CN109102786A - A kind of smart card flood drum - Google Patents
A kind of smart card flood drum Download PDFInfo
- Publication number
- CN109102786A CN109102786A CN201710475911.3A CN201710475911A CN109102786A CN 109102786 A CN109102786 A CN 109102786A CN 201710475911 A CN201710475911 A CN 201710475911A CN 109102786 A CN109102786 A CN 109102786A
- Authority
- CN
- China
- Prior art keywords
- touch control
- data processing
- smart card
- signal
- control unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012545 processing Methods 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 24
- 239000000919 ceramic Substances 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 17
- 229910052751 metal Inorganic materials 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 11
- 230000005611 electricity Effects 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 239000003990 capacitor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- SUBGURZSWAMWPI-UHFFFAOYSA-N germanium lead Chemical compound [Ge].[Pb] SUBGURZSWAMWPI-UHFFFAOYSA-N 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H3/00—Instruments in which the tones are generated by electromechanical means
- G10H3/12—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument
- G10H3/14—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means
- G10H3/146—Instruments in which the tones are generated by electromechanical means using mechanical resonant generators, e.g. strings or percussive instruments, the tones of which are picked up by electromechanical transducers, the electrical signals being further manipulated or amplified and subsequently converted to sound by a loudspeaker or equivalent instrument using mechanically actuated vibrators with pick-up means using a membrane, e.g. a drum; Pick-up means for vibrating surfaces, e.g. housing of an instrument
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D13/00—Percussion musical instruments; Details or accessories therefor
- G10D13/01—General design of percussion musical instruments
- G10D13/02—Drums; Tambourines with drumheads
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10D—STRINGED MUSICAL INSTRUMENTS; WIND MUSICAL INSTRUMENTS; ACCORDIONS OR CONCERTINAS; PERCUSSION MUSICAL INSTRUMENTS; AEOLIAN HARPS; SINGING-FLAME MUSICAL INSTRUMENTS; MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR
- G10D13/00—Percussion musical instruments; Details or accessories therefor
- G10D13/10—Details of, or accessories for, percussion musical instruments
- G10D13/26—Mechanical details of electronic drums
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
- G10H1/00—Details of electrophonic musical instruments
- G10H1/0008—Associated control or indicating means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- User Interface Of Digital Computer (AREA)
Abstract
The present invention provides a kind of smart card flood drums, comprising: drum body, and, the bulging body is integrated with the detection part for detecting strike operation, the detection part includes the multiple touch control units being distributed on the different location of the bulging body, and the data processing unit being electrically connected with each touch control unit, wherein, the touch control unit is configured to generate the first signal when being touched, or capacitance variations or charge variation are generated when being touched;The data processing unit is configured to when receiving first signal, or detecting the capacitance variations or charge variation, the second signal of corresponding generation and transmission about hit position.The present invention has user experience good, and can heighten the enjoyment.
Description
Technical field
The present invention relates to field of percussion instruments, especially a kind of smart card flood drum.
Background technique
With the continuous promotion of the popularization degree of card flood drum at home, more and more people start contact and learning card flood drum.
And card flood drum on the market only has simple mechanical structure at present, can not generate and interact with learner or striker.
Uninteresting study simple in this way brings inconvenience to the people for much liking card flood drum, and user experience is bad.
Summary of the invention
The present embodiments relate to a kind of smart card flood drums for being able to detect strike situation and interacting with operator's generation.
In order to solve the above-mentioned technical problem, the embodiment of the invention provides the following technical solutions:
A kind of smart card flood drum, comprising: drum body, also, the bulging body is integrated with the test section for detecting strike operation
Part, the detection part include the multiple touch control units being distributed on the different location of the bulging body, and with each touch-control
The data processing unit of unit electrical connection, wherein
The touch control unit is configured to generate the first signal when being touched, or generate when being touched capacitance variations or
Person's charge variation;
The data processing unit is configured to receiving first signal, or detects the capacitance variations or charge
When variation, the second signal of corresponding generation and transmission about hit position.
In a preferred embodiment, the touch control unit includes pressure sensor, the pressure sensor and the data processing
Unit electrical connection.
In a preferred embodiment, the touch control unit includes:
First conductor is electrically connected with the data processing unit;
Second conductor is laid in around second conductor with prepsetting gap, and is grounded.
