JP2003345349A - Electronic drum apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To give a visual display according with a beat mode to a pad body in an electronic percussion instrument which generates a music sound signal in response to detection of a beat to the pad body. <P>SOLUTION: Fixed contacts 62 and 64 and a LED light source 65 are provided on the upper face of a flexible substrate 6 of a circular pad storage part 1. Eight light emitting bodies, in total, which are transparent in a certain degree and have elasticity and are formed into bodies of revolution are arranged on the peripheral edge part of a pad outer surface body 2. Recessed faces 52a of light converging parts 52 of the light emitting bodies 5 are coated with a white paint 52c. Intensities of emitted light in light transmission parts 51 of the light emitting bodies 5 are changed by change of distances between the light converging parts 52 and the LED light source 65 at the time of a beat to the pad outer surface body 2. A mobile contact 61 is brought into contact with the fixed contact 62 to turn on a first switch SW1 in response to a beat having a certain degree of strength, and a mobile contact 63 is brought into contact with the fixed contact 64 turn on the switch SW2 together with the first switch SW1 in response to a beat having a higher strength. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sensor of a sensing unit when a hit is applied to a pad body by forming a pad body by connecting a sensing unit for sensing a hit to a pad skin body having a hit surface. The present invention relates to an electronic drum device that generates a tone control signal according to an output.

[0002]

2. Description of the Related Art Conventionally, an apparatus of this type is disclosed in, for example, Japanese Patent Laid-Open No. 6-175651 or Japanese Patent Laid-Open No. 9-29757.
There is one disclosed in Japanese Patent No. JP-A-6-1756
No. 51 discloses a structure in which a piezo-type piezoelectric sensor is fixed to a pad plate fitted in a pad rubber (pad skin body), and the pad plate and the base plate are joined to each other with a cushion material at the periphery of each plate. It has become. The piezoelectric sensor detects the vibration of the pad plate when the pad rubber is hit.

In Japanese Patent Laid-Open No. 9-297576, a pad plate is fixed to a pad skin, the pad skin is fixed to a case by an elastic holding member at the periphery of the pad skin, and the pad skin is welded to the periphery of the pad plate. The stud holds the sensor plate, and the piezo-type piezoelectric sensor is fixed to the sensor plate. Then, the impact applied to the pad skin is transmitted to the sensor plate via the pad plate and the stud, and the vibration of the sensor plate is detected by the piezoelectric sensor.

Generally, in this type of device, the piezoelectric type piezoelectric sensor as in the above two publications is mainly used in consideration of the expressiveness of sound volume (dynamic range). The reason is that the piezo-type piezoelectric sensor does not saturate for hitting fortissimo (a phenomenon in which the output is in a saturated state appears), and can give a difference in sound volume between hitting by forte and fortissimo. This is because the piezoelectric type piezoelectric sensor is the mainstream.

[0005]

However, the above-mentioned Japanese Unexamined Patent Publication (Kokai) No.
In the device of Japanese Patent Publication No. 175651, since the pad plate and the base plate are joined to each other via the cushion material at the peripheral edge thereof, the sensitivity becomes uneven depending on the hitting portion. For example, the sensitivity is low in the area immediately above the cushion material, and the sensitivity is better in the central portion than in the peripheral edge of the pad rubber. In addition, JP-A-9-297
The device of Japanese Laid-Open Patent Publication No. 576 is improved so as not to make the sensitivity uneven as much as possible. However, the holding structure of the pad body with respect to the case (fixing portion) is formed by an elastic holding body formed integrally with the pad skin body. It is structured so that it is fixed to the case at the part. Furthermore, the mutual positional relationship between the three studs (1a, 1b, 1c) holding the sensor plate and the four elastic holding bodies (5a, 5b, 5c, 5d) fixing the pad skin is not uniform. . For this reason, it is not enough to obtain a substantially uniform sensitivity wherever the player strikes.

Therefore, there is a demand for a device capable of obtaining the same output with the same striking force, regardless of the position of striking the pad surface.

On the other hand, the present inventor has proposed that a light emitting means is provided on the pad surface of an electronic drum or the like, and the light emitting position and the light emitting intensity are controlled according to the hitting position and the hitting strength of the pad surface ( Japanese Patent Application No. 10-66090). This makes it possible to confirm the visual information about the hit, and to easily check the hit position, hit strength, etc. by oneself or the teacher, which is useful for practice and contributes to quick progress. Furthermore, since the user can visually recognize his or her own performance mode, particularly the batting mode, during live performance, it is easy to perform a performance that impresses the audience.

However, as described above, the piezoelectric type piezoelectric sensor is suitable for detecting the hitting level, but is not suitable for detecting the hitting position or the like on the pad. It has stopped to the extent that the volume is controlled according to the hit level.

Further, in this case, if the structure of the pad body such as the above-mentioned conventional percussion instrument-type musical tone control device is adopted, information can be obtained according to the manner of hitting the pad surface even if the hitting level can be detected. However, the development from the viewpoint of controlling the light emission and the like well while maintaining a pronunciation pattern close to the ideal was still behind.

The output of the piezoelectric sensor is generally used to control, for example, the sound volume, which is one of the basic elements of a musical sound, but other musical sound elements can be controlled according to the mode of hitting. If you can, the variation of musical sounds will be rich.

Further, the apparatus disclosed in Japanese Patent Laid-Open No. 6-175651 has a structure in which the pad plate is joined to the peripheral edge thereof through a cushion material.
The device disclosed in the above publication has a structure in which the pad skin is fixed to the case by an elastic holder on the periphery of the pad skin. Therefore, each of them has a structure unsuitable for detecting the hitting position and hitting mode with respect to the pad skin and for obtaining information for controlling the musical tone element.

It is an object of the present invention to provide an electronic drum device capable of visually displaying a striking mode by causing a light emitting body to emit light.

[0013]

An electronic drum device according to claim 1 of the present invention is an electronic drum device for generating a musical tone signal in response to detection of a hit on a hit surface of a pad body, the electronic drum device being provided on the pad body. And a LED light source provided separately from the pad body, so that light emitted from the LED light source is visible from the surface of the light emitter through the light emitter. Characterize.

