CN109635877A - Damper deforms identification systems - Google Patents

Damper deforms identification systems Download PDF

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Publication number
CN109635877A
CN109635877A CN201811581191.XA CN201811581191A CN109635877A CN 109635877 A CN109635877 A CN 109635877A CN 201811581191 A CN201811581191 A CN 201811581191A CN 109635877 A CN109635877 A CN 109635877A
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CN
China
Prior art keywords
equipment
damper
connect
image
shape
Prior art date
Application number
CN201811581191.XA
Other languages
Chinese (zh)
Inventor
袁美丽
傅斌
Original Assignee
余姚市荣大塑业有限公司
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 余姚市荣大塑业有限公司 filed Critical 余姚市荣大塑业有限公司
Priority to CN201811581191.XA priority Critical patent/CN109635877A/en
Publication of CN109635877A publication Critical patent/CN109635877A/en

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Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING; COUNTING
    • G06KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K9/00Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
    • G06K9/62Methods or arrangements for recognition using electronic means
    • G06K9/6201Matching; Proximity measures
    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10GAIDS FOR MUSIC; SUPPORTS FOR MUSICAL INSTRUMENTS; OTHER AUXILIARY DEVICES OR ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS
    • G10G7/00Other auxiliary devices or accessories, e.g. conductors' batons or separate holders for resin or strings

Abstract

The present invention relates to a kind of dampers to deform identification systems, comprising: pianotron body frame structure, including power amplifier, tone filter, piano sound shape logic array, binary counter and LC oscillator;The binary counter is connect with the piano sound shape logic array, and the piano sound shape logic array is connect with the tone filter;When the binary counter is N grades of binary counters, the quantity of the piano sound shape gate circuit in the piano sound shape logic array is 12N+1;The LC oscillator is connect with the binary counter, and the power amplifier is connect with the tone filter;Shape compares equipment, for damper subgraph to be compared with benchmark damper pattern, to obtain corresponding similarity, and when the similarity is lower than preset percentage threshold value, issues shape distorted signal.By means of the invention it is possible to effectively be monitored to damper deformation.

Description

Damper deforms identification systems

Technical field

The present invention relates to damper fields more particularly to a kind of damper to deform identification systems.

Background technique

Damper is close to string, for preventing the vibration of string.When key is pressed, the hammer inside piano can be beaten On rule string made of copper, made a sound by the vibration of string.The position of felt is particularly significant on damper, every increase One piece of felt both increases and a possibility that error occurs, than felt bond locations mistake is easier that damper is allowed to lose without what Effect.

The important function of damper lives the vibration of string not needing pronunciation when system, i.e. only sound.It is fixed by sound-making bar pedestal On total shelves, damper head is pressed on string by sound spring processed, is struck a chord to avoid unleavened string, while in qin When thump beats string, part strength is also increased.The quantity of damper is usually no more than 75 because the string of treble compared with Short, frequency is higher, and string vibration stops comparatively fast, it is therefore not necessary to install damper.

Summary of the invention

In order to solve can not to ask in the prior art the technology that damper deformation is effectively identified under enclosed environment Topic, the present invention provides a kind of dampers to deform identification systems, after customizing image procossing, in pianotron body frame structure Damper shape carries out deformation analysis, and transmits wirelessly deformation analysis result to nearby users;In customization image procossing, respectively It is adaptive to select to carry out numerical analysis to the redundancy parameter of acquisition for the redundancy parameter for extracting image and standard picture to be processed The enhancing processing strategie answered is used to complete the adaptive enhancing processing to image to be processed.

According to an aspect of the present invention, a kind of damper deformation identification systems are provided, the system comprises:

Pianotron body frame structure, including power amplifier, tone filter, piano sound shape logic array, binary system meter Number device and LC oscillator.

More specifically, in damper deformation identification systems: the binary counter and the piano sound shape door Gate array connection, the piano sound shape logic array are connect with the tone filter.

More specifically, in damper deformation identification systems: when the binary counter is N grades of binary countings When device, the quantity of the piano sound shape gate circuit in the piano sound shape logic array is 12N+1.