In a preferred embodiment, first conductor is the first sheet metal, and second conductor configuration is one described default
Spacer ring is located at the second sheet metal of first sheet metal periphery.
In a preferred embodiment, the touch control unit includes:
Piezoelectric ceramic piece is electrically connected with the data processing unit;
Metal vibration plate, the piezoelectric ceramic piece are disposed thereon.
In a preferred embodiment, the data processing unit is also configured to the value based on the charge variation and generates about beating
Hit the second signal of dynamics.
In a preferred embodiment, the bulging body is divided into multiple strike regions, is at least arranged one in each strike region
A touch control unit.
In a preferred embodiment, the data processing unit includes single-chip microcontroller and connect with the outlet side of the single-chip microcontroller
Communication module;
Wherein, the input side of the single-chip microcontroller is connect with each touch control unit, and sends described by communication module
Binary signal.
In a preferred embodiment, the bulging body is at least tetrahedron, at least one face of the bulging body is integrated with the inspection
Survey component.
In a preferred embodiment, the smart card flood drum further includes whole with the electronics of data processing unit communication connection
End, the electric terminal are configured to received second signal and show information.
Compared with prior art, the embodiment of the present invention have it is following the utility model has the advantages that
Card flood drum in the embodiment of the present invention is able to detect that strike situation (such as hit position), and generates corresponding letter
Number, in order to cooperate display strike situation with electric terminal;With preferable interaction effect, further promotes study enjoyment and make
Use interest.
Detailed description of the invention
Fig. 1 is the card flood drum the schematic diagram of the section structure in the embodiment of the present invention;
Fig. 2 is the structural schematic diagram of the detection part in the embodiment of the present invention;
Fig. 3 is the structural schematic diagram of the touch control unit in another embodiment of the present invention;
Fig. 4 is the structural schematic diagram of the card flood drum in another embodiment of the present invention.
Description of symbols
100- rouses body 200- detection part
101- rings string 102- card slot
201- touch control unit 202- data processing equipment
2011- the first conductor the second conductor of 2012-
2013- piezoelectric ceramic piece 2014- metal vibration plate
2021- single-chip microcontroller 2022- communication unit
300- electric terminal 301- display unit
302- display driver element
Specific embodiment
In the following, specific embodiments of the present invention are described in detail in conjunction with attached drawing, but not as the limitation of the invention.
It should be understood that various modifications can be made to disclosed embodiments.Therefore, description above should not regard
To limit, and only as the example of embodiment.Those skilled in the art will expect within the scope and spirit of this
Other modifications.
The embodiment of the invention provides a kind of smart card flood drum, card flood drum can detecte the strike operation of user, and
Corresponding signal is generated, other electric terminals is facilitated to receive the case where corresponding display strike of the signal operates.
As shown in Figure 1, for the cross-sectional view of the smart card flood drum in the embodiment of the present invention.
Wherein, the smart card flood drum in the embodiment of the present invention includes drum body 100 and is integrated on bulging body 100 for detecting
The detection part 200 of operation is hit, the drum body 100 in the embodiment of the present invention can at least be configured to tetrahedron, can also be with structure
It makes as 7 face shown in FIG. 1 body, or is also possible to 6 face bodies, the invention is not limited thereto.Meanwhile at least one face of drum body 100
It is so structured that executing the drum surface of strike operation, detection part 200 be can integrate in the drum surface.
In addition, the drum body 100 of the card flood drum in the embodiment of the present invention, inside can be set to ring string 101 and fix and has rung string
101 card slot 102, for ringing the structure of string 101 and card slot 102, those skilled in the art can voluntarily match according to the prior art
It sets, details are not described herein.
The detection part 200 in the embodiment of the present invention is described in detail below, is illustrated in figure 2 the embodiment of the present invention
In detection part structural schematic diagram.
Wherein, the detection part 200 in the embodiment of the present invention may include multiple touch control units 201 and with multiple touching
Control the data processing unit 202 of unit connection, wherein touch control unit 201 in the embodiment of the present invention is it is so structured that can be
The first signal is generated when being touched operation, or capacitance variations or charge variation are generated when receiving touch control operation.And data
Processing unit 201 can by being electrically connected with touch control unit 201, come receive the first signal or detect the capacitance variations or
Charge variation, and the first signal based on touch control unit 201 connected to it or the capacitance variations or charge variation that detect
The second signal about hit position is generated, while the third signal of hitting dynamics can also be generated according to the value of charge variation.