An electronic drum device according to a second aspect of the present invention is an electronic drum device which generates a musical tone signal in response to detection of a hit on a hit surface of a pad body, and emits light in response to detection of a hit to the pad body. And a LED light source provided separately from the pad body, and light emitted from the LED light source is visible from the surface of the light emitter through the light emitter. And

An electronic drum device according to a third aspect of the present invention is an electronic drum device which generates a musical tone signal in response to a hit detection on a hit surface of a pad body, and detects a hit on the case body and the pad body. The LED light source that emits light in accordance with the above, the light emitting area that is formed to be significantly smaller than the light emitting body, emits light toward the light emitting body, and the portion that fixes the pad body and the light emitting body, As said LE
It is characterized in that the light emitted from the D light source is visually recognized by being emitted from the surface of the light emitting body through the light emitting body.

An electronic drum device according to a fourth aspect of the present invention is an electronic drum device which generates a musical tone signal in response to a hit detection of a hit surface of a pad body, the hit detection of the case body and the pad body. The LED light source is provided below the pad body, and the LED light source emits light according to the LED light source, the LED light source emits light toward the light emitter, and a portion that fixes the pad and the light emitter. And

An electronic drum device according to a fifth aspect of the present invention has the structure of the first, second, third or fourth aspect, and further, the light emitting body includes a light reflecting material, and the light emitted from the LED light source is the light emitting material. It is characterized in that it is enhanced by the reflection effect of the light reflecting material so as to be visible from the hit surface of the pad body through the light emitting body.

An electronic drum device according to a sixth aspect of the present invention is an electronic drum device which generates a musical tone signal in response to a hit detection on a hit surface of a pad body, and emits light in response to a hit detection on the pad body. And a LED light source that emits light toward the light emitter, and by causing the LED light source to emit light in response to the impact of the impact surface of the pad body, the light emitted from the LED light source emits the light. An electronic drum device, which is visible through the body from the surface of the luminous body.

An electronic drum device according to a seventh aspect of the present invention has the structure of the first, second or sixth aspect, and further, the light emitting surface of the light emitting body is the surface of the pad body. To do.

An electronic drum device according to an eighth aspect of the present invention has the structure of the first, second, sixth or seventh aspect, and the light emitting surface of the light emitting body is located at a position lower than the surface of the central portion of the pad body. It is characterized by

An electronic drum device according to a ninth aspect of the present invention has the structure according to the first, second or sixth aspects, and is characterized in that the light emitting body is provided on the peripheral edge of the pad body.

An electronic drum device according to claim 10 of the present invention is
According to the present invention, the light emitting mode on the surface of the light emitting body is changed according to the striking mode of the hit surface of the pad body.

The electronic drum device according to claim 11 of the present invention is
An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, the light emitter being an elastic body that emits light in response to the hit detection on the pad body, and a lower peripheral portion of the pad body. And an LED light source disposed on the LED light source mounting substrate,
It is characterized in that light emitted from the LED light source is visible from the surface of the light emitting body through the light emitting body.

An electronic drum device according to claim 12 of the present invention is
An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, wherein an LED light source is provided on a lower surface of the pad body, and a surface of the board facing the pad body emits light when hitting the pad. Is provided.

An electronic drum device according to claim 13 of the present invention is
An electronic drum device that generates a musical tone signal in response to a hit detection on a hit surface of a pad body, the light emitting body emitting light in response to the hit detection on the pad body, and the pad body provided separately. The LED light source is provided, and the light emitted from the LED light source is supplied to the light emitter through an optical fiber.

According to the electronic drum device of the first to thirteenth aspects, it is possible to visually recognize the manner of hitting the pad body, and, for example, the one-on-one teaching effect of the drum is enhanced. Also, since the light emission can be seen from the surface of the pad body,
It can be easily seen even during performance.

Further, according to the electronic drum device of the eleventh aspect, since the light-emitting body is an elastic body, the size of the light-emitting body or a place for accommodating the light-emitting body may be rough, and the light-emitting body can be placed at a predetermined position. It is possible to arrange them without difficulty.

Further, according to the electronic drum device of the twelfth aspect, fixed contacts and the like can be arranged in addition to the LED light source on one common substrate instead of two substrates, so that the number of parts can be reduced. It also makes it easier to mount the board. Furthermore, since the positional relationship between the LED light source and the fixed contact is uniquely determined, both the sensing accuracy and the light emission accuracy of the light emitter are improved.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 5 is a top view of the electronic drum device according to the embodiment, in which the upper case 10 serving as the fixing portion includes four pad bodies 20 that form four large hit surfaces.
Three pad bodies 2 constituting a hit surface smaller than that
0'is provided. Speaker sound output grooves 30 are formed on the left and right of the upper case 10, and stereo sound can be generated. On the performer side of the upper case 10, an operation panel 40 equipped with switches, dials, a display, etc.
Are arranged. Further, a concave portion 50 is provided below the main body as shown by a broken line, and a connection terminal for connecting a lead wire or the like to an external sound system or the like is provided. In the following description, the pad body 20 is used as an example to describe each embodiment of the percussion instrument type musical sound control device, but the plurality of pad bodies 20 and 20 'may have the same structure, which will be described later. You may combine the thing of each Example suitably.

(First Embodiment) FIG. 1 is a side sectional view and a partially enlarged sectional view of a percussion instrument type musical tone control apparatus, FIG. 2 is a partial plan view of an upper case 10, and FIG. It is a top view of the sensing unit 3. Note that FIG.
5 is a sectional view taken along the line AA of FIG. 5, and corresponds to the sectional view taken along the line AA of FIGS. 2 and 3. 1 and 2 also show both the first embodiment and the second embodiment,
The movable contact 41 and the fixed contact 42 of FIG. 1 (B) and the fixed contact 42 of FIG. 2 are formed in the case of the second embodiment. In the first embodiment, the movable contact 41 and the fixed contact 4 are formed.
There is no 2.

