JPH1020854A - Electronic percussion instrument and impact blow detector of electronic percussion instrument device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an impact blow detector of an electronic percussion instrument device which has an excellent impact blow feel and is extremely small in impact blow sounds by providing this instrument device with a head having an impact blow surface comprising net-like blanks and an impact blow detecting means which detects the impact blow on this head as an electric signal. SOLUTION: The impact blow detector 10 is provided with a head sensor 14 which detects the impact blow on the head 12 having the impact blow surface comprising the net-like blank and a rim shot sensor 18 for detecting the impact blow to a rim 16. The head 12 is formed by laminating a first net 56 woven by plain weave intersecting longitudinal and transverse fibers orthogonally with each other and a second net 58, as the net-like blanks, in such a manner that the each other's weave directions intersect diagonally with each other, i.e., intersect with each other at an angle smaller than 90 deg. and adhering the laminated nets to a frame 60. The rim 16 is formed by integral molding of metallic materials and comprises an edge part 66 bored with hole parts 64 penetratable with engaging pins 54 in its outer peripheral part and a rim impact blow part 68 formed on the inner peripheral side thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic percussion instrument apparatus and a percussion detection apparatus for an electronic percussion instrument apparatus, and more particularly, to a percussion instrument such as an acoustic drum that produces a musical sound when a player strikes with a stick or the like. The present invention relates to an electronic percussion instrument simulating the above and a percussion detecting device in the electronic percussion instrument.

[0002]

2. Description of the Related Art Conventionally, in an electronic percussion instrument device such as an electronic drum simulating an acoustic drum, a striking detecting device having a striking surface generally called a striking pad is used as a device for detecting a striking. Used.

[0003] As such a hit detecting device, for example,
A hit detection device disclosed in Japanese Patent Application Laid-Open No. 8-44375 is known. The impact detecting device disclosed in Japanese Patent Application Laid-Open No. 8-44375 has a hitting surface formed by coating a plate-like case with a soft polymer material.

[0004]

However, in a striking detecting device in which a striking surface is formed by covering a plate-shaped case with a soft polymer material, a strong sense of resilience is obtained when striking the striking surface. In addition to the problem that it is not possible to obtain a good feeling of impact, there is also a problem that the impact sound when the impact surface is struck is loud and the impact sound may disturb the performance.

On the other hand, it has been proposed to use an acoustic drum head provided with a sensor for detecting a hit as a hit detecting device.

However, when the head of the acoustic drum is used as a hit detection device as described above, the head of the acoustic drum is used as it is, so that the feeling of hitting is excellent, but the hitting sound becomes loud. There was a problem that it hindered the performance.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and an object of the present invention is to provide a striking detection device for an electronic percussion instrument device which is excellent in striking sound and has an extremely low striking sound. What you want to do.

Further, according to the present invention, it is possible to detect which position of the striking device has been struck and control the timbre based on the detection result, thereby obtaining a timbre change according to the striking position in the same manner as an acoustic drum. It is an object of the present invention to provide an electronic percussion instrument device capable of performing such operations.

Further, the present invention is not limited to a playing method in which the hit detecting device is hit with a stick, but also an electronic device in which a playing method of rubbing or hitting the hit detecting device with a brush can be realized. It is intended to provide a percussion instrument.

[0010]

In order to achieve the above object, the present invention provides a percussion detecting device for an electronic percussion instrument, which comprises: a head having a striking surface made of a net material; and a center position of the head. And a hit detecting means for detecting the hit to the head as an electric signal.

In the above-described percussion detecting device for an electronic percussion instrument, the net-like material is formed by superposing a plurality of nets formed by combining vertical and horizontal fibers, and the fibers of the superimposed adjacent nets are at an angle of 90 degrees to each other. They may intersect at a small angle.

Further, an electronic percussion instrument according to the present invention is provided with a percussion detecting means for detecting a percussion on a head having a percussion surface as an electric signal, and an electric signal detected by the percussion detecting means for inputting a musical tone. In the electronic percussion instrument apparatus having a musical tone control information generating means for generating the control information of the above, and a musical tone signal forming means for inputting the control information from the musical tone control information generating means and forming a musical tone signal, the musical tone control information generating means comprises: A hitting position detecting means for detecting a hitting position of the head based on a half-wave of a rising portion of the electric signal detected by the hitting detecting means, and control information corresponding to a detection result from the hitting position detecting means. Is generated.