Specifically, the touch control unit in the embodiment of the present invention may include pressure sensor, it can in the drum surface of cabinet body
The upper multiple pressure sensors of distribution, with detection strike operation.In order to improve detection accuracy, laying pressure sensing that can be more as far as possible
Device.Wherein, which generates when detecting touch-control pressure indicates by the first signal of touch-control, and number connected to it
According to processing unit 202 when receiving first signal, the second letter of the position including the touch control unit corresponding can be generated
Number.Other electronic equipments or device can receive the second signal from data processing unit 202 and beat to obtain to be performed
Hit the location information of the touch control unit 201 of operation.
Wherein, touch control unit 201 in an alternative embodiment of the invention can be also configured to capacitance structure, wherein can be with
Including the first conductor 2011 and the second conductor 2022, which is electrically connected with data processing unit 202, and second leads
Body 2012 is laid in around a conductor with prepsetting gap, and is grounded.It can be with by the first conductor 2011 and the second conductor 2012
Capacitance structure is formed, when human body touches the first conductor 2011, due to the electric action of human body, is equivalent to a capacitor in parallel
Body, and it is corresponding to can detecte first conductor with the data processing unit 202 that first conductor 2011 is electrically connected at this time
The capacitance variations of touch control unit 201 corresponding can then be generated when data processing unit 202 detects the variation of the capacitor
Indicate that first conductor 2011 is performed the second signal of strike operation.It is corresponding, receive the electronic equipment of the second signal
Or device may determine that the position (i.e. the position of the first conductor or touch control unit of generation capacitance variations) hit in drum surface.
In an embodiment of the present invention, it can store in data processing equipment 202 or in memory connected to it
The location information of each touch control unit 201, and data processing equipment 202 is in the capacitor for detecting the touch control unit 201 being correspondingly connected with
When changing, then the location information of the touch control unit 201 can be read, to generate second signal.
In embodiments of the present invention, above-mentioned first conductor 2011 can be the first sheet metal, and the second conductor 2012 can be with structure
It makes to be located at the second sheet metal of the first sheet metal periphery with prepsetting gap ring.The wherein material of the first sheet metal and the second sheet metal
Material may include copper.
The strike in drum surface can be judged by touch control unit 201 and data processing unit 202 by above-described embodiment
The position of operation, and generate corresponding second signal, while the equipment for receiving the second signal can also mould on the display unit
The quasi- relevant information for showing strike operation, such as show the information of corresponding hit position in the drum surface and drum surface of strike
Deng.
In another embodiment of the invention, for example, the structure that Fig. 3 is the touch control unit in another embodiment of the present invention is shown
It is intended to.Wherein, touch control unit 201 may include: piezoelectric ceramic piece 2013 and metal vibration plate 2014.Wherein piezoelectric ceramic piece
2013 are electrically connected with data processing unit 202, and piezoelectric ceramic piece 2013 can be laid on metal vibration plate 2014.Data
Processing unit 202 can generate the second signal based on the charge variation on the piezoelectric ceramic piece 2013 connected.Meanwhile number
Third signal of the generation of the value based on the charge variation about hitting dynamics is also configured to according to processing unit 202.In addition this hair
Piezoelectric ceramic piece in bright embodiment may include germanium lead titanate piezoelectric ceramics piece (PZT).
Specifically, the metal vibration plate 2014 in the embodiment of the present invention can be structured as the drum surface of drum body, it is also possible to set
It sets in drum surface, when executing the strike operation for drum surface, metal vibration plate 2014 generates vibration, and drives piezoelectricity thereon
Potsherd 2013 vibrates.And since piezoelectric ceramic piece can generate charge in vibration, then it can be by executing strike to drum surface
When movement, the piezoelectric ceramic piece of charge variation is generated to determine the hit position of strike operation, while the charge that can also be generated
Number judges hitting dynamics.That is, the data processing equipment 202 being connected with the piezoelectric ceramic piece 2013 can detecte due to
Strike operates and makes the charge variation or voltage change that generate on piezoelectric ceramic piece 2013, in the charge for having piezoelectric ceramic piece 2013
When number changes, data processing equipment 202 can judge that the piezoelectric ceramic piece 2013 is performed strike operation, and at data
Managing equipment 202 then can the corresponding second signal for generating the location information about the piezoelectric ceramic piece 2013.
It can be with likewise, in an embodiment of the present invention, in data processing equipment 202 or in memory connected to it
It is stored with the location information of each touch control unit 201, and data processing equipment 202 is detecting the touch control unit 201 being correspondingly connected with
Charge when changing, then the location information of the touch control unit 201 can be read, to generate second signal.
Meanwhile data processing equipment 202 can also be by obtaining the charge number generated on piezoelectric ceramic piece 2013 or electricity
Pressure value judges the hitting dynamics for the piezoelectric ceramic piece 2013, and generates the third signal about hitting dynamics.It is excellent simultaneously
Choosing, when obtaining the charge number or voltage value of piezoelectric ceramic piece 2013, data processing equipment 202 can also judge that charge number becomes
Change the target that maximum piezoelectric ceramic piece is strike operation, and the object based on strike operation generates second signal and the
Three signals.
In addition, in a preferred embodiment of the invention, drum body 100 can be divided for multiple strike regions, each strike
One touch control unit 201 is at least set in region.Data processing unit 202 can be based on the first signal of reception or generation
The execution region of capacitor or the judgement strike operation of the touch control unit of charge variation 201, and generate about the signal for executing region.Separately
Outside, in a preferred embodiment of the invention, in data processing equipment 202 second signal is generated or when third signal, it can also be
It include temporal information in the second signal and third signal, in order to which electric terminal obtains strike operation when receiving the signal
Time.
Data processing unit 202 in the corresponding embodiment of the present invention, may include single-chip microcontroller 2021 and with the single-chip microcontroller
The communication unit 2022 of 2021 connections, single-chip microcontroller 2021 can be electrically connected with each touch control unit 201, and receive the first signal, or
Person detects the capacitor or charge variation of touch control unit 201, to generate second signal and third signal, and passes through communication unit 2022
The second signal and third signal are sent on other electronic equipments or electronic device.In addition, in the embodiment of the present invention
Communication unit 2021 may include at least one of bluetooth module, WiFi module, NFC module or a variety of.
In addition, as shown in figure 4, can also include the electricity communicated to connect with data processing unit 202 in the embodiment of the present invention
Sub- terminal 300, the electric terminal 300 may include mobile phone, computer equipment or other terminal devices, and electric terminal 300 can
To include display unit 301, and the corresponding information such as above-mentioned the first signal and the second signal is shown by display unit 301.
Specifically, the electric terminal in the embodiment of the present invention can also include display driver element 302, display driving is single
Member 302 can be communicated to connect with communication unit 2022, and receive the second signal and third signal of its transmission.
Display driver element 302 can control operation interface of the display of display unit 301 about card flood drum, can show thereon
When showing the position where the upper each touch control unit of card flood drum, and receiving the second signal and third signal from communication unit 202,
It can control the information for showing that corresponding touch control unit is hit.Wherein it is possible to be shown by dynamic mode to indicate this dozen
Hit operation.
In addition, corresponding to the different hitting dynamics of third signal, display driver element 302 also can control display unit
2022 are indicated with different display modes.
Through the above configuration, it can realize the detection of the hit position or hitting dynamics for smart card flood drum, and
Corresponding the case where can carrying out corresponding display strike operation in conjunction with other electric terminals, increase the use for carminum drum
Interest, user experience are more preferable.
It is apparent to those skilled in the art that for convenience and simplicity of description, the data of foregoing description
The electronic equipment that processing method is applied to, can be with reference to the corresponding description in before-mentioned products embodiment, and details are not described herein.
Above embodiments are only exemplary embodiment of the present invention, are not used in the limitation present invention, protection scope of the present invention
It is defined by the claims.Those skilled in the art can within the spirit and scope of the present invention make respectively the present invention
Kind modification or equivalent replacement, this modification or equivalent replacement also should be regarded as being within the scope of the present invention.
Claims (10)
1. a kind of smart card flood drum characterized by comprising drum body, also, the bulging body is integrated with for detecting strike operation
Detection part, the detection part includes the multiple touch control units being distributed on the different location of the bulging body, and with it is each
The data processing unit of the touch control unit electrical connection, wherein
The touch control unit is configured to generate the first signal when being touched, or capacitance variations or electricity are generated when being touched
Lotus variation;
The data processing unit is configured to receiving first signal, or detects the capacitance variations or charge variation
When, the second signal of corresponding generation and transmission about hit position.