The upper case 10 is made of ABS resin or the like, and has a pad accommodating portion 1 having a circular shallow recess for accommodating the pad body 20. In the pad accommodating portion 1, a sensor facing portion 11 formed in the shape of a thin disk in the center, an annular protrusion 12 annularly protruding from the outer periphery of the sensor facing portion 11, and extending to the outer periphery of the annular protrusion 12. The annular flat surface portions 13 are formed respectively. Between the sensor facing portion 11 and the annular protrusion 12, a sensor fixed body 31 described later is provided.
Screw holes 14 for fixing the lead wire 33a of the piezoelectric sensor 33 are formed in a part of the sensor facing portion 11, and screw holes 14 for fixing the lead wire 33a of the piezoelectric sensor 33 are formed.

As shown in FIG. 1, the pad body 20 is composed of a pad skin body 2 and a sensing unit 3, and the sensing unit 3 is composed of a sensor fixing body 31, a radial pressing portion 32 and a piezoelectric sensor 33. ing.

The pad skin 2 is made of an elastic material such as rubber and has a substantially disk shape, and the surface to be hit 21 on the surface is slightly raised toward the center. Further, an annular rim portion 22 extending to the back side is formed on the peripheral edge, and the protrusion 23 is formed on the entire outer surface of the rim portion 22.
(See FIG. 1B) is formed. As indicated by the alternate long and short dash line in FIG. 2, the outer circumference of the rim portion 22 has a diameter slightly smaller than the inner diameter of the pad accommodating portion 1, and the pad skin body 2 is disposed inside the pad accommodating portion 1. Can be accommodated in the inner surface 1 of the pad accommodating portion 1
It comes into contact with a (see FIG. 1 (B)). As a result, the ridges 23 form the pad skin body 2 and the pad housing portion 1.
It plays the role of preventing dust and the like from entering through the gap between.
Further, a large number of small protrusions 24 are provided on the back surface of the pad skin body 2.
And the circumference 8 is formed near the inner side of the rim portion 22.
Elastic projections 25 are formed at eight equal portions. The elastic protrusion 25 has a constricted portion 25a whose side surface has a reduced diameter and a hook portion 25b having a larger diameter than the constricted portion 25a.

As shown in FIG. 3, the sensor fixing body 31 and the radial pressing portion 32 of the sensing unit 3 are formed into a thin disk shape by using stainless steel or the like having a high spring property. The sensor fixing body 31 is provided with screw holes 31a at three positions corresponding to the screw holes 14 of the pad accommodating portion 1, and a positioning protrusion 31b is formed at the center. The radial pressurizing portion 32 has three holes corresponding to the screw holes 31a of the sensor fixing body 31 and through holes 32a having a diameter larger than the screw holes 31a and the head of the screw 17 (FIG. 1). Further, holes 32b for fixing to the pad skin body 2 are formed at eight locations corresponding to the elastic protrusions 25 of the pad skin body 2. Further, a bulging portion 32c bulging into a thin truncated cone shape is formed in the central portion of the radial pressing portion 32, and a positioning hole 32d is formed in the center thereof.

The sensor fixing body 31 and the radial pressing portion 32 are
The bulging portion 32c of the radial pressing portion 32 is brought into contact with the sensor fixing body 31, and the positioning protrusion 31b is provided with the positioning hole 32.
They are fixed to each other by being fitted to d and spot-welded at three points (circle-dot chain line in FIG. 3) of the circumference of the bulge 32c. The piezoelectric sensor 33 is fixed to the central surface of the sensor fixing body 31 after spot welding.

Now, the assembly of this device will be described. First, the screw fixing holes 31a of the sensor fixing body 31 and the through holes 32a of the radial pressing portion 32 are aligned with each other, and the sensor fixing body 31 and the radial pressing portion 32 are integrally spot-welded with their facing surfaces aligned. Piezoelectric sensor 3
3, the metal surface side and the sensor fixing body 31 are attached to face each other. As a result, the piezoelectric sensor 33, the sensor fixing body 31, and the radial pressing portion 32 are integrally molded. Then, the lead wire 33a of the piezoelectric sensor 33 is attached to this.

Next, the lead wire 33a is pulled out from the opening 15 to the inside of the main body, and the sensor fixing body 31 is attached to the pad accommodating portion 1.
Of the pad accommodating portion 1 while being fitted inside the annular protruding portion 12 of the pad 17 and through the through hole 32a of the radial pressing portion 32 and the screwing hole 31a of the sensor fixing body 31.
It is screwed into the screw holes 14 of (3 places), and the sensor fixing body 31 is attached in the pad accommodating portion 1. Next, the pad skin 2
The elastic skin 25 is aligned with the position of the hole 32b of the radial pressing portion 32, and the pad skin body 2 is covered on the radial pressing portion 32.
Then, the pad surface body 2 is pressed from the hit surface 21 side,
The elastic protrusion 25 is pressed into the hole 32b. As a result, the hook portion 25b at the tip of the elastic protrusion 25 expands again on the annular flat surface portion 13 side through the hole 32b, so that the radial pressing portion 32 is fixed to the pad skin body 2 at the peripheral edge portion 32A.

The large number of small projections 24 formed on the back surface of the pad skin body 2 have the following functions. Each small protrusion 2
4 is when the radial pressing portion 32 and the pad skin body 2 are fixed by press-fitting the elastic protrusions 25 into the radial pressing portion 32,
The small protrusions 24 are provided so as to be constantly in pressure contact with the upper surface of the radial pressing portion 32. That is, the elastic force of the small projections 24 ensures the integration of the pad skin body 2 and the radial pressing portion 32, and also the radial pressing portion 32 at the time of smashing.
Even if a small amount is deformed, the small protrusion 24 absorbs the deformation.
As a result, the striking force on the pad skin body 2 is faithfully transmitted to the radial pressing portion 32.

As described above, the pad body 20 is formed by connecting the sensing unit 3 to the pad skin body 2 having the hit surface 21, and the pad body 20 is a fixing portion on the sensing unit 3 side, which is a top case. It has a structure attached to 10. In addition, the sensing unit 3
A piezoelectric sensor 33 is provided at the center of the radial pressurizing portion 32 in the radial direction, and the piezoelectric sensor 33 is floated by a sensor fixing body 31 (elastic body) with respect to the upper case 10 (fixing portion).
The radial pressing portion 32 has a peripheral edge portion 32A at which the pad skin 2
The structure is fixed to.