In the above-mentioned electronic percussion instrument,
The hitting position detecting means may detect the hitting position of the head by measuring the length between the zero crosses of the half wave at the rising portion.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an electronic percussion apparatus according to the present invention.

FIG. 1 is a block diagram showing an example of an embodiment of an electronic percussion instrument according to the present invention. This electronic percussion instrument has a hitting surface formed on a head 12 formed of a net-like material as described later. A hit detection device 10 provided with a head sensor 14 for detecting a hit and a rim shot sensor 18 for detecting a hit to the rim 16;
Head sensor 14 and rim shot sensor 18
The analog-to-digital (A / D) conversion is performed on the detection signal output from
The A / D converter 20 detects the impact on the head 12 from the detection signal of the head sensor 14 input from the A / D converter 20, the intensity thereof, the impact position, the performance with the brush, and the A / D conversion. From the detection signal of the rim shot sensor 18 input from the detector 20 to detect the impact on the rim 16 and its strength and supply the detected data to a CPU 24 described later.
P22 and a sound source IC3 for outputting the output from the DSP 22 to be described later.
A CPU 24 that converts necessary performance information into the necessary performance information and supplies it to the tone generator IC 34, detects an operation of an operator group 30 described later, controls the DSP 22, and the like;
Reads the program that is executed by
A only memory (ROM) 26, a random access memory (RAM) 28 as a working area required for the CPU 24 to execute a program, and a normal performance mode, a brush performance mode, or a tuning mode as an operation mode. Group 30 including mode selection operators, operators for performing tone selection or level setting, and the like, the operation mode selected by the operators of the operator group 30, the tone required for tone selection, and tuning. A display device 32 for displaying a tuning state in the mode; and a digital / analog (D / A) converter to be described later, which reads a waveform memory 36 to be described later based on performance information from the CPU 24 to form a digital tone signal. And a sampler IC 34 for outputting a tone signal. Waveform memory 3 which stores waveform data
6 and a D / A converter 38 for converting a digital tone signal supplied from the tone generator IC 34 into an analog tone signal and outputting the analog tone signal to a sound system including an amplifier and a speaker.

Next, the configuration of the impact detection device 10 will be described with reference to a perspective view of the impact detection device 10 shown in FIG. 2 and a sectional view taken along the line III-III of FIG. 2 shown in FIG.

The impact detecting device 10 has a cylindrical body 50, and the outer periphery of the body 50 has a screw hole (not shown) formed with a screw groove (not shown). Engaging part 5
2 are formed in the radial direction at predetermined intervals.
The engaging portion 52 has an engaging pin 54 formed with a thread for screwing with a screw groove formed in the engaging portion 52.
Is screwed in, and the head 12 and the rim 16 are attached to the body 50 via the engagement pins 54. The engaging pin 54 has a locking projection 54 a for locking the rim 16.

Here, as shown in FIGS. 4 and 5, the head 12 has a first net 56 and a second net 58, which are woven by a plain weave in which vertical and horizontal fibers are orthogonal to each other as a net material, and is connected to each other. The layers are laminated so that the weave directions are oblique and adhered to the frame 60. Here, the weave direction of the first net 56 and the second net 58 is oblique, as shown in FIG. 6, in which the vertical and horizontal fibers are orthogonal to each other at 90 degrees.
Means that when the first and second nets 58 and 58 are overlapped, the fibers of the adjacent first and second nets 56 and 58 intersect each other at an angle α smaller than 90 degrees. It is.

The rim 16 is formed by integrally molding a metal material, and has an edge 66 having an outer peripheral portion provided with a hole 64 through which the engaging pin 54 can penetrate, and an inner peripheral portion of the edge 66. Rim hitting portion 68 extended to the side and formed upright
It is composed of The upper part of the rim hitting portion 68 is covered with a cover member 70 formed of an elastic material such as rubber or sponge.

In order to attach the head 12 and the rim 16 having the above structure to the body 50, first, the head 1 is attached to the body 50.
2 and cover the rim 16 from above the head 12,
The position is adjusted so that the hole 64 of the rim 16 and the screw hole of the engaging portion 52 of the body 50 communicate with each other. Then, the engagement pin 54
Is inserted into the hole 64 of the rim 16 and the screw hole of the engaging portion 52 of the body 50, and the thread of the engaging pin 54 is engaged with the engaging portion 5 of the body 50.
The head 12 and the rim 16 are attached to the body 50 by the locking projections 54a of the engagement pins 54.
And press them against each other.

