JP2016053604A - Electronic percussion instrument and controller for electronic percussion instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic percussion instrument and a controller for an electronic percussion instrument that can variously change a percussion instrument sound during a musical performance.SOLUTION: In an electronic percussion instrument and a controller for an electronic percussion instrument, a sensor for detecting vibration is installed inside a housing and an area where small holes are concentrated is provided on an upper surface of the housing. The concentrated small holes are used as open holes (sound emission holes) in the case of an electronic percussion instrument including a speaker, and the plurality of the small holes are arranged on a dome-shaped projection part provided on the upper side of the housing. The dome-shaped projection part is formed to be thinner than the periphery of the dome-shaped projection part.SELECTED DRAWING: Figure 1

Description

The present invention relates to an electronic percussion instrument and a controller for an electronic percussion sound source capable of performing performance operations using palms and fingers.

  Patent Document 1 describes an electronic percussion instrument having a hand / percussion mode in which a pad is hit with a palm or the like. The electronic musical instrument described in the prior art document 1 shows an example in which a speaker is built in a housing, and in order to set the sensitivity of the pad to an appropriate sensitivity so as to emit an appropriate sound corresponding to the performance operation. The structure of is described.

  Patent Document 2 describes an example in which a pressure sensor is used to change a timbre according to a pressure on a hitting surface. In the electronic percussion instrument described in Patent Document 1, a specific configuration shape of the speaker grill is not described, but is simply described as a component for emitting a stereo sound. The electronic percussion instrument described in Patent Document 2 requires signal processing such as changing the volume balance by the output of the pressure sensor or reflecting it in the coefficient of the filter, and is a special mechanical component for linking the pressure sensor to the striking surface. It was necessary to use a shaped headboard.

As described above, in Patent Documents 1 and 2, in order to change the timbre when performing percussion instruments with the palm of the hand, electronic control and movable parts such as a headboard are required.

In addition, in a conventional electronic percussion instrument, several millimeters of protrusions are arranged in a straight line or an arc shape of about 10 cm, and this protrusion row is rubbed like a guillo that can be held in Latin music, thereby substituting for high-speed continuous hitting. There was a thing. However, even if the continuous hitting sound is to be generated continuously, it is necessary to turn back or touch again if it continues to the end of the projection row, and the time for which the continuous hitting sound can be continued stably has been defined. These protrusions were premised on rubbing with a stick made of a hard material such as a wooden instead of a finger.

  On the other hand, in Patent Document 3, the configuration of a percussion instrument sound source that improves the timbre reality of an electronic drum configured to detect a vibration of the striking surface due to striking against the striking surface of the drum body as a shock wave signal by a vibration pickup from an external signal. However, there is no description regarding a configuration in which a percussion instrument sound source can be played with a new performance using palms or fingers.

JP 2002-182643 A JP2010-224330 JP2010-271428A

As described above, in the conventional electronic percussion instrument, it is necessary to control electronically in order to change the timbre when the percussion instrument is played with a palm or a finger, and the continuous percussion of the percussion instrument is continuously and stably simulated by using the finger. It was difficult. It is an object of the present invention to realize an electronic percussion instrument and a controller for an electronic percussion instrument that realizes a new performance method for electronic percussion instruments by solving these problems.

The electronic percussion instrument of claim 1 is:
An electronic percussion instrument including a speaker 500 and a percussion instrument sound generation circuit 201 inside the housing 1,
The housing 1 is provided with a plurality of through holes 12 for emitting sound output from the speaker 500 to the outside of the housing.
The through holes 12 are densely arranged in a “region of a size that can be covered with a palm” on the dome-shaped convex portion on the upper surface of the housing,
The thickness of the casing in the “region that can be covered with a palm” is formed to be thinner than the thickness of the casing around the “region that can be covered with a palm”. With this configuration, an electronic percussion instrument that can easily change the timbre with the palm of the hand can be realized.

