveform of the tone to be controlled, while controlling the tone by changing the overtone component of the tone to be generated according to the temperature information;
A display control unit that changes display saturation in accordance with the temperature information while changing display brightness in accordance with the pressure information.

In the present invention, while controlling the waveform of a musical tone to be generated in accordance with operation information corresponding to a gripping operation, a display mode is changed in accordance with the operation information,
Waveform control can be performed only by intuitive operation, and musical enjoyment and fun can be easily obtained.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION An electronic musical instrument according to the present invention can be applied to a sound effect generator used for educational toys or video game machines. Hereinafter, an electronic musical instrument according to an embodiment of the present invention will be described as an example with reference to the drawings.

A. 1. Configuration of Embodiment (1) External Appearance FIG. 1 is an external view showing an external appearance of an electronic musical instrument according to an embodiment of the present invention. In this figure, 1 is a musical instrument main body,
Keyboard 1a, panel switch group 1 arranged on panel surface
b and a speaker SP. Panel switch group 1b
Is composed of a power switch for turning on and off the power, a tone switch for selecting a tone, an automatic performance switch for starting automatic performance, and the like.

Reference numeral 2 denotes an input operator which is gripped by the operator. The input operator 2 is formed of, for example, an elastic material such as rubber or a vinyl resin material. Inside the input operator 2, a pressure sensor for detecting a pressure at the time of a gripping operation and a temperature sensor for detecting a temperature are provided. Pressure data P and temperature data Q generated by A / D conversion of these sensor outputs are generated. In other words, as the input operation element 2 is gripped more strongly, the pressure data P rises, while the body temperature is easily transmitted and the temperature data Q rises.

Reference numeral 3 denotes a display device whose luminance and saturation change in accordance with a display drive signal supplied from the main body 1. The display device 3 is composed of, for example, light emitting diodes of three primary colors and the like.
, And the saturation is changed in accordance with the temperature data Q.

In the embodiment having such an appearance, when the input operation element 2 is gripped, pressure data P and temperature data Q corresponding to the operation are supplied to the main body 1 and the main body 1 is operated.
Then, waveform control is performed based on the pressure data P and the temperature data Q to change the timbre of the generated tone,
The state of waveform control is displayed by changing the luminance and saturation of the display device 3. By doing so, waveform control can be easily performed only by intuitive operation, and the display mode changes accordingly, so that musical enjoyment and fun can be obtained. Hereinafter, the configuration of such an embodiment will be described.

(2) Configuration Next, the configuration of the embodiment will be described with reference to FIG.
Note that, in FIG. 2, the same elements as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted. In FIG. 1, reference numeral 4 denotes a CPU for controlling each section of the musical instrument, the operation of which will be described later. Reference numeral 5 stores, in addition to various control programs loaded into the CPU 4, automatic performance data and a luminance / chroma conversion table for generating a display drive signal corresponding to the above-described pressure data P and temperature data Q.

Here, the contents of the luminance / chroma conversion table will be described with reference to FIG. This brightness / saturation conversion table is composed of a two-dimensional array table as shown in FIG. 3, in which the temperature data Q specifies the saturation, while the pressure data P specifies the brightness, and the intersection D of the two. Generate a corresponding display control signal. Note that the saturation approaches “white” as the value of the temperature data Q increases, while the luminance increases as the value of the pressure data P increases.

Next, returning to FIG. 1, the configuration of the embodiment will be described. In the figure, reference numeral 6 denotes a RAM used as a work area of the CPU 4, and various registers
The flag data is temporarily stored. Reference numeral 7 denotes a sound source configured by a harmonic synthesis method, which synthesizes various harmonics stored in an internal memory to form a musical tone waveform, and multiplies the musical tone waveform by an envelope to generate a musical tone signal. The tone generator 7 variably controls a tone color of a tone signal generated by changing a harmonic component by changing a type of waveform to be synthesized or changing an envelope shape to be multiplied based on a tone parameter supplied from the CPU 4. The tone signal thus generated is supplied to the amplifier 8 after D / A conversion, amplified to a predetermined level, and then emitted from the speaker SP.

C. Operation of Embodiment The operation of the embodiment having the above configuration will be described with reference to FIGS. Hereinafter, the processing of the main routine will be described first as a schematic operation, and then the processing of various routines will be described.

(1) Operation of Main Routine When the power is turned on by turning on the power switch in the panel switch group 1, the CPU 4 loads a control program stored in the ROM 5 and executes the main routine shown in FIG. Then, the process proceeds to Step SA1. In step SA1, various registers and flags provided in the RAM 6 and the tone generator 7 are reset to zero and initial values are set to set initial values.

When the system initialization is completed, the CPU 4 proceeds to step SA2, scans the panel switch group 1 to detect the presence or absence of a switch event, and performs a switch process corresponding to the detected switch event. In this switch processing, for example, when a tone switch is operated, control data for selecting a tone is generated according to the switch operation.