That is, the engaging pin 54 is connected to the engaging portion 5 of the body 50.
As the screw is screwed into the second screw hole, the edge 66 of the rim 16 is pushed downward in FIG. 3 by the locking projection 54a, and the frame 60 of the head 12 is also pushed downward via the edge 66. For this reason, the first net 56 and the second net 58 whose downward movement is restricted by the upper end 50a of the trunk 50 are stretched on the trunk 50 with a predetermined tension. Therefore,
By adjusting the amount of screwing of the engagement pin 54 into the screw hole of the engagement portion 52 of the body 50, the first net 56 and the second net 5 are adjusted.
8 can be arbitrarily controlled.

The head / sensor support member 7 is provided in the body 50 so as to intersect the axial center of the body 50.
2 are provided. The head sensor 14 is attached to the center portion of the upper surface of the head sensor supporting member 72 so as to be in contact with the second net 58 by a cushioning double-sided tape 78 described later. That is, the head sensor 14 is arranged in contact with the lower surface of the center of the net material composed of the first net 56 and the second net 58 of the head 12.

As shown in FIGS. 7A, 7B and 7C, the head sensor 14 includes a disk-shaped piezoelectric element 76 having an output signal line 74, and the lower surface of the piezoelectric element 76. , A cushioning double-sided tape 78 is stuck. The diameter of the cushioning double-sided tape 78 is set so as to match the node diameter of the piezoelectric element 76.

A truncated cone-shaped cushion member 80 made of an elastic material such as rubber or sponge is attached to the upper surface of the piezoelectric element 76. Cushion member 80
Has a bottom surface formed with a diameter larger than the diameter of the piezoelectric element 76, and has a tapered shape as it goes upward, and is in contact with the second net 58 at a tip portion having a smaller diameter.

Further, the rim shot sensor 18 is adhered by a cushioning double-sided tape 78 in the vicinity of the rim hitting portion 68 at the upper inside of the body 50. The rim shot sensor 18 includes a disk-shaped piezoelectric element 76 having an output signal line 74.
6, a double-sided cushioning tape 78 is attached to the lower surface of the piezoelectric element 76.
Is set to match the node diameter of

That is, in this embodiment, the head sensor 14 from which the cushion member 80 is removed is used as the rim shot sensor 18 to improve the efficiency of parts.

In the above configuration, when the head 12 is hit with the stick 100 (see FIG. 8), the head sensor 14 detects the hit and the stick 10 is hit.
When the rim 16 is hit with 0 (see FIG. 9; in FIG. 9, both the head 12 and the rim 16 are hit with the stick 100), the rim shot sensor 18 hits the rim 16. Is detected, and when the head 12 is rubbed or hit with the brush 102 (see FIG. 10), the head sensor 14 detects the contact of the brush 102 with the head 12.

Here, the head 1 is
2 when hitting the first net 56 and the second net 58
Due to the elasticity of the net-like material consisting of the following, an extremely good hit feeling can be obtained which is close to the hit feeling when hitting the head of the acoustic drum.

Further, the first net 56 and the second net 58 are woven by a plain weave in which vertical and horizontal fibers are orthogonal to each other as a net material.
Are laminated so that their weave directions are oblique to each other, so that the tension is made uniform over the entire surface of the net-like material. Waveforms are also easy to process.

The performance of hitting the head 12 as described above is performed by the first net 56 and the second net 5 of the head 12.
8 is controlled by an output waveform from the head sensor 14 that is in contact with the lower surface of the center of the head sensor 8.
Is located at the center of the first net 56 and the second net 58 of the head 12, the change of the output waveform due to the difference in the hitting position of the head 12 becomes concentric, and the acoustic wave
It becomes easier to express a tone change simulating a drum.

Further, since the cushion member 80 of the head sensor 14 is in contact with the central lower surface of the second net 58 of the head 12, the vibration of the head 12 is attenuated quickly and the output signal is also attenuated quickly. A detection malfunction when the head 12 is repeatedly struck early is suppressed.