The electronic percussion instrument according to claim 2 is the electronic percussion instrument according to claim 1, wherein the plurality of through holes have a diameter of 1 mm or more and 8 mm or less, and a dense region of the plurality of through holes includes a circular area having a radius of 20 mm or more and 50 mm or less. The total area of the through holes excluding the through holes included in the circular region among the plurality of through holes is included within the dense region of the plurality of through holes, and the opening ratio of the circular region is 20% or more. Is an electronic percussion instrument having a configuration that is smaller than ½ of the opening area in the circular region or that there is no through hole in the casing outside the circular region. By using the electronic percussion instrument having this configuration, the performer can easily change the timbre with the palm of the hand, and a new performance method that is difficult with the conventional electronic percussion instrument can be realized.

The electronic percussion instrument of claim 3 comprises the vibration sensor of the electronic percussion instrument of claim 1 and an external signal input terminal for inputting an external electric signal around the casing. A first percussion instrument sound generating circuit that generates a first percussion instrument sound according to the output of the sensor; and a second percussion instrument that generates a second percussion instrument sound according to the amplitude of the electrical signal input to the signal input terminal. A sound generation circuit; a mixing circuit that mixes the first percussion instrument sound and the second percussion instrument sound; and a power amplification circuit that receives the output of the mixing circuit 30 and generates a speaker drive signal. Electronic percussion instrument. By using an electronic percussion instrument having this configuration, a performer can realize a new performance method with a higher degree of freedom than a conventional electronic percussion instrument using a plurality of percussion instrument sounds in combination with an external vibration sensor or the like.

In the invention of claim 4, the controller for an electronic musical instrument is
A region in which small holes are densely formed on the surface of the housing with a vibration sensor that detects vibration of the housing inside the housing,
The “area where the small holes are dense” is formed in a shape that allows an operator of the percussion instrument controller to rub with a finger along a circular locus having a radius of 2 cm or more.

According to a fifth aspect of the present invention, the electronic musical instrument controller according to the fourth aspect of the present invention has an output terminal that outputs an electrical signal output in response to a signal given to the vibration sensor,
(A) A low-pass filter or a band-pass filter that attenuates a signal component in a voice band from a frequency component of vibration applied to the vibration sensor, or (B) when the amplitude of vibration applied to the vibration sensor is a predetermined value or less. A gate circuit that attenuates or cuts off the amplitude of the signal is provided between the output of the vibration sensor and the output terminal.

In the electronic musical instrument according to the sixth aspect of the present invention, it is possible to stably continue and sound the simulated operation of repeated hitting. A non-penetrating small hole or small protrusion is used for the simulated operation of continuous hitting, and a structure in which dust or the like does not enter the housing can be obtained.

According to the present invention, it is possible to change the tone and volume of a percussion instrument sound during the performance without performing electronic control in order to change the tone when performing the percussion instrument performance with the palm. Difficult performance techniques can be easily implemented. Furthermore, when the sound emitting hole is arranged on the convex curved surface area in accordance with the shape of the palm, it is possible to realize a countermeasure against the difficulty of producing a high sound, and further, by providing a vibration sensor inside, a portion of the sound emitting hole can be realized. By continuously rubbing, there is an effect that it is possible to easily perform a roll performance that was difficult without using a stick. become. In addition, some conventional electronic percussion instruments have a few millimeters of protrusions arranged in a straight line or arc shape and rubbed like a gyro that is held in Latin music. Therefore, the effect as a filter cannot be obtained, and the length of the projection row is limited. Therefore, it is necessary to perform the folding operation in order to continue the continuous hitting sound, and it is difficult to keep the continuous hitting stably. was. On the other hand, since the holes can be arranged uniformly in the region of the small holes for sound emission, by rubbing the surface in the region where the small holes are arranged in a circle with a finger. Thus, it is possible to easily perform a rendition technique that continues the continuous hitting sound stably.

According to the first aspect of the present invention, it is possible to change the timbre and volume of the percussion instrument sound during the performance without performing electronic control in order to change the timbre when performing the percussion instrument performance with the palm. It is possible to easily perform performance techniques that are difficult with electronic percussion instruments.

According to the second aspect of the present invention, in the electronic percussion instrument of the first aspect, when the through hole (sound emitting hole) is arranged on the convex curved surface region in accordance with the shape of the palm, a measure for preventing the high sound from being realized is realized. it can.