FIG. 4 is an operation diagram of the embodiment, and the operation of the embodiment will be described based on the figure. Note that FIG. 4 shows a side cross-section corresponding to the arrow BB in FIGS. 2 and 3, and in the figure, the thickness and the like are exaggerated and details are omitted for the sake of easy understanding. FIG. 4 (A) shows a state where no impact is applied. FIG. 4 (B) shows a state in which a part of the peripheral edge of the pad skin body 2 is hit (arrow), and the radial pressurizing portion 32 is deformed while the bulging portion 32c itself is also deformed. A pressure is applied to the central portion of the sensor fixing body 31 (displacement amount A). Then, the sensor fixing body 31 elastically deforms so that the piezoelectric sensor 33 side swells.

FIG. 4C shows a state in which a stronger impact is applied than in the state of FIG. 4B, and the elastic deformation of the sensor fixing body 31 becomes large (displacement amount B, B> A). However, the lower surface of the hook portion 25b of the elastic projection 25 and the lower surface of the rim portion 22 contact the annular flat surface portion 13 of the pad accommodating portion 1, and the sensor fixing body 3
1 does not deform any more. That is, the elastic protrusion 25
And the rim portion 22 work together to function as a stopper. This prevents the piezoelectric sensor 33 from being excessively deformed. FIG. 4 (D) shows a case where the center of the pad skin body 2 is hit, and in this case, the pad skin body 2 is displaced so as to be constant as a whole (C1 = C2). Then, the sensor fixing body 31 is deformed and elastically deformed so that the piezoelectric sensor 33 side swells around the central portion.

In this way, the piezoelectric sensor 33 is deformed together with the sensor fixing body 31, and the piezoelectric sensor 33 generates piezoelectric electricity due to the piezoelectric effect and is output from the lead wire 33a. The time series operation for one hit is as follows. When the pad skin 2 is hit, the displacement of the pad skin 2 shifts, for example, from FIG. 4 (A) to FIG. 4 (B) or FIG. Back a little,
By this process, alternating vibration is repeated. That is, the vibration is attenuated while repeating the states of FIGS. 4A and 4B, and the output signal corresponding to the vibration is obtained from the piezoelectric sensor 33. Depending on the way of striking, instead of alternating vibration, one reciprocal displacement is obtained, and a pulse-like signal in which the displacement and the vibration substantially match is obtained. In this case, the displacement signal has different polarities for the going and returning, but only the "going (in the case of FIG. 4B)" is detected. Then, as the processing of the output signal of the piezoelectric sensor 33, for example, the envelope of the output signal is detected, and the trigger signal and the level signal are detected from the envelope to control the pronunciation of a musical sound.

As described above, since the radial pressing portion 32 and the sensor fixing body 31 are both radial (circular in the above example) and are fixed at the central portion thereof, the pad skin body 2
The striking force applied to (and the radial pressing portion 32) is concentrated on the central portion of the radial pressing portion 32, and the force is transmitted from there to the central portion of the sensor fixing body 31. This allows
The sensor fixing body 31 is deformed centering on the central portion thereof, and the piezoelectric sensor 33 is also deformed similarly. Therefore, if the striking force is applied in the same degree, the piezoelectric sensor 33 can obtain the same output signal regardless of which portion of the pad skin body 2 the striking force is applied. As a result, even if the vibration input is input from any direction of the pad body 20 except the pad accommodating portion 1 (attachment portion), a responsiveness corresponding to the input level is provided.

When the output of the piezoelectric sensor 33 is about noise, the sound generation is started when the output of the piezoelectric sensor 33 exceeds a predetermined threshold value so as not to generate the sound.

In the above-described first embodiment, the elastic projection 25 and the rim portion 22 formed on the pad skin body 2 constitute the lower limit stopper, but only the elastic projection 25 or the rim portion 22. You may comprise a stopper with.

(Second Embodiment) As described above, FIGS. 1 and 2 also show the second embodiment. In the second embodiment, as shown in FIG. The movable contact 41 is formed on the lower surface of the portion 25a by printing a conductive member or the like, and the fixed contact 42 is formed on the annular flat surface portion 13 of the pad accommodating portion 1 at a position corresponding to each movable contact 41 of the eight elastic protrusions 25.
Are formed (see FIG. 2). The movable contact 41 corresponding to the fixed contact 42 constitutes a contact switch. In addition, the fixed contact 42 is formed on a flexible substrate having a donut disk shape, and the flexible substrate is attached to the annular flat surface portion 1.
Alternatively, the fixed contact 42 may be disposed corresponding to the movable contact 41 by disposing the fixed contact 42 on the movable contact 41.

The movable contact 41 and the fixed contact 42 are as shown in FIG. 9, for example. The fixed contacts 42 are two fork-type fixed contact patterns 42a and 42b which are printed and wired so that the fork portions are interleaved with each other, and one fixed contact pattern 42a is connected to a common line with another switch. The other fixed contact pattern 42b is connected to a detection circuit or the like as a unique element indicating this switch. In addition, the movable contact 4
Reference numeral 1 denotes a circular shape formed on the spherical lower surface of the hook portion 25a of the elastic protrusion 25. When the hook portion 25a contacts the annular flat surface portion 13 and acts as a stopper, the hook portion 25a is elastically deformed. As a result, the movable contact 41 is brought into contact with the fixed contact 42 as a circular contact surface, as shown by the broken line in FIG. 9B. As a result, the fixed contact pattern 42
The a and 42b are turned on and the switch is turned on. That is, when the impact is small, for example, as shown in FIG. 4 (B), the elastic protrusion 25 does not come into contact with the annular flat surface portion 13, so the switch does not turn on, but when the impact is large, the elastic protrusion 25 does not.
Comes into contact with the annular flat surface portion 13, and the switch is turned on.
Therefore, the on state of this switch is detected to control the musical sound.