The head. Piezoelectric element 7 of sensor 14
6 is in contact with the second net 58 of the head 12 at the small-diameter, small-diameter area at the tip of the truncated cone, so that the impact vibration of the head 12 is directly generated. Is hardly transmitted to the piezoelectric element 76, so that the breakage of the piezoelectric element 76 is suppressed.

Further, since the diameter of the cushioning double-sided tape 78 adhered to the lower surface of the piezoelectric element 76 is defined as the node diameter, the sensitivity of the piezoelectric element 76 is increased, and the subtle change in the vibration of the head 12 due to the difference in the hitting position is reduced. It can be detected accurately.

Further, since air flows through the openings of the stitches of the mesh material composed of the first mesh 56 and the second mesh 58, the striking sound when the head 12 is struck is extremely low. The hitting sound when hitting the head 12 is
This depends on the aperture ratio of the net material composed of the first net 56 and the second net 58, and the higher the aperture ratio, the lower the impact sound. However, if the aperture ratio is too large, the tension of the first net 56 and the second net 58 decreases and the feel of impact deteriorates. Therefore, it is preferable to appropriately balance the feel of impact with the aperture ratio.

Further, since the rim 16 is covered by the cover member 70, the impact sound when the rim 16 is impacted is reduced.

Here, since a large amount of vibration when the rim 16 is hit is transmitted to the body 50, the vibration of the rim 16
The performance by hitting the rim 16 can be controlled by the output waveform of the shot sensor 18.

Next, description will be made on the electrical processing contents when the head 12 of the electronic percussion instrument is hit with the stick 100 or rubbed with the brush 102, or when the rim 16 is hit with the stick 100.

First, the processing in the case where the normal performance mode is selected by operating the mode selection operators of the operator group 30 will be described. The normal performance mode is a mode in which a hit to the head 12 and a hit to the rim 16 are detected to generate a percussion instrument sound.

FIG. 11 shows the DSP in the normal performance mode.
FIG. 2 is a functional block diagram showing a configuration of the sensor 22. Detection signals detected by the head sensor 14 and the rim shot sensor 18 are A / D converted by an A / D converter 20 and input to the DSP 22.

In the DSP 22, the head striking force detecting means detects the head 12 from the detection signal of the head sensor 14.
And outputs head hitting force information to the CPU 24. The head hitting position detecting means detects the hitting position of the head 12 from the detection signal of the head sensor 14, and outputs the head hitting position information to the CPU 24. Output to the rim shot sensor 18 by the rim striking force detecting means.
Detects the impact force on the rim 16 from the detection signal of
The rim striking force information is output to 24.

The head striking force detecting means and the rim striking force detecting means perform a process of detecting a striking force by detecting a peak value of an input signal or the like. Since a process for detecting a striking force can be used, a detailed description thereof will be omitted.

The processing contents of the head hitting position detecting means will be described later in detail.

FIG. 12 shows the CPU in the normal performance mode.
FIG. 3 is a functional block diagram showing the configuration of a sound source IC and a sound source IC. The CPU 24 receives head striking force information, head striking point position information, rim striking force information, and controls for selecting a tone color of the control group 30. Is input, and the CPU 24 converts the input information into information for controlling the sound source IC 34. That is, the CPU 24
The head sound control means and the rim shot sound control means perform a read start address, a read end address, a read speed, a one-shot read or a loop read necessary for reading the waveform data stored in the waveform memory 36. The read mode is supplied to the read control means of the sound source IC 34, the filter coefficient is supplied to the filter means of the sound source IC 34, and the volume information is supplied to the multiplication means of the sound source IC 34.

Next, the processing of the head hitting position detecting means in the DSP 22 will be described. This processing is based on the following characteristics.

That is, the head 1 made of a net material
Observing the detection signal of the head sensor 14 when hitting No. 2, there is a characteristic in a certain frequency band that the time of the first half-wave changes depending on the hit point position. That is, FIG.
(A) As shown in (b), the time T _A of the first half-wave when the center of the head 12 (the hitting position A) is hit, and the time when the outer periphery of the head 12 (the hitting position C) is hit, 1 half-wave and T _C, the first half-wave when struck intermediate (strike position B) between the center and the periphery of the head 12 and T _B, the _{T a> T B> T C} .

As described above, when the head 12 made of a net-like material is hit, the time of the first half-wave gradually decreases as the hit point moves from the center to the outer periphery.