More specifically, in damper deformation identification systems: the LC oscillator and the binary counter connect It connects, the power amplifier is connect with the tone filter.

More specifically, in damper deformation identification systems, further includes:

Shape compares equipment, connect with subgraph extract equipment, is used for damper subgraph and benchmark damper pattern It is compared, to obtain corresponding similarity, and when the similarity is lower than preset percentage threshold value, issues shape distortion letter Number;The shape compares equipment and is also used to issue shape mark when the similarity is optionally greater than the preset percentage threshold value Calibration signal;WIFI communication equipment compares equipment with the shape and connect, for inciting somebody to action when receiving the shape distorted signal The shape distorted signal is sent to the mobile terminal of user by WIFI communication link;Full-color candid photograph equipment is arranged in electronics In piano body frame structure, for carrying out full-color candid photograph processing to scene inside pianotron body frame structure, to obtain corresponding body frame structure Internal image;First parameter acquisition device is connect with the full-color candid photograph equipment, for receiving the body frame structure internal image, Redundancy parsing is executed to the body frame structure internal image, to obtain the first redundancy parameter;Second parameter acquisition device, is used for The Lai Natu is received, redundancy parsing is executed to the Lai Natu, to obtain the second redundancy parameter;Parameter compares equipment, It is connect respectively with first parameter acquisition device and second parameter acquisition device, for receiving the first redundancy ginseng Several and the second redundancy parameter, and when the second redundancy parameter is more than or equal to the first redundancy parameter, hair First control instruction out when more than the three times that the first redundancy parameter is the second redundancy parameter, issues third Control instruction, and the first redundancy parameter be the three times of the second redundancy parameter between two times when, issue Second control instruction;Channel processing equipment, equipment connects compared with the parameter, for receiving second control instruction When, activation red channel enhancing equipment with to the body frame structure internal image execute red channel enhancing processing, and obtain and it is defeated Corresponding channel handles image out, is also used to when receiving the third control instruction, and activation full tunnel enhancing equipment is with right The body frame structure internal image is performed simultaneously at red channel enhancing processing, green channel enhancing processing and blue channel enhancing Reason, and obtain and export corresponding channel processing image;Subgraph extract equipment connect with the channel processing equipment, is used for The damper subgraph in the channel processing image is extracted based on damper imaging features;Red channel enhances equipment, uses In executing red channel enhancing processing to input picture in state of activation, stop in unactivated state logical to the red of input picture Road enhancing processing;Full tunnel enhance equipment, for state of activation to input picture be performed simultaneously red channel enhancing processing, it is green Chrominance channel enhancing processing and blue channel enhancing processing, stop the red channel being performed simultaneously to input picture in unactivated state Enhancing processing, green channel enhancing processing and blue channel enhancing processing;Wherein, the shape compares equipment and is also used to described When similarity is optionally greater than the preset percentage threshold value, shape standard signal is issued.

More specifically, in damper deformation identification systems: the channel processing equipment is also used to receiving When stating the first control instruction, using the body frame structure internal image as channel processing image output.

More specifically, in damper deformation identification systems, further includes:

Instant processing equipment is connect with the full-color candid photograph equipment, for executing Gauss to the body frame structure internal image Fuzzy filter processing, to obtain and export corresponding fuzzy filter image;Homomorphic filtering equipment connects with the instant processing equipment It connects, for receiving the fuzzy filter image, homomorphic filtering processing is executed to the fuzzy filter image, to obtain and export pair The homomorphic filtering image answered.

More specifically, in damper deformation identification systems, further includes:

Profile identification apparatus is connect with the homomorphic filtering equipment, for receiving the homomorphic filtering image, based on default Luminance threshold executes object outline identification to the homomorphic filtering image, to obtain one or more in the homomorphic filtering image A object outline;Area analysis equipment is connect with the profile identification apparatus, for receiving one or more of object wheels Exterior feature, and the area surrounded in object outline occupy the homomorphic filtering image area ratio be more than preset ratio threshold value when, really Determining the corresponding object of the object outline is effective object.