Next, when the switch processing is completed, the CP
U4 proceeds to step SA3, takes in the pressure data P and temperature data Q for three samples output from the input operator 2 and calculates the averaged average pressure P 'and average temperature Q', respectively. Perform information detection processing.
Subsequently, in step SA4, the harmonic component is changed by changing the type of waveform to be synthesized according to the average temperature Q ′ obtained by the input information detection processing, and if the envelope shape to be multiplied based on the average pressure P ′ is different. Timbre control processing for controlling the timbre.

Next, at step SA5, the temperature data Q 'and the pressure data P' obtained by the input information detecting process are obtained.
And a display control signal for reading a display control signal from the luminance / chroma conversion table (see FIG. 3) stored in the ROM 5 as a read address. In step SA6, tone generation processing is performed to instruct the sound source 7 to perform note-on / note-off of the tone controlled in tone color in step SA4. In this tone generation process, note-on / note-off of a musical tone corresponding to the key press / release of the keyboard 1a is instructed in the keyboard mode, and R in the automatic performance mode.
Instructs note-on / note-off of a tone corresponding to the automatic performance data read from the OM5.

Next, in the next step SA7, the display device 3 is driven to emit light by the display control signal generated in the above step SA5, and a light emission process for setting a display mode corresponding to the gripping state of the input operation element 2 is performed. After this, C
The PU 4 returns the processing to the above-described step SA2, and thereafter repeats steps SA2 to SA7.

(2) Operation of Input Information Detection Processing Routine When the input information detection processing routine is executed through the above-described step SA3, the CPU 4 advances the processing to step SB1 shown in FIG. In step SB1, the pressure data P output from the input operator 2 (see FIG. 2) is fetched over three samples and stored in registers P _n , P _n-1 and P _n-2 , respectively.

Then, at the next step SB2, the average pressure P 'is calculated based on the pressure data P stored in the registers P _n , P _n-1 and P _n-2 , and the register P'
To be stored. Then, in step SB3, similarly to Step SB1, the temperature data Q output from the input operation device 2 takes over three samples, the register Q _n, respectively, is stored in Q _n-1, Q _n-2.

Next, at step SB4, the temperature data Q stored in the registers Q _n , Q _n-1 and Q _n-2 are respectively stored.
The average temperature Q ′ is calculated based on the above and stored in the register Q ′. Next, in step SB5, the CPU 4 stores the measurement time of the average pressure P ′ and the average temperature Q ′ in the register T. Thereafter, the CPU 4 completes the present routine and returns the processing to the main routine. in this way,
In the input information detection processing routine, the pressure data P and the temperature data Q for three samples output from the input operator 2
To obtain the average pressure P ′ and the average temperature Q ′, respectively, while obtaining the measurement time T. The purpose of the measurement time T will be described later.

(3) Operation of Tone Control Processing Routine Next, the operation of the timbre control routine for controlling the timbre based on the average pressure P ', the average temperature Q' and the measurement time T obtained by the input information detection processing routine will be described. . When the timbre control processing routine is executed through the above-described step SA4 (see FIG. 4), the CPU 4 advances the processing to step SC1 shown in FIG. 6, and changes the overtone component of the musical tone signal by the spectrum control processing routine described later. At the same time, the process proceeds to the next step SC2, where the envelope shape of the tone signal is changed by an envelope control processing routine described later. Hereinafter, the operations of the spectrum control processing routine and the envelope control processing routine will be described in detail.

Operation of Spectrum Control Routine When the spectrum control routine is executed via step SC1, the CPU 4 advances the process to step SD1 shown in FIG. 7 so that the value of the average temperature Q 'falls within the range of "100 to 127". It is determined whether or not there is. Here, if the value of the average temperature Q ′ is within the range, the determination result is “YES”, and the process proceeds to Step SD5 to select the waveform type to be harmonically synthesized to “sine wave”.

On the other hand, when the value of the average temperature Q 'is "100 to 12"
If it is not in the range of "7", the determination result is "NO" and the process proceeds to Step SD2. And step SD2
In SD4, the value of the average temperature Q 'is determined. When the value of the average temperature Q ′ falls within the range of “75 to 99”, the process proceeds to step SD6, and the type of waveform to be synthesized is selected as “square wave”. Similarly, when the value of the average temperature Q ′ is “50 to 74”, “25 to 49”, or “24 or less”, the process proceeds to steps SD7 to SD9, respectively.
“Square wave”, “Triangle wave” and “Sawtooth wave” are selected. As described above, in the spectrum control routine, the type of waveform used when performing harmonic synthesis is changed in accordance with the value of the average temperature Q ′, thereby changing the overtone component of the synthesized tone signal to change the timbre tendency. I try to make it.