FIG. 14 is a functional block diagram showing the structure of the head hitting point detecting means of the DSP 22.
The detection signal detected by the sensor 14 is A / D converted by the A / D converter 20 and input to the DC cut filter. The DC cut filter is a high-pass filter that removes a DC component. The detection signal input to the DC cut filter is a low-pass filter that removes the DC component and removes unnecessary high-frequency components. (LP filter).

The detection signal from which unnecessary high-frequency components have been removed by the LP filter is input to the first half-wave detection circuit. The first half-wave detection circuit detects the first half-wave by detecting the rising edge of the waveform of the input detection signal and the first zero cross. The counter counts only while the first half-wave detection circuit is detecting the first half-wave,
An arithmetic circuit calculates the hitting position based on the count value of the counter.

The hit point position thus calculated is input to the CPU 24 as head hit point position information.

Next, a description will be given of the processing in the case where the mode selection operation element of the operation element group 30 is operated to select the brush performance mode. This brush performance mode is the head 12
Is a mode in which a percussion instrument sound is generated by detecting that the brush 102 has been rubbed or hit with a brush 102.

FIG. 15 shows DS in the brush performance mode.
FIG. 4 is a functional block diagram showing the configuration of P22,
The detection signal detected by the sensor 14 is A / D converted by the A / D converter 20 and input to the DSP 22.

In the DSP 22, the head 12 is detected by the brushing detecting means from the detection signal of the head sensor 14.
Is detected when the brush is rubbed with the brush 102, and the CPU
24, and outputs the gain information to the head 12 based on the detection signal of the head sensor 14 by the brush strike detecting means.
Is detected when the brush 102 is hit with the brush 102, and C is detected.
It is output to the PU 24 as impact information.

FIG. 16 shows the CP in the brush performance mode.
FIG. 4 is a functional block diagram showing the configuration of a U24 and a sound source IC 34. To the CPU 24, gain information and striking information are input, and timbre selection information by operating an operator for selecting a timbre of the operator group 30 is input. The CPU 24 converts the input information into information for controlling the sound source IC 34.

Here, by setting the brush performance mode, the brush sound control means of the CPU 24 can control the sound source IC.
Set the read control means of 34 to loop read,
A predetermined waveform indicating the brush sound is continuously read from the waveform memory 36 by loop reading. Further, the brush sound control means of the CPU 24 appropriately supplies the filter coefficient to the filter means of the sound source IC 34, and when gain information is input from the DSP 22, supplies the volume information to the multiplication means of the sound source IC 34 according to the gain information. Generates a sound.

On the other hand, when the striking information is input from the DSP 22, the brush striking sound control means of the CPU 24 controls the waveform to be read, the filter coefficient, and the volume in accordance with the striking intensity indicated by the striking information.

Here, the process of generating a brush sound in the brush playing mode will be described in more detail with reference to FIGS. 17 and 18.

FIG. 17 shows a more detailed functional block diagram of the DSP 22, the CPU 24 and the tone generator IC 34. The detection signal detected by the head sensor 14 is A / D converted by the A / D converter 20. And input to the DC cut filter. The DC cut filter is a high-pass filter that removes a DC component,
The detection signal input to the DC cut filter has its DC component removed. The detection signal from which the DC component has been removed by the DC cut filter is input to the envelope detection circuit and the maximum value detection circuit.

The envelope detection circuit detects the envelope of the waveform of the input detection signal, and inputs the detected signal to a low-pass filter (LPF) that cuts high-frequency components. LP
By cutting the high-frequency component of the envelope with F and smoothing the envelope, the sound output becomes smooth.

Next, in order to suppress unnecessary sound generation at a weak level, a threshold setting circuit determines a threshold value, cuts a signal below the threshold value, and further performs a limiter process on the envelope by a limiter circuit.

Then, according to the output of the limiter circuit,
Controls the gain of the amplifier. This amplifier adjusts the level of the brush sound of the first PCM sound source for sampling and loop-reading the brush sound of the acoustic drum head rubbed by the brush.

On the other hand, the maximum value detection circuit to which the detection signal from which the DC component has been removed by the DC cut filter is inputted, detects the maximum value of the inputted detection signal and inputs it to the PCM tone control circuit. The PCM sound control circuit samples the sound of the second PCM sound source that samples the brush sound when the head of the acoustic drum is hit with the brush and reads out one shot in accordance with the input signal level (maximum value). Control.