More specifically, in damper deformation identification systems, further includes:

Object extraction equipment is connect, for connecing respectively with first parameter acquisition device and the area analysis equipment The effective object of one or more of the homomorphic filtering image is received, and based on object depth to one or more of effectively right As carrying out sequence from big to small, the area that effective object that object depth ranks behind is occupied in the homomorphic filtering image The region replacement to be analyzed body frame structure internal image is sent to first parameter and obtained by domain as region to be analyzed Take equipment;FLASH storage chip is connect, for storing respectively with the area analysis equipment and the object extraction equipment State predetermined luminance threshold value and the preset ratio threshold value;Wherein, effective object object depth to be ranked behind is in the homomorphism The region occupied in filtering image as region to be analyzed output include: object depth is ranked behind it is one or more of The region that multiple effective objects of effective number of objects half occupy in the homomorphic filtering image is defeated as region to be analyzed Out.

Specific embodiment

The embodiment of damper deformation identification systems of the invention will be described in detail below.

The working condition requirement of damper: mechanical linkage will reflect sensitive, and the cooperation of each component is smooth, starting and resetting Cannot there be the phenomenon that delay or lag in motion process, and mechanical energy consumption should be reduced to the greatest extent, it is handy using what is become to allow. Start the time or opportunity requires properly, accurately, for quickly playing, slightly any blunt use reaction of damper is all It will affect the integrality of music and the playing state of player;Homing action requires quickly, accurately, and this requires each components itself Shape, satisfactory quality, cannot have deviation or damage;Only sound head and string contact position and movement must be accurate, it is desirable that Only sound felt shape is regular, itself is completely without abrasion or deformation, and accurate with the contact position of string, only sound head pushes down string Rationally, correctly, parallel with the contact surface of string, there can be no suspension, overtone or sound tails for movement.

In order to overcome above-mentioned deficiency, the present invention has built a kind of damper deformation identification systems, can effectively solve the problem that corresponding The technical issues of.

The damper shown according to an embodiment of the present invention deforms identification systems

Pianotron body frame structure, including power amplifier, tone filter, piano sound shape logic array, binary system meter Number device and LC oscillator.

Then, continue that the specific structure of damper deformation identification systems of the invention is further detailed.

In damper deformation identification systems: the binary counter and the piano sound shape logic array connect It connects, the piano sound shape logic array is connect with the tone filter.

In damper deformation identification systems: described when the binary counter is N grades of binary counters The quantity of piano sound shape gate circuit in piano sound shape logic array is 12N+1.

In damper deformation identification systems: the LC oscillator is connect with the binary counter, the function Rate amplifier is connect with the tone filter.

In damper deformation identification systems, further includes:

Shape compares equipment, connect with subgraph extract equipment, is used for damper subgraph and benchmark damper pattern It is compared, to obtain corresponding similarity, and when the similarity is lower than preset percentage threshold value, issues shape distortion letter Number;

The shape compares equipment and is also used to issue outer when the similarity is optionally greater than the preset percentage threshold value Shape standard signal;

WIFI communication equipment compares equipment with the shape and connect, for inciting somebody to action when receiving the shape distorted signal The shape distorted signal is sent to the mobile terminal of user by WIFI communication link;

Full-color candid photograph equipment is arranged in pianotron body frame structure, for carrying out to scene inside pianotron body frame structure Full-color candid photograph processing, to obtain corresponding body frame structure internal image;

First parameter acquisition device is connect with the full-color candid photograph equipment, right for receiving the body frame structure internal image The body frame structure internal image executes redundancy parsing, to obtain the first redundancy parameter;

Second parameter acquisition device executes redundancy parsing to the Lai Natu, to obtain for receiving the Lai Natu Second redundancy parameter;