Operation of Envelope Control Routine When the envelope control routine is executed via step SC2, the CPU 4 advances the processing to step SE1 shown in FIG. 8, and waits until the average pressure P 'becomes "0" or more. When the processing proceeds to step SE2, CPU 4 together with obtaining a pressure value increase amount from the difference (P ₁ '-P _2') of the 'average pressure P ₂ measured this time and' average pressure P ₁ of the last measurement, the previous An increase time is obtained from a difference (T ₁ −T ₂ ) between the measurement time T ₁ and the current measurement time T ₂ .

Next, in step SE3, the envelope waveform in the attack area is controlled based on the attack rate corresponding to the pressure value increase amount and the increase time obtained in step SE2 and the attack time corresponding to the increase time. . When the process proceeds to the next step SE4, it is determined whether or not the average pressure P 'is increasing. When the average pressure P' is increasing, the determination result is "YES", and the above-described step SE4 is performed.
Then, the process returns to 2 and the envelope control of the attack waveform area is continuously performed.

On the other hand, if the average pressure P 'does not tend to increase, the result of the determination in step SE4 is "NO", and the process proceeds to the next step SE5. Step SE
At 5, the average pressure P 'held for a certain time is set to the sustain level S, and at the following step SE6, it is determined whether or not the average pressure P' is decreasing. Here, when the average pressure P ′ has not decreased, it is regarded that the average pressure P ′ is still in the sustain region, the determination result is “NO”, and the process returns to step SE5.

On the other hand, if the average pressure P 'has decreased, the result of the determination in step SE6 is "YES".
, And the process proceeds to Step SE7. When proceeding to step SE7, the CPU 4 sets a release time R according to the decrease in the average pressure P 'within a certain time. As described above, in the envelope control, the grip condition of the input operator 2, that is, an attack waveform having a steep rise when strongly and sharply grasped,
If you hold it from there, you will be sustained. Then, release control is performed according to the degree of weakening the grip.

As described above, in this embodiment, the tone color is controlled by variably controlling the envelope shape and the overtone component in accordance with the average pressure P 'and the average temperature Q' which change according to the gripping state of the input operator 2. Since the state of the waveform control is displayed by changing the luminance and saturation of the display device 3 corresponding to the tone control, the waveform can be easily controlled only by intuitive operation, and the display mode may be adjusted accordingly. Because it changes, musical enjoyment and fun can be obtained.

In the above-described embodiment, the envelope shape and the overtone component are variably controlled based on the degree of gripping of one input operator 2. However, the present invention is not limited to this.
It is also possible to adopt a mode in which the musical tone parameters are controlled based on an operation of grasping them with both hands or stepping on the feet. In the present embodiment, the input operator 2 and the display device 3
Alternatively, for example, the input operator 2 may be formed of a light-transmitting material, and the display device 3 may be built therein and integrated therewith.
By doing so, the input operator 2 can be changed according to the gripping condition.
The light emission form changes, and new interest is obtained.

[0035]

According to the present invention, while controlling the waveform of a musical tone to be generated according to operation information corresponding to a gripping operation,
Since the display mode is changed according to the operation information, the waveform can be controlled only by the intuitive operation, and the enjoyment of music and the fun can be easily obtained.

[Brief description of the drawings]

FIG. 1 is an external view showing an external appearance of an electronic musical instrument according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a configuration of the embodiment.

FIG. 3 is a diagram for explaining the contents of a luminance / chroma conversion table.

FIG. 4 is a flowchart showing an operation of a main routine.

FIG. 5 is a flowchart showing an operation of an input information detection processing routine.

FIG. 6 is a flowchart illustrating an operation of a tone color control processing routine.

FIG. 7 is a flowchart illustrating an operation of a spectrum control routine.

FIG. 8 is a flowchart illustrating an operation of an envelope control routine.

[Explanation of symbols]

2 input operator (operation information generation means) 3 display device (display control means) 4 CPU (operation information generation means, waveform control means, display control means) 5 ROM (display control means) 6 RAM 7 sound source (waveform control means)

Claims (2)

[Claims] 1. An operation information generating means for detecting a gripping operation and generating operation information corresponding to the gripping operation, and controlling a waveform of a musical tone to be generated in accordance with the operation information generated by the operation information generating means. An electronic musical instrument, comprising: a waveform control unit; and a display control unit that changes a display mode according to the operation information. 2. An operation information generating means for detecting and outputting pressure information and temperature information corresponding to a gripping operation, and controlling an envelope waveform of a musical tone to be generated according to the pressure information generated by the operation information generating means. On the other hand, timbre control means for controlling timbre by changing harmonic components of a musical tone to be generated according to the temperature information, and display for changing display saturation according to the temperature information while changing display luminance in accordance with the pressure information. An electronic musical instrument comprising control means.