That is, the PCM tone generation control circuit does not emit the second PCM sound source when the input signal level (maximum value) is lower than the predetermined level, but the input signal level (maximum value) is lower than the predetermined level. In the above case, the second PC
Make M sound source sound.

In the brush performance mode, the second signal is obtained according to the detection signal of the head sensor 14 when the brush 102 comes into contact with the head 12 ("velocity" in the example shown in FIG. 18). The brush sound of the 1 PCM sound source (a soft hit sound when the acoustic drum is rubbed by the brush) and the brush sound of the second PCM sound source (the strong hit sound when the acoustic drum is hit by the brush) are synthesized by an adder. Is output.

Note that the gain of the amplifier is controlled by the limiter circuit, and the brush sound by the first PCM sound source (a soft hitting sound when the acoustic drum is rubbed by the brush).
When the head 12 is strongly hit by the brush 102, the brush sound of the first PCM sound source (the weak sound of rubbing the acoustic drum with the brush) and the brush sound of the second PCM sound source ( The interference with the acoustic drum when the acoustic drum is hit by the brush is suppressed.

Next, the processing when the tuning mode is selected by operating the mode selection operator of the operator group 30 will be described. The tuning mode further has two modes of tuning and calibration. Here, the tuning in the tuning mode is to adjust the tension of the mesh material of the head 12. Thereby, the feeling of impact of the head 12 can be adjusted.

The group of operators 30 includes a mode selection operator for selecting a tuning mode, in addition to a mode selection operator for selecting each of a normal performance mode, a brush performance mode, and a tuning mode. Is provided, an operator for selecting between two modes, tuning and calibration, is provided.

First, the tuning in the tuning mode will be described. In this tuning,
The detection result of the head hitting position detecting means can be adjusted so as to be concentric with the center of the head 12. For this reason, the head hitting position information is displayed on the display device 32.

The player hits the head 12 with reference to the head hitting position information displayed on the display device 32, and engages the head 12 so that the head hitting position information displayed on the display device 32 is equal on a concentric circle. Tuning is performed by adjusting the screwing amount of the pin 54.

Next, the calibration in the tuning mode will be described. If the tension of the mesh material of the head 12 can be adjusted as in the above-mentioned tuning, the hit point position detected by the head hit point position detecting means is determined. It cannot be detected accurately.

Therefore, the tuning mode is set to the calibration mode of the tuning mode by the operator,
, The center portion thereof, and the center portion thereof are sequentially hit, thereby creating characteristic data for correction.

By creating the characteristic data for correction in this manner, the batting information obtained in the normal performance mode or the brush performance mode is corrected according to the characteristic data for correction, so that an accurate hit point can be obtained. Location information can be obtained.

The above-described embodiment may be modified as described below.

(1) As shown in FIG. 19, the head 12 is attached to one opening surface of the body 50, and the head of the acoustic drum (not shown in FIG. 19) is attached to the other opening surface. Good. In this case, when the head 12 is hit, the head of the acoustic drum on the back side resonates and sounds at an appropriate volume, so that the acoustic drum is closer to the acoustic drum than when the head 12 is attached to the body 50 alone. You can perform with your senses.

(2) As shown in FIG. 20, an annular film 112 may be attached to the outer periphery of the first net 56 and the second net 58 of the head 12. In this case, since the aperture ratio of the first net 56 and the second net 58 of the head 12 is smaller than in the above-described embodiment, the hitting sound is larger than in the above-described embodiment. For this reason, the performance can be performed with a feeling closer to that of an acoustic drum. Also, the first net 5 of the head 12
The impact sound volume can be controlled by changing the area of the film 112 attached to the sixth and second nets 58. Also, instead of attaching the film 112, the first mesh 56 is filled with an adhesive to fill the stitches.
And the second net 58 may be bonded together.

(3) The net material may be one, or three or more, without superimposing two plain weave nets.
The weave of the net is not limited to plain weave. When the net material is composed of a single net, use a triaxial net that balances the tension not only in the vertical and horizontal directions of the woven fiber but also in the diagonal direction when the net material is struck and hit. Is preferred.

(4) The shape of the cushion member 80 of the head sensor 14 is not limited to a truncated cone, but may be a truncated pyramid such as a pyramid.

(5) The configuration of the sound source is not limited to the above-described waveform readout type, and various types of sound sources can be used. Instead of a PCM sound source that emits a PCM sampling sound, a resonator such as an oscillator or an audio signal input from the outside may be used.