According to the third aspect of the present invention, the performer can perform using a plurality of percussion instrument sounds in combination with an external vibration sensor or the like, and can realize a new performance method with a higher degree of freedom than a conventional electronic percussion instrument.

According to the invention of claim 4, by providing a vibration sensor inside, by continuously rubbing the part of the sound emitting hole, it is possible to easily perform a roll playing method that was difficult without using a stick. This makes it possible to easily apply strength during high-speed continuous striking, which is difficult even with a stick. In addition, some conventional electronic percussion instruments have a few millimeters of protrusions arranged in a straight line or arc shape and rubbed like a gyro that is held in Latin music. Therefore, the effect as a filter cannot be obtained, and the length of the projection row is limited. Therefore, it is necessary to perform the folding operation in order to continue the continuous hitting sound, and it is difficult to keep the continuous hitting stably. was. On the other hand, since the holes can be arranged uniformly in the region of the small holes for sound emission, by rubbing the surface in the region where the small holes are arranged in a circle with a finger. However, it is difficult to use the conventional electronic percussion instrument's hitting surface, and the playing method that “continues the continuous hitting sound with stable strength” draws the hitting surface to draw a circle or “eight-letter”. By doing so, it becomes possible easily, and a new playing method of the electronic percussion instrument can be realized.

According to the invention of claim 5, it is possible to avoid malfunction of the electronic percussion sound source due to unnecessary vibration unintended by the performer.

In the electronic musical instrument according to the sixth aspect of the present invention, it is possible to stably continue and sound the simulated operation of repeated hitting. A non-penetrating small hole can be used for the simulated operation of repeated hitting, so that a structure in which dust or the like does not enter inside the housing can be achieved, and new percussion instrument playing methods such as continuously simulating repeated hitting are possible. An electronic percussion instrument can be realized.

The figure which shows the external shape and performance method of the electronic percussion instrument of this invention. Sectional drawing which shows that the part of a sound emission hole is thinner than the circumference | surroundings. Block diagram of the electronic musical instrument of the present invention Block diagram of controller for electronic musical instrument External view of electronic percussion instrument of the present invention External view of controller of the present invention Sectional view showing speaker mounting position The figure which shows the example of a path | route which rubs in the dense area of a small hole with a finger

A specific configuration will be described with reference to the drawings showing the appearance and performance of an electronic percussion instrument as an example of the present invention.

FIG. 1 shows a state in which a hand 5 is held over a sound emitting hole 12 according to an embodiment of the present invention. If the distance between the palm or finger and the sound emission hole 12 is narrow, high sounds will be difficult to produce and the volume will be low. Since the timbre changes depending on how the hand approaches and how the palm including the finger bends, various performances are possible. Also, different performance effects were obtained depending on whether the sound emission holes 12 were opened or closed slowly. For example, by quickly opening and closing the sound emitting hole 12 with the palm of the hand, it is possible to obtain a timbre effect that uses a flanger of an instrument effector.

In order to close the speaker opening with the palm or finger, it is desirable to use a convex curved surface close to the natural state of the palm as the opening. However, if the case is resin-molded with a wall thickness of about 5 mm, for example, that of a normal speaker box, the high pitched sound may be too loud even when the hole is not blocked, but the sound may not be suitable for playing percussion instrument sounds. As a result, it was difficult to use a finger to enter the hole during the performance operation and to simulate the roll performance. As a result of trial and error, the wall thickness was made thinner than the surroundings to obtain the desired acoustic characteristics and operability. Although it should be determined in view of the strength, good results were obtained by setting the thickness of the thinned portion to be 1/2 or less of the surrounding thickness. FIG. 2 is a cross-sectional view showing a plurality of through-holes disposed in the dome-shaped region of the first invention and the surrounding thickness.

An example of the circuit configuration of the electronic percussion instrument of the present invention will be described with reference to FIG.