Parameter compares equipment, connect respectively with first parameter acquisition device and second parameter acquisition device, uses It is more than or equal to institute in reception the first redundancy parameter and the second redundancy parameter, and in the second redundancy parameter When stating the first redundancy parameter, the first control instruction is issued, is the second redundancy parameter in the first redundancy parameter Three times more than when, issue third control instruction, and in the first redundancy parameter be the second redundancy parameter When three times are between two times, the second control instruction is issued;

Channel processing equipment, equipment connects compared with the parameter, for swashing when receiving second control instruction Red channel enhancing equipment living is to execute red channel enhancing processing to the body frame structure internal image, and acquisition and output correspond to Channel handle image, be also used to when receiving the third control instruction, activation full tunnel enhancing equipment to the master Framework internal image is performed simultaneously red channel enhancing processing, green channel enhancing processing and blue channel enhancing processing, and obtains Obtain and export corresponding channel processing image;

Subgraph extract equipment is connect with the channel processing equipment, for extracting institute based on damper imaging features State the damper subgraph in channel processing image;

Red channel enhances equipment, for executing red channel enhancing processing to input picture in state of activation, swashs non- State living stops the red channel enhancing to input picture and handles;

Full tunnel enhances equipment, for being performed simultaneously red channel enhancing processing, green to input picture in state of activation Channel enhancing processing and blue channel enhancing processing, stop the red channel being performed simultaneously to input picture in unactivated state and increase Strength reason, green channel enhancing processing and blue channel enhancing processing;

Wherein, the shape compares equipment and is also used to when the similarity is optionally greater than the preset percentage threshold value, Issue shape standard signal.

In damper deformation identification systems: the channel processing equipment is also used to receiving first control When instruction, using the body frame structure internal image as channel processing image output.

In damper deformation identification systems, further includes:

Instant processing equipment is connect with the full-color candid photograph equipment, for executing Gauss to the body frame structure internal image Fuzzy filter processing, to obtain and export corresponding fuzzy filter image;

Homomorphic filtering equipment is connect with the instant processing equipment, for receiving the fuzzy filter image, to the mould It pastes filtering image and executes homomorphic filtering processing, to obtain and export corresponding homomorphic filtering image.

In damper deformation identification systems, further includes:

Profile identification apparatus is connect with the homomorphic filtering equipment, for receiving the homomorphic filtering image, based on default Luminance threshold executes object outline identification to the homomorphic filtering image, to obtain one or more in the homomorphic filtering image A object outline;

Area analysis equipment is connect with the profile identification apparatus, for receiving one or more of object outlines, and When the ratio that the area that object outline surrounds occupies the homomorphic filtering image area is more than preset ratio threshold value, described in determination The corresponding object of object outline is effective object.

In damper deformation identification systems, further includes:

Object extraction equipment is connect, for connecing respectively with first parameter acquisition device and the area analysis equipment The effective object of one or more of the homomorphic filtering image is received, and based on object depth to one or more of effectively right As carrying out sequence from big to small, the area that effective object that object depth ranks behind is occupied in the homomorphic filtering image The region replacement to be analyzed body frame structure internal image is sent to first parameter and obtained by domain as region to be analyzed Take equipment;

FLASH storage chip is connect, for storing respectively with the area analysis equipment and the object extraction equipment State predetermined luminance threshold value and the preset ratio threshold value;

Wherein, the region effective object that object depth ranks behind occupied in the homomorphic filtering image as to Analyzed area output includes: the multiple effective of one or more of effective number of objects half that object depth ranks behind The region that object occupies in the homomorphic filtering image is exported as region to be analyzed.