In the above embodiment, the case where the movable contact 41 and the fixed contact 42 constitute a one-stage switch has been described.
For example, a movable contact 43 as shown in FIG. 10A and a fixed contact 44 as shown in FIG.
2 as one set, the movable contact 43 and the fixed contact 44 as one set, and 2
You may comprise a switch of steps. The intersections of the fixed contact patterns 44a and 44b can be formed by applying resist or by forming through holes and bridges. In the case of this two-stage switch, the movable contact 41 comes into contact with the fixed contact 42 by a certain amount of impact to turn on the first-stage switch, and when the impact is stronger, the hook portion 25a elastically deforms and the outer movable contact 43. Contacts the fixed contact 44, and
The switch in the first stage turns on.

Next, an example of tone control based on the operation of the above switch will be described. In addition, each fixed contact 42 is shown in FIG.
, The eight switches are distinguished by S1 to S8. The player-side (front) switch corresponds to S5, the right-hand switch corresponds to S3, and the left-hand switch corresponds to S7. Further, in each of the following control examples (1) to (4), the basic musical tone level, which is one of the basic elements of the musical tone, is controlled corresponding to the output signal of the piezoelectric sensor 33 as in the conventional case.

The timbre is controlled by controlling the timbre filter according to the ON state of the four switches S1, S3, S5, S7. For example, when the switch S7 is on, the timbre is the darkest timbre (tone with few harmonic components), and when the switch S3 is on, it is the brightest timbre (tone with many harmonic components). When the switch S1 is on or the switch S5 is on, the tone color has an intermediate brightness.

The tone color is controlled according to the ON state of the eight switches S1 to S8. The brightness of the generated tone color is set in advance in stages, and when any one of the switches S1 to S8 is turned on, the tone color is made brighter by one stage.
The second one turns it one step brighter, and eight turns it the brightest. In order to change the brightness of this timbre stepwise, for example, the cutoff frequency of the timbre filter may be switched stepwise. In addition, it is preferable to use some kind of switch on the operation panel or the like so that the tone color can be controlled to be brighter or darker.

Similarly to the above, the volume level is controlled stepwise in accordance with the number of the eight switches S1 to S8 turned on. The control of the volume level means that the piezoelectric sensor 3
3 is to give a further volume increment to the basic volume level determined according to the output of 3. Also,
Also in this case, it is preferable to use the other switches together so that the volume level can be switched between stepwise increase and stepwise decrease.

Speakers are arranged at the front, rear and left and right of the electronic drum device of the embodiment, and the switch S1 is used.
The panning control is performed by this speaker in response to the turn-on of S8. For example, when the switch S1 is turned on, the sound of the front speaker is emphasized or only the front speaker is sounded. Similarly,
When the switch S7 is turned on, the left speaker is controlled, when the switch S5 is turned on, the front speaker (speaker of the main body) or the rear speaker, and when the switch S3 is turned on, the right speaker is emphasized or pronounced accordingly. With regard to the switches S2, S4, S6 and S8, the sound image localization is set in the direction of the turned-on switch. Also, switch S
When all three of S1, S8, and S7 are on, control is performed according to the on combination of a plurality of switches, such as control to emphasize directivity in the S8 direction more than when only S8 is on. Good.

At the time of sounding, a sound is generated when the output of the piezoelectric sensor 33 exceeds a predetermined threshold value, but after a predetermined time from the time when this threshold value is exceeded until the time when the sound can be reproduced again (30 to 100 ms or less). If any one or more of the switches is turned on, the sound is a heavy sound. For example, in the sound of the snare drum, only the sound due to the vibration of the skin is usually generated, but the heavy sound is to mix the sound of the reverberation line (snappy) on the back side of the drum with the sound of the skin. Also,
In the case of the two-stage switch, it is possible to control so as to increase the degree of mixing of heavy sounds by turning on the second-stage switch.

As described above, the switches S1 to S8 are turned off / on when the distance between the hit surface 21 of the pad skin 2 and the annular flat surface portion 13 (that is, the upper case 10 as the fixed portion).
Distance information), and controls musical tone elements other than the volume level (one of the basic musical tone elements) based on this variation information. Further, in the case of the two-stage switch, each state in which the two-stage switch is off, the first stage is on, and the second stage is on also corresponds to the distance change information.

(Third Embodiment) FIG. 6 is a partial cross-sectional view of a percussion instrument type musical tone control apparatus of the third embodiment, and FIG. 7 is a plan view of a pad skin body in the third embodiment. In the above, the same elements as those in the first embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. In this third embodiment, the striking mode is visually displayed by causing the light-emitting body 5 arranged on the peripheral portion of the pad skin body 2 to emit light. The structure is similar to the example. That is, FIG. 6 corresponds to a cross section taken along the line CC of FIG.
The cross section taken along the line AA of the pad skin body 2 shown in FIG. 2 and taken through the elastic protrusion 25 has the same structure as that of the first embodiment shown in FIG.
Further, the structures of the pad skin body 2 and the sensing unit of the third embodiment are also the same as the pad skin body 2 and the radial pressing portion 3.
Holes 2a and 32e for fitting the light emitting bodies 5 into the respective 2 (FIG. 6)
The structure is the same as that of the first embodiment except that is formed.

On the annular flat surface portion 13 of the pad accommodating portion 1, there is arranged a donut disk-shaped flexible substrate 6 which is aligned with the annular flat surface portion 13, and the first and second flexible substrates 6 are provided on the upper surface thereof. Fixed contacts 62, 64 and LE
A D light source 65 is provided. The LED light source 65 emits light at a predetermined brightness level, whose emission brightness is controlled by a drive circuit (not shown).

A total of eight light-emitting bodies 5 are provided between the elastic protrusions 25 on the peripheral portion of the pad skin body 2, and a total of eight light-emitting bodies 5 can transmit the light emitted from the LED light source 65. It is made of a material such as rubber which is transparent and elastic to a certain extent. The overall shape of the light emitting body 5 is a substantially rotating body (excluding the upper end portion) obtained by rotating the cross section of FIG. 6 around the vertical center line of the light emitting body 5.
The light guiding and emitting portion 51 having a substantially columnar shape, the light collecting portion 52 having a diameter larger than that of the light guiding and emitting portion 51, and the leg portion 53 extending from the lower edge of the light collecting portion 52 are integrally formed. .
Then, the light emitter 5 connects the light guide light emitting unit 51 to the radial pressing unit 3.
The hole 32e of No. 2 and the hole 2a of the pad skin 2 are penetrated and attached to the pad skin 2 by adhesion or the like.