The electronic percussion instrument 1 of the invention of claim 3 includes a percussion instrument sound generation circuit 2 triggered by an input signal to the external signal input 102 and a percussion instrument sound generation circuit 1 driven by the output of the vibration sensor 100. The output of the percussion instrument sound generation circuit is mixed by the mixing circuit 300. The mixed signal is sent to the power amplifier circuit 400 to drive the speaker 500, which generates a percussion instrument sound. The percussion instrument sound generating circuit is a circuit for reading out a memory waveform as described in Prior Art Document 4 in accordance with an external impact signal. The vibration sensor 100 for driving the percussion instrument sound generating circuit 201 is a piezo sensor, and a conventional contact microphone for musical instruments (the internal vibration sensor is a piezo sensor) is used for input to the external signal input 102. The signal input from the external signal input 102 is input to the percussion instrument sound generation circuit 202 and the percussion instrument sound signal output from the percussion instrument sound generation circuit 202 is mixed by the mixing circuit 300 with the output signals of other percussion instrument sound generation circuits. Since the contact microphone for musical instruments is configured to be fixed to the musical instrument with a clip, it can be fixed to a variety of objects, not limited to musical instruments. For example, a metal disk surface covered with rubber, a plastic corrugated board, and magazines, dishes, shoes, and other objects not normally used as percussion instruments can be used as a hitting surface.

The percussion instrument sound generated in the percussion instrument sound generation circuit 201 by the signal from the external signal input is emitted from the speaker 500 and goes out of the housing 1 through the through hole (sound release hole) 12. A change in timbre is obtained by closing the through hole (sound emitting hole) 12. For example, the percussion instrument sound of the percussion instrument sound generation circuit 202 corresponding to the external signal input 102 is set to a cymbal sound via the control circuit 120 by the operation unit 110 (for example, a timbre changeover switch). By covering the through hole (sound emitting hole) with the palm of your hand and quickly opening and closing your finger, you can achieve the same effect as using the flanger of an effector for musical instruments. At this time, if a contact microphone connected to the external input 102 is attached to the magazine, a cymbal sound is emitted from the speaker 500 when the magazine is tapped, and the through-hole (sound emission) of the housing 1 is emitted during sound emission. You can change the tone of the cymbal by opening and closing the hole 12.

On the other hand, a sensor using a piezo element is also used for the vibration sensor 100 inside the housing 1. The output from the vibration sensor 100 is input to the percussion instrument generation circuit 201, and the output of the percussion instrument sound generation circuit 201 is mixed with the output of the percussion instrument sound generation circuit 202 by the mixing circuit 300. The mixed signal is amplified by the power amplifier circuit 400 and emitted from the speaker 500. Since the vibration sensor 100 is mounted inside the housing, it is easy to pick up vibrations of the housing. When the sound emitting hole 12 is rubbed with a finger or a nail, an impact is generated at the stepped portion. The vibration sensor 100 inside the housing detects this impact and drives the percussion instrument sound generating circuit 201 to generate a percussion instrument signal. Here, if the tone of the percussion instrument sound generation circuit 201 is set to the sound of a snare drum, an effect such as a roll performance technique that repeatedly strikes the snare drum at high speed when the portion where the sound emission holes 12 are densely rubbed with a nail is used. Can be obtained. The effect of the above-mentioned roll playing method can be continued stably for a long time rather than rubbing in a straight line by rubbing the dense region of the sound emitting holes with a fingertip like drawing a circle. Ingenuity in performance such as speed adjustment can be added.

FIG. 8 shows an example of a route of rubbing with a finger in a dense region of small holes (sound emitting holes or non-through holes).
(A) If it rubs circularly, a continuous hit sound can be continued stably.
(B) If it rubs straight, it can be used like a guillo.
(C) By rubbing so as to draw a polygon, a rhythmic effect can be obtained in which the drum roll is repeated for each side of the polygon.
In FIG. 8, the small holes are not shown because they are complicated.

In addition, since the dense region of the sound emitting holes is spread within a range of several centimeters, a circle-like figure can be drawn with the fingertip in this region. It is desirable that the dense region of the sound emission holes is as wide as possible as long as it can be closed with palms. In order to ensure the effect as a filter, the plurality of through-holes have a diameter of 1 mm or more and 8 mm or less, and the dense region of the plurality of through-holes is a circular region having a radius of 20 mm or more and 50 mm or less. The circular area has an opening ratio of 20% or more, and the sum of the opening areas of the through holes excluding the through holes included in the circular area is within the circular area. The opening area may be smaller than ½ of the opening area, or the casing may have no through hole outside the circular region. When a bass reflex duct is provided below the casing, the cross-sectional area of the duct may not be included in the opening area of the through hole excluding the through hole included in the circular region.

FIG. 7 is a cross-sectional view showing the mounting position of the speaker 500 to the housing 1. The convex curved surface on the upper surface of the housing 1 has a region where the through holes (sound emitting holes) 12 are dense, and the speaker 500 is attached below this region. A dome-shaped gap is formed between the vibration surface (cone) of the speaker 500 and the dome-shaped convex portion (convex curved surface) including a region where the through holes (sound emitting holes) 12 are densely packed. The high sound may be attenuated by the influence of the diameter of the air gap and the sound emission hole, the thickness of the housing = the depth of the sound emission hole (the duct length when viewed as a duct). The attenuation of the high sound is improved by forming only a portion of the region where the through holes (sound emission holes) 12 are denser than the periphery. In addition, a vibration sensor 100 that detects vibration applied to the housing 1 is mounted above the housing 1. Although a cross-sectional view of the electronic percussion instrument controller 2 is omitted, the electronic percussion instrument controller 2 also includes a case where the vibration sensor 100 that detects vibration applied to the casing 2 above the casing 2 is the electronic percussion instrument 1. It is similarly installed.

FIG. 4 is an example of a block diagram of a controller for an electronic percussion instrument according to the invention of claim 4. A circuit example will be described with reference to FIG.
The controller 2 for electronic percussion instruments of the present invention includes a vibration sensor 100 for detecting vibration inside the housing and a region where the small holes 12 are densely arranged on the surface of the housing, and the “region where the small holes are dense” is 3 cm or more. The percussion instrument controller 2 can be rubbed with a finger along a circular locus.
An output terminal 150 for outputting an electrical signal output in response to a signal applied to the vibration sensor 100 is provided. However, when a piezo sensor is used as the sensor, the output of the sensor is output as it is or in order to avoid disturbance. May be output via an impedance conversion circuit (not shown). When the electronic percussion sound source 201 is incorporated, for example, if a tone having a short envelope such as a rim shot sound is output, it can be used as a trigger signal for other electronic percussion sound sources. The delay until output cannot be avoided. The vibration sensor 100 may be a sensor other than a piezo sensor. For example, a dynamic speaker can be used for vibration detection.

In FIG. 5, in order to avoid malfunctions caused by unexpected and unnecessary vibrations of the percussion instrument player,
(A) a low-pass filter or a band-pass filter 130 that attenuates a signal component of a voice band from a frequency component of vibration applied to the vibration sensor 100;
(B) A gate circuit 140 that attenuates or cuts off the amplitude of the signal when the amplitude of the vibration applied to the vibration sensor 100 is a predetermined value or less.
Are provided between the output of the vibration sensor 100 and the output terminal 150, but (A) or (B) may be omitted depending on the input specifications of the electronic percussion instrument sound source to be connected.

The upper surface of the housing of the electronic musical instrument controller has a “region where small holes are densely packed” so that the operator of the percussion musical instrument controller can rub with a finger along a circular path with a radius of 3 cm or more. A small hole 12 (non-through hole) is disposed in the hole. For example, if a star-shaped housing having a “small hole-dense region” is used, the star-shaped “small” is set so that the radius of a circle inscribed in the pentagonal region at the center of the star shape is 3 cm or more. If the shape of the “hole dense area” is determined, it is easy to perform continuous operation. Continuous rubbing can be easily simulated by rubbing with a finger or nail to draw the inscribed circle.

When the percussion instrument controller according to claim 4 or the electronic percussion instrument according to claim 6 does not include the speaker 500, it is meaningless to open and close the through-hole with the palm of the hand. The area where the small holes are densely provided on the surface of the body can be simulated by rubbing this area. In this case, the “region where the non-penetrating small holes are dense” can be rubbed with a finger by the operator of the percussion instrument controller along a circular locus with a radius of 3 cm or more. For example, a non-through hole with a radius of 0.25 mm may be arranged in a radius of 4 cm so that the distance between the centers is 1 mm or less. Even in the case of the configuration including the speaker 500, it is possible to expand a region where continuous hitting can be simulated by disposing non-through holes around a region where sound emitting holes (through holes) are dense. Since there is no restriction on the arrangement of the non-through holes, the electronic percussion instrument shown in FIG. 1 and FIG. Holes can be placed.

DESCRIPTION OF SYMBOLS 1 Electronic percussion instrument 2 of this invention Controller 5 for electronic percussion instruments of this invention Player's hand 12 Small hole 15 The path | route rubbing in the dense area of small holes

100 Vibration sensor 102 External signal input 1
103 External signal input 2
104 External signal input 3

DESCRIPTION OF SYMBOLS 120 Control circuit 130 Band-limiting filter 140 Gate circuit 150 Output terminal 201 of the controller for electronic percussion instruments of this invention Percussion instrument sound generation circuit 1
202 Percussion instrument sound generation circuit 2
203 Percussion instrument sound generation circuit 3
204 Percussion instrument sound generation circuit 4

300 Mixing circuit 400 Power amplification circuit 500 Speaker

Claims (6)

An electronic percussion instrument including a speaker 50 and a percussion instrument sound generation circuit 201 inside a housing,
The housing is provided with a plurality of through holes for emitting sound output from the speaker 50 to the outside of the housing,
The through-holes are densely arranged in a “region of a size that can be covered with a palm” on the dome-shaped convex portion on the upper surface of the housing,
The electronic percussion instrument is characterized in that a thickness of a casing of the “region that can be covered with a palm” is formed thinner than a thickness of a casing around the “region that can be covered with a palm”. 2. The electronic percussion instrument according to claim 1, wherein the plurality of through holes have a diameter of 1 mm or more and 8 mm or less, and a region where the plurality of through holes are densely packed is a circular region whose radius is 20 mm or more and 50 mm or less. The opening ratio of the circular region included in the circular region is 20% or more, and the total opening area of the through holes excluding the through holes included in the circular region among the plurality of through holes is the opening area in the circular region An electronic percussion instrument characterized by having no through-hole in the housing that is smaller than ½ of the circular area or outside the circular region. The electronic musical instrument according to claim 1, further comprising: a vibration sensor 10 inside the casing; and an external signal input terminal 102 that inputs an electric signal from the outside around the casing, according to the output of the vibration sensor. A first percussion instrument sound generation circuit 201 that generates one percussion instrument sound; a second percussion instrument sound generation circuit 202 that generates a second percussion instrument sound in accordance with the amplitude of the electrical signal input to the signal input terminal; An electronic percussion instrument comprising: a mixing circuit 30 that mixes a first percussion instrument sound and a second percussion instrument sound; and a power amplification circuit 40 that receives an output of the mixing circuit 30 and generates a driving signal for a speaker 50. A vibration sensor for detecting vibration of the housing inside the housing and a region where small holes are densely formed on the surface of the housing,
The "area where the small holes are dense" is formed in a shape that allows an operator of the percussion instrument controller to rub with a finger along a circular trajectory with a radius of 3 cm or more. Controller for electronic percussion instruments. The electronic percussion instrument controller has an output terminal for outputting an electrical signal output in response to a signal given to the vibration sensor,
(A) A low-pass filter or a band-pass filter that attenuates a signal component in a voice band from a frequency component of vibration applied to the vibration sensor, or (B) when the amplitude of vibration applied to the vibration sensor is a predetermined value or less. A controller for an electronic percussion instrument, comprising a gate circuit for attenuating or blocking a signal amplitude between the output of the vibration sensor and the output terminal. In an electronic percussion instrument provided with a percussion instrument sound output terminal for outputting an output signal from the vibration sensor, a percussion instrument sound generation circuit, and the percussion instrument sound generation circuit to the outside of the casing inside the casing,
A region where small holes or small protrusions are concentrated on the surface of the housing,
The “area where the small holes or small protrusions are dense” is formed in a shape that allows an operator of the percussion instrument controller to rub a finger with a radius of 3 cm or more along a circular locus. Electronic percussion instrument.