In addition, WIFI is a kind of technology for allowing electronic equipment to be connected to a WLAN (WLAN), it is usually used 2.4G UHF or 5G SHF ISM radio frequency band.Being connected to WLAN is usually to have cryptoguard;But it can also be opening , allow for any equipment within the scope of WLAN can connect in this way.WIFI is the product of a wireless network communication technique Board is held by WIFI alliance.Purpose is the intercommunity improved between the Wi-Fi product based on 802.11 standard of IEEE. Someone is known as Wireless Fidelity the local area network of 802.11 serial protocols of IEEE is used.WIFI is even equal to wireless the Internet Network (important component that WIFI is WLAN).Wireless network online can simply be interpreted as wireless networking, nearly all Smart phone, tablet computer and laptop all support WIFI to surf the Internet, and are to use a kind of most wide wireless network transmissions now Technology.Cable network signal is actually converted into wireless signal, as starting as everybody introduction, uses nothing Line router is for supporting the related computer of its technology, mobile phone, plate etc. to receive.Mobile phone is having if there is WIFI function It can not be surfed the Internet by the network of mobile UNICOM when WIFI wireless signal, eliminate traffic fee.On wireless network is wireless Net is more commonly used in big city, although not being data safety performance BELAND very well by the radio communication quality that WiFi technology is transmitted Tooth is weaker, and transmission quality also has much room for improvement, but transmission speed is very fast, can achieve 54Mbps, meets personal and society's letter The demand of breathization.The most important advantage of WIFI is not needing to be routed, and can not be limited by wiring condition, therefore be very suitable to The needs of mobile office user, and since transmitting signal power is lower than 100mw, it is lower than mobile phone transmission power, so on WIFI Opposite net is also most safe and healthy.

Identification systems are deformed using damper of the invention, for can not become in the prior art to damper under enclosed environment The technical issues of shape situation is effectively identified, after customizing image procossing, to the damper in pianotron body frame structure outside Shape carries out deformation analysis, and transmits wirelessly deformation analysis result to nearby users;In customization image procossing, extracted respectively wait locate The redundancy parameter for managing image and standard picture carries out numerical analysis to the redundancy parameter of acquisition to select adaptive enhancing Processing strategie is used to complete the adaptive enhancing processing to image to be processed;To efficiently solve above-mentioned technical problem.

It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to Limit the present invention.For any person skilled in the art, without departing from the scope of the technical proposal of the invention, Many possible changes and modifications all are made to technical solution of the present invention using the technology contents of the disclosure above, or are revised as With the equivalent embodiment of variation.Therefore, anything that does not depart from the technical scheme of the invention are right according to the technical essence of the invention Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection It is interior.

Claims (9)