A dome-shaped concave surface 52 is provided on the lower surface of the light collecting portion 52.
a is formed, and the concave surface 52a and the LED light source 65 are formed.
A hollow portion 52b is formed between the two, and a white paint 52c is applied to the lower part of the concave surface 52a. Also, the legs 53
Is the first skirt portion 53a and the second skirt portion 53.
b, the third skirt portion 53c and the flange portion 53d, the light emitting body 5 has the flange portion 53d in contact with the upper surface of the flexible substrate 6, and the light collecting portion 52 and the leg portion 53 in the fixed contacts 62, 64 and the LED light source. It is arranged so as to cover 65.

On the back surface between the first skirt portion 53a and the second skirt portion 53b, a first movable contact 61 is provided so as to face the first fixed contact 62.
In addition, the second skirt portion 53b and the third skirt portion 53
The second movable contact 63 is provided on the back surface between the portions c so as to face the second fixed contact 64. The movable contact 61 and the fixed contact 62 form a first switch SW1, and the movable contact 63 and the fixed contact 64 form a second switch SW2.

With the above structure, the skirt portions 53a, 53b, 53c of the leg portion 53 are elastically deformed, so that when the pad skin body 2 is hit, the light guide light emitting portion 51 and the light collecting portion 52 are moved to the pad skin body 2. Along with the striking direction (vertical direction)
It is possible to move to. As a result, the pad skin 2
The distance between the hit surface 21 and the annular flat surface portion 13 (that is,
A change in the distance from the upper case 10 serving as the fixed portion results in a change in the distance between the condenser 52 and the LED light source 65. This change in the distance appears as a change in the light emission intensity of the light guide / light emitting unit 51 as described later. Further, when the impact is strong to some extent, the movable contact 61 comes into contact with the fixed contact 62 and the first switch SW1 is turned on, and when the impact is stronger, the fixed contact 64 is moved to the movable contact 63. Contact with the second switch SW2 together with the first switch SW1.
Is also turned on.

Here, a part of the light from the LED light source 65 is incident on the concave surface 52a of the condensing portion 52 of the light emitting body 5, and this incident light is guided upward by the light guiding and emitting portion 51, and this light guiding is performed. Since the light is emitted from the upper end surface 51a of the light emitting portion 51, the pad skin 2
The luminous bodies 5 appear to shine at eight places on the periphery of the. Further, when the pad skin body 2 is hit, the LED light source 65 causes the hollow portion 5 to
The light emitted from the LED light source 65 is prevented from escaping in all directions by being surrounded by 2b almost completely, and combined with the reflection effect of the white paint 52c, the light collecting efficiency by the light collecting unit 52 is enhanced. this is,
This is because the solid angle formed by the concave surface 52a with the LED light source 65 at the center becomes large, and the luminous flux entering the concave surface 52a from the LED light source 65 increases. As a result, the brightness of the upper end surface 51a of the light guide and emission unit 51 is higher when the pad skin body 2 is hit than when it is not hit.
Moreover, since the brightness of the upper end surface 51a changes according to the strength of the hit, the strength of the hit can be visually displayed, and the performer or the like can visually recognize it. In this way, the change in brightness at the time of impact is realized only by the mechanical system, and the structure is being simplified.

The third embodiment operates as follows. First, the volume level is controlled according to the output of the piezoelectric sensor 33 as in the first and second embodiments. Further, the first and second switches SW1 and SW2 are not used, and the LED light source 65 is always in a light emitting state. Alternatively, it may be constantly blinking. In this state, the eight light-emitting bodies 5 provided on the peripheral portion of the pad skin body 2 are always dimly lit when not hitting, but at the time of hitting, the light-emitting body 5 depends on the hitting position and the hitting strength. The mode of the light emission brightness of is changed. This indicates that when the entire pad skin 2 is viewed, the display mode changes depending on the playing mode.

The emission intensity of each light-emitting body 5 becomes strong when the distance between the hitting surface 21 where the light-emitting body 5 is arranged and the LED light source 65 becomes short, and becomes weaker when the distance is far. Further, as described above, the pad skin body 2 is held at the central portion of the upper surface case 10 by the radial pressing portion 32 and the sensor fixing body 31, so that the pad skin body 2 is not struck at one side edge portion. When added, the part to which the hit is applied sinks, but the opposite side tends to slightly rise.

Therefore, for example, as shown in FIG. 11, when a hit is applied to the peripheral portion of the pad skin body 2, the light emission display H1 by the light emitter 5 at the hit position (position around the stick) is given at the moment of hit. It becomes the brightest, and the luminescent display H2 on the opposite side of the luminescent display H1 becomes dark. Further, the intermediate light-emission display H3 has medium brightness. Further, when a strike is applied to the center of the pad skin body 2, the entire luminescent display becomes bright only at the moment of the strike. It should be noted that if the hitting position is pressed all the time, the above display mode continues. Furthermore, when two sticks are repeatedly hit, the light emission display near each stick becomes bright at the moment of striking, and the light and shade of the light emission display at the positions of the two sticks are alternately repeated, and the pitch of the consecutive hits (pronounced It can be visually recognized by the light emission mode in which the interval) is bright and dark. Therefore, for example, the one-on-one teaching effect of the drum is enhanced.

Next, when the first switch SW1 and the second switch SW2 are also used, for example, the following control is performed. In each of the following control examples (1) to (4), the basic tone level, which is one of the basic elements of the tone, is controlled in accordance with the output signal of the piezoelectric sensor 33, as described above. In addition, the circuit shown in FIG.
LED light source 65 corresponding to W1 and SW2 (switch SW
LED light source 6 at the same position of light emitter 5 as SW1 and SW2
The brightness of 5) is controlled by turning on / off the switches SW1 and SW2. That is, when switch SW1 is on, L
When the ED light source 65 is turned on and the switch SW2 is further turned on, it is brightly turned on. Also, the switches SW1 and SW2
The ON / OFF signal of is detected by the CPU or the like to control a tone such as a tone color.

For example, each set of eight switches SW1 and S
Turning on the switch SW1 of W2 brightens the tone color by one step as in the second embodiment. In addition, among the eight sets of switches SW1 and SW2, SW1 or SW2
Regardless, the control is performed such that the harmonic component is simply increased each time the number of ONs increases. Also in this case, it is preferable to use another switch in combination so that the tone color can be controlled to be brighter or darker.

Of the eight sets of switches SW1 and SW2, regardless of SW1 or SW2, the volume level is controlled stepwise by simply turning on the number, as in the second embodiment. Also in this case, it is preferable to use the other switches together so that the volume level can be switched between stepwise increase and stepwise decrease.

The panning control is performed in the same manner as in the second embodiment according to the ON state of the switches SW1 and SW2 of each of the eight groups. However, when both SW1 and SW2 are on, the directivity in the direction of the set of switches is further emphasized.

Of the switches SW1 and SW2 of each set,
When even one set has both SW1 and SW2 turned on, a heavy sound is generated.

As described above, in this embodiment, the hit surface 21 of the pad skin 2 and the annular flat surface portion 1 of the pad accommodating portion 1 are arranged.
Based on the change in the distance from the pad 3, the visual information according to the striking mode of the pad body 20 is obtained. Further, at the position of each light-emitting body 5, the turning on / off of the switches SW1 and SW2 corresponds to the change information of the distance between the hit surface 21 and the annular flat surface portion 13, and based on this change information, a musical tone is generated. The musical tone elements other than the volume level, which is one of the basic elements of, are controlled.

(Fourth Embodiment) FIG. 8 is a partial cross-sectional view of a percussion instrument type musical sound control apparatus according to the fourth embodiment. In FIG. 8, the same elements as those in the above-mentioned embodiments are designated by the same reference numerals. Detailed description is omitted. In the fourth embodiment, the flexible substrate 6 and the switches SW1 and SW2 of the third embodiment are omitted, and instead of the LED light source 65, the light emitting body 8 is irradiated with light by the optical fiber 7. The fourth embodiment also has the same structure as that of each of the above-mentioned embodiments except for the portion related to the light emitter 8 and the optical fiber 7, and FIG.
The structure of the pad skin 2 and the sensing unit corresponds to the cross section taken along arrow C, and is the same as that of the third embodiment.

Eight light emitters 8 are provided in the peripheral portion of the pad skin 2 instead of the light emitter 5 of the third embodiment. Like the light emitter 5, a transparent material such as rubber having elasticity is used. Made of The entire shape of the light-emitting body 8 is substantially the same as that of the light-emitting body 5, and the light-guide light-emitting portion 81, the light-collecting portion 82, and the leg portion 83 having a substantially cylindrical shape are integrally formed. The holes 32e of the radial pressurizing portion and the holes 2a of the pad skin body 2 are penetrated and attached to the pad skin body 2 by adhesion or the like. However, unlike the light emitting body 5, the leg portion 83 is one skirt portion 8 that is elastically deformed when the pad skin body 2 is hit.
3a and a flange portion 83b.

A fiber attachment hole 16 is formed in the annular flat surface portion 13 of the pad accommodating portion 1, and a fiber holding member 71 for holding the tip of the optical fiber 7 is fitted into and bonded to the fiber attachment hole 16. It is attached by. The side surface of the fiber holding member 71 may be provided with snap means so that it can be attached to and detached from the fiber attachment hole 16 (top case 10). The optical fiber 7 is pulled out from the fiber mounting hole 16 into the main body on the back side of the front case 10. This optical fiber 7 has an annular one-sided portion 13
It is also provided in the other 7 places with the same structure, and a total of 8
The optical fibers 7 of a book are bundled and led to one LED light source 72.

The optical fiber 7 is attached to the fiber holding member 71 as follows. As shown in FIG. 13, the tip of the optical fiber 7 is inserted into the hole 71a of the fiber holding member 71, and the tip of the optical fiber 7 is pulled in slightly inside the peripheral edge of the hole 71a (FIG. 13 (A)). . Then, one or two drops of liquid adhesive having the same refractive index as that of the optical fiber 7 is dropped on the tip of the optical fiber 7 (FIG. 13 (B)). As a result, the adhesive slightly enters the gap between the hole 71a and the optical fiber 7 to bond the optical fiber 7 and the fiber holding member 71, and the hemisphere is adhered to the tip of the optical fiber 7 and the inner periphery of the hole 71a by the adhesive. Lens part 73 (Fig. 13 (C))
Can be formed. The lens portion 73 radially emits the light guided by the optical fiber 7.

The LED light source 72 has its emission brightness controlled by a drive circuit (not shown), and when the output of the piezoelectric sensor 33 reaches a predetermined threshold value, that is, when a sound is emitted, this LED is used.
The light source 72 emits light at a constant brightness level. And LE
Light is emitted from the D light source 72 to the eight optical fibers 7, and light is emitted from the lens portion 73 of the end portion of the optical fiber 7 on the side of the light emitter 8 to the condensing portion 82 of the light emitter 8. As a result, the upper end surface 81a of the light guiding and emitting section 81 emits light.

The fourth embodiment operates as follows. Note that the volume level is controlled based on the output of the piezoelectric sensor 33, as in the above embodiments. In the fourth embodiment, when a predetermined level of impact such that the output of the piezoelectric sensor 33 exceeds the threshold value is applied, each lens portion 73 of the eight optical fibers 7 emits light with a constant brightness. However, as in the case of the third embodiment shown in FIG. 11 described above, the luminous display near the striking position becomes brightest, and the luminous display far from the striking position becomes dark. When the hitting intensity is high, the display is bright, and when the striking intensity is low, the display is dark. In this way, it is possible to visually recognize the manner of hitting. Even in the case of this embodiment, the specification may be such that the light always emits.

Also in the fourth embodiment, the movable contact is provided on the lower surface of the light collecting portion 82 of the light-emitting body 8 and the fixed contact is provided on the annular flat surface portion 13 to form the switch. The same control as is possible.

In each of the above-mentioned embodiments, the sensor fixing body and the radial pressing portion are circular, but for example, a hard plate material is arranged on the back surface of the pad skin body 2 so that the back surface of the pad skin body 2 is substantially entirely covered. If it is reinforced, the sensor fixing body and the radial pressurizing portion may have a substantially rotationally symmetrical shape such as a triangle, a square, ..., A polygon, a circle, a Y shape, a star shape, or the like.

[0080]

According to the electronic drum device of the first to thirteenth aspects of the present invention, the manner of hitting the pad body can be visually ascertained, and the one-on-one teaching effect of the drum is enhanced. Further, since the light emission can be visually recognized from the surface of the pad body, it can be easily visually recognized even during the performance.

Further, according to the electronic drum device of the eleventh aspect of the present invention, since the light emitting body is an elastic body, the size of the light emitting body and the place for accommodating the light emitting body may be rough, and the light emitting body is It is possible to arrange the device at a predetermined position without difficulty.

Further, according to the electronic drum device of the twelfth aspect of the present invention, L is not formed on two substrates but on one common substrate.
Since fixed contacts and the like can be provided in addition to the ED light source, the number of parts can be reduced, and the work of mounting the board is also simplified. Furthermore, since the positional relationship between the LED light source and the fixed contact is uniquely determined, both the sensing accuracy and the light emission accuracy of the light emitter are improved.

[Brief description of drawings]

FIG. 1 is a side sectional view and a partially enlarged sectional view of a percussion instrument type musical sound control apparatus according to first and second embodiments of the present invention.

FIG. 2 is a partial plan view of an upper case of the electronic drum device according to the first and second embodiments.

FIG. 3 is a plan view of a sensing unit in the percussion instrument-type musical sound control device of the first and second embodiments.

FIG. 4 is an operation diagram of a percussion instrument type musical sound control device of each embodiment.

FIG. 5 is a top view of an electronic drum device to which the percussion instrument type musical sound control device of each embodiment is applied.

FIG. 6 is a partial cross-sectional view of a percussion instrument type musical sound control device of a third embodiment.

FIG. 7 is a plan view of a pad skin body according to a third embodiment.

FIG. 8 is a partial sectional view of a percussion instrument type musical sound control device of a fourth embodiment.

FIG. 9 is a diagram showing an example of a movable contact and a fixed contact of a one-step switch according to a second embodiment.

FIG. 10 is a diagram showing an example of a movable contact and a fixed contact of a two-step switch in the second embodiment.

FIG. 11 is a diagram showing an example of light emission display when hitting a pad skin in the third and fourth embodiments.

FIG. 12 is a diagram showing an example of an LED light source drive circuit using first and second switches in a third embodiment.

FIG. 13 is a diagram illustrating a method of attaching an optical fiber to a fiber holding member according to a fourth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Pad accommodating part, 2 ... Pad skin, 3 ... Sensing unit, 10 ... Upper case, 20, 20 '... Pad body, 21 ... Hit surface, 32A ... Peripheral part, 41 ... Movable contact, 42 ... Fixed contact , 65, 72 ... LED light source

Claims (13)

[Claims] 1. An electronic drum device for generating a musical tone signal in response to a hit detection of a hit surface of a pad body, wherein the light emitter provided on the pad body and the pad body are provided separately. And an LED light source, wherein light emitted from the LED light source is visible from the surface of the light emitter through the light emitter. 2. An electronic drum device for generating a musical tone signal in response to a hit detection of a hit surface of a pad body, the light emitting body emitting light in response to the hit detection of the pad body, and the pad body. An electronic drum device, comprising: an LED light source provided separately, wherein light emitted from the LED light source is visible from the surface of the light emitter through the light emitter. 3. An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, comprising: a case body; a light emitting body which emits light in response to the hit detection of the pad body; The LED light source, which has an area significantly smaller than that of the light-emitting body, emits light toward the light-emitting body, and a portion that fixes the pad body and the light-emitting body. An electronic drum device characterized in that the light is emitted from the surface of the light emitting body through the light emitting body so as to be visually recognized. 4. An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, comprising: a case body; and a light-emitting body that emits light in response to the hit detection on the pad body. An electronic drum device, comprising: an LED light source that emits light toward a light emitting body; and a portion that fixes the pad and the light emitting body, wherein the LED light source is provided below the pad body. 5. The light-emitting body further includes a light-reflecting material, and light emitted from the LED light source is enhanced by a reflection effect of the light-reflecting material and is visually recognized from a hit surface of the pad body via the light-emitting body. The electronic drum device according to claim 1, 2, 3 or 4, wherein the electronic drum device is made possible. 6. An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, comprising: a light-emitting body which emits light in response to the hit detection on the pad body; And a LED light source that emits light, and the light emitted from the LED light source is visually recognized from the surface of the light emitting body through the light emitting body by causing the LED light source to emit light in response to a hit on a surface to be hit of the pad body. An electronic drum device characterized in that it becomes possible. 7. The electronic drum device according to claim 1, 2 or 6, wherein a light emitting surface of the light emitting body is a surface of the pad body. 8. The electronic drum device according to claim 1, wherein the light emitting surface of the light emitting body is located lower than the surface of the central portion of the pad body. 9. The light emitting body is further provided on the peripheral edge of the pad body.
Electronic drum device as described. 10. The electronic drum device according to claim 1, wherein the light emission mode of the surface of the light emitter is different according to the impact mode of the impact surface of the pad body. 11. An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, comprising: a light emitting body made of an elastic body that emits light in response to the hit detection on the pad body. An LED light source disposition substrate provided below the peripheral edge of the pad body and an LED light source disposed on the LED light source disposition substrate are provided, and light emitted from the LED light source is emitted from the surface of the light emitter through the light emitter. An electronic drum device characterized by being visible. 12. An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, wherein a substrate is provided below the pad body, and the pad hit is provided on a surface of the substrate facing the pad body. An electronic drum device, which is provided with an LED light source for sometimes emitting light. 13. An electronic drum device for generating a musical tone signal in response to a hit detection on a hit surface of a pad body, the light emitting body emitting light in response to the hit detection on the pad body, and the pad body. An electronic drum device comprising: an LED light source provided separately; and light emitted from the LED light source is supplied to the light emitter through an optical fiber.