2. smart card flood drum according to claim 1, which is characterized in that the touch control unit includes pressure sensor, should
Pressure sensor is electrically connected with the data processing unit.
3. smart card flood according to claim 1 drum, which is characterized in that the touch control unit includes:
First conductor is electrically connected with the data processing unit;
Second conductor is laid in around second conductor with prepsetting gap, and is grounded.
4. smart card flood drum according to claim 3, which is characterized in that first conductor is the first sheet metal, described
Second conductor configuration is the second sheet metal that a prepsetting gap ring is located at first sheet metal periphery.
5. smart card flood according to claim 1 drum, which is characterized in that the touch control unit includes:
Piezoelectric ceramic piece is electrically connected with the data processing unit;
Metal vibration plate, the piezoelectric ceramic piece are disposed thereon.
6. smart card flood drum according to claim 5, which is characterized in that the data processing unit is also configured to based on institute
State second signal of the value generation of charge variation about hitting dynamics.
7. smart card flood drum according to claim 1, which is characterized in that the bulging body is divided into multiple strike regions, respectively
One touch control unit is at least set in the strike region.
8. smart card flood according to claim 1 drum, which is characterized in that the data processing unit include single-chip microcontroller and
The communication module being connect with the outlet side of the single-chip microcontroller;
Wherein, the input side of the single-chip microcontroller is connect with each touch control unit, and sends second letter by communication module
Number.
9. smart card flood drum according to claim 1, which is characterized in that the bulging body is at least tetrahedron, the bulging body
At least one face be integrated with the detection part.
10. smart card flood drum according to claim 1, which is characterized in that further include being communicated with the data processing unit
The electric terminal of connection, the electric terminal are configured to received second signal and show information.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710475911.3A CN109102786A (en) | 2017-06-21 | 2017-06-21 | A kind of smart card flood drum |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710475911.3A CN109102786A (en) | 2017-06-21 | 2017-06-21 | A kind of smart card flood drum |
Publications (1)
Publication Number | Publication Date |
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CN109102786A true CN109102786A (en) | 2018-12-28 |
Family
ID=64796389
Family Applications (1)
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CN201710475911.3A Pending CN109102786A (en) | 2017-06-21 | 2017-06-21 | A kind of smart card flood drum |
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JP2004361985A (en) * | 2004-09-27 | 2004-12-24 | Yamaha Corp | Percussion instrument type musical tone controller |
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CN106098044A (en) * | 2016-06-07 | 2016-11-09 | 得理电子(上海)有限公司 | The correlating method of a kind of electronic musical instrument, system and electronic equipment thereof |
CN206961502U (en) * | 2017-06-29 | 2018-02-02 | 得理乐器(珠海)有限公司 | A kind of electronic percussion instrument impact position detection means |
CN210895996U (en) * | 2019-08-13 | 2020-06-30 | 深圳市运峰科技有限公司 | African drum teaching system |
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2017
- 2017-06-21 CN CN201710475911.3A patent/CN109102786A/en active Pending
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EP0215018A1 (en) * | 1985-02-06 | 1987-03-25 | Simmons Electronics Ltd. | A pickup arrangement for an electronic percussion instrument |
JP2004361985A (en) * | 2004-09-27 | 2004-12-24 | Yamaha Corp | Percussion instrument type musical tone controller |
JP2007264058A (en) * | 2006-03-27 | 2007-10-11 | Yamaha Corp | Electronic musical instrument |
CN101345044A (en) * | 2008-09-03 | 2009-01-14 | 王琳 | Luminous drum leather and preparation thereof |
CN103366723A (en) * | 2012-03-26 | 2013-10-23 | 雅马哈株式会社 | Electronic percussion instrument set and musical performance evaluating apparatus |
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CN204469190U (en) * | 2015-03-13 | 2015-07-15 | 李立 | A kind of drum-beating recreational machine |
CN105261353A (en) * | 2015-10-14 | 2016-01-20 | 得理电子(上海)有限公司 | Electronic percussion instrument with knocked area detection function |
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CN210895996U (en) * | 2019-08-13 | 2020-06-30 | 深圳市运峰科技有限公司 | African drum teaching system |
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