1. a kind of damper deforms identification systems, the system comprises:
Pianotron body frame structure, including power amplifier, tone filter, piano sound shape logic array, binary counter With LC oscillator.
2. damper as described in claim 1 deforms identification systems, it is characterised in that:
The binary counter is connect with the piano sound shape logic array, the piano sound shape logic array with it is described Tone filter connection.
3. damper as claimed in claim 2 deforms identification systems, it is characterised in that:
Piano sound shape when the binary counter is N grades of binary counters, in the piano sound shape logic array The quantity of gate circuit is 12N+1.
4. damper as claimed in claim 3 deforms identification systems, it is characterised in that:
The LC oscillator is connect with the binary counter, and the power amplifier is connect with the tone filter.
5. damper as claimed in claim 4 deforms identification systems, which is characterized in that the system also includes:
Shape compares equipment, connect with subgraph extract equipment, for carrying out damper subgraph and benchmark damper pattern It compares, to obtain corresponding similarity, and when the similarity is lower than preset percentage threshold value, issues shape distorted signal;
The shape compares equipment and is also used to issue shape mark when the similarity is optionally greater than the preset percentage threshold value Calibration signal;
WIFI communication equipment compares equipment with the shape and connect, will be described for when receiving the shape distorted signal Shape distorted signal is sent to the mobile terminal of user by WIFI communication link;
Full-color candid photograph equipment is arranged in pianotron body frame structure, full-color for carrying out to scene inside pianotron body frame structure Candid photograph processing, to obtain corresponding body frame structure internal image;
First parameter acquisition device is connect, for receiving the body frame structure internal image, to described with the full-color candid photograph equipment Body frame structure internal image executes redundancy parsing, to obtain the first redundancy parameter;
Second parameter acquisition device executes redundancy parsing to the Lai Natu, to obtain second for receiving the Lai Natu Redundancy parameter;
Parameter compares equipment, connect respectively with first parameter acquisition device and second parameter acquisition device, for connecing It receives the first redundancy parameter and the second redundancy parameter, and is more than or equal to described the in the second redundancy parameter When one redundancy parameter, the first control instruction is issued, is the three of the second redundancy parameter in the first redundancy parameter Times or more when, issue third control instruction, and be three times of the second redundancy parameter in the first redundancy parameter When between to two times, the second control instruction is issued;
Channel processing equipment, equipment connects compared with the parameter, for activating red when receiving second control instruction Chrominance channel enhances equipment to execute red channel enhancing processing to the body frame structure internal image, and obtains and export and is corresponding logical Road handles image, is also used to when receiving the third control instruction, and activation full tunnel enhancing equipment is to the body frame structure Internal image be performed simultaneously red channel enhancing processing, green channel enhancing processing and blue channel enhancing processing, and obtain and Export corresponding channel processing image;
Subgraph extract equipment is connect with the channel processing equipment, described logical for being extracted based on damper imaging features Road handles the damper subgraph in image;
Red channel enhances equipment, for executing red channel enhancing processing to input picture in state of activation, in inactive shape State stops the red channel enhancing to input picture and handles;
Full tunnel enhances equipment, for being performed simultaneously red channel enhancing processing, green channel to input picture in state of activation Enhancing processing and blue channel enhancing processing, stop at the red channel enhancing being performed simultaneously to input picture in unactivated state Reason, green channel enhancing processing and blue channel enhancing processing;
Wherein, the shape compares equipment and is also used to issue when the similarity is optionally greater than the preset percentage threshold value Shape standard signal.
6. damper as claimed in claim 5 deforms identification systems, it is characterised in that:
The channel processing equipment is also used to when receiving first control instruction, using the body frame structure internal image as Channel handles image output.
7. damper as claimed in claim 6 deforms identification systems, which is characterized in that the system also includes:
Instant processing equipment is connect with the full-color candid photograph equipment, for executing Gaussian Blur to the body frame structure internal image Filtering processing, to obtain and export corresponding fuzzy filter image;
Homomorphic filtering equipment is connect with the instant processing equipment, for receiving the fuzzy filter image, to the fuzzy filter Wave image executes homomorphic filtering processing, to obtain and export corresponding homomorphic filtering image.
8. damper as claimed in claim 7 deforms identification systems, which is characterized in that the system also includes:
Profile identification apparatus is connect with the homomorphic filtering equipment, for receiving the homomorphic filtering image, is based on predetermined luminance Threshold value executes object outline identification to the homomorphic filtering image, to obtain one or more of described homomorphic filtering image pair As profile;
Area analysis equipment is connect, for receiving one or more of object outlines, and right with the profile identification apparatus When the ratio that the area surrounded as profile occupies the homomorphic filtering image area is more than preset ratio threshold value, the object is determined The corresponding object of profile is effective object.
9. damper as claimed in claim 8 deforms identification systems, which is characterized in that the system also includes:
Object extraction equipment is connect, for receiving respectively with first parameter acquisition device and the area analysis equipment State the effective object of one or more of homomorphic filtering image, and based on object depth to one or more of effective objects into The sequence of row from big to small, the region that effective object that object depth ranks behind is occupied in the homomorphic filtering image are made For region to be analyzed, and the region to be analyzed replaced into the body frame structure internal image it is sent to the first parameter acquisition and set It is standby;
FLASH storage chip is connect with the area analysis equipment and the object extraction equipment respectively, described pre- for storing If luminance threshold and the preset ratio threshold value;
Wherein, the region effective object that object depth ranks behind occupied in the homomorphic filtering image is as to be analyzed Region output includes: the multiple effective objects for one or more of effective number of objects half that object depth ranks behind The region occupied in the homomorphic filtering image is exported as region to be analyzed.
CN201811581191.XA 2018-12-24 2018-12-24 Damper deforms identification systems CN109635877A (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN86203612U (en) * 1986-05-27 1987-02-18 宁夏回族自治区文化厅 Touching multifunction electronic organ
CN85107845A (en) * 1985-11