[0078]

Since the present invention is constructed as described above, the present invention has an excellent effect that it is possible to realize a striking detecting device in an electronic percussion instrument device which is excellent in striking feel and has a very low striking sound. .

Further, according to the present invention, the position of the hit detecting device which has been hit is detected, and the timbre is controlled based on the detection result. It has an excellent effect that it can be obtained.

Further, the present invention has an excellent effect that not only a playing method of striking the hit detecting device with a stick but also a playing method of rubbing or hitting the hit detecting device with a brush can be realized. To play.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of the impact detection device.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is a perspective view of a head.

FIG. 5 is an exploded perspective view of a head.

FIG. 6 is an explanatory diagram showing a case where the texture directions of the first net and the second net are oblique.

7A and 7B are explanatory views of a head sensor, wherein FIG. 7A is a view as viewed from an arrow A in FIG. 7B, FIG. 7B is a front view, and FIG. 7C is a view as viewed from an arrow C in FIG.

FIG. 8 shows a case where the head is hit with a stick.
It is sectional drawing corresponding to FIG.

FIG. 9 is a cross-sectional view corresponding to FIG. 3 when the rim is hit with a stick.

FIG. 10 is a cross-sectional view corresponding to FIG. 3 when a head is rubbed or hit with a brush.

FIG. 11 is a functional block diagram showing a configuration of a DSP in a normal performance mode.

FIG. 12 shows a CPU and a sound source I in a normal performance mode.
FIG. 3 is a functional block diagram showing a configuration of C.

13A and 13B are explanatory diagrams of characteristics of a head made of a net-like material, where FIG.
(B) shows an output waveform.

FIG. 14 is a functional block diagram showing a configuration of a head hitting point position detecting means of the DSP in a normal performance mode.

FIG. 15 is a functional block diagram showing a configuration of a DSP in a brush performance mode.

FIG. 16 is a functional block diagram showing a configuration of a CPU and a tone generator IC in a brush performance mode.

FIG. 17 is a more detailed functional block diagram of a DSP, a CPU, and a sound source IC in a brush performance mode.

FIG. 18 is a graph showing a relationship between velocity (output of a head sensor) and a volume level in a brush performance mode.

FIG. 19 is a perspective view corresponding to FIG. 2 and showing a modification of the impact detection device.

FIG. 20 is a perspective view corresponding to FIG. 2 and showing a modification of the impact detection device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Impact detection device 12 Head 14 Head sensor 16 Rim 18 Rim shot sensor 20 A / D converter 22 DSP 26 ROM 28 RAM 30 Operator group 32 Display device 34 Sound source IC 36 Waveform memory 38 D / A converter 50 Body 52 Engagement part 54 Engagement pin 56 First net 58 Second net 60 Frame 64 Hole 66 Edge 68 Rim hitting part 70 Cover member 72 Head / sensor support member 74 Output signal line 76 Piezoelectric element 78 Cushion Double-sided tape 80 Cushion member 100 Stick 102 Brush

Claims (4)

[Claims] 1. An electronic percussion instrument comprising: a head having a striking surface made of a net-like material; and a striking detecting means for contacting a center position of the head and detecting a striking on the head as an electric signal. The impact detection device in the device. 2. The striking detecting device for an electronic percussion instrument according to claim 1, wherein the net-like material is formed by stacking a plurality of nets formed by combining vertical and horizontal fibers, and the fibers of the adjacent nets are superposed on each other. A striking detection device in an electronic percussion instrument device, characterized by intersecting at an angle smaller than 90 degrees. 3. A striking detecting means for detecting a striking on a head having a striking face as an electric signal, and a tone control for inputting the electric signal detected by the striking detecting means and generating control information for forming a tone. An electronic percussion instrument device comprising: an information generating unit; and a tone signal forming unit configured to input control information from the tone control information generating unit to form a tone signal, wherein the tone control information generating unit is detected by the percussion detecting unit. A hitting position detecting means for detecting a hitting position of the head based on a half-wave of a rising portion of the electric signal, and generating control information according to a detection result from the hitting position detecting means. Electronic percussion instrument device. 4. The electronic percussion instrument according to claim 3, wherein the hitting position detecting means detects a hitting position of the head by measuring a length between zero crossings of a half-wave at a rising portion. Electronic percussion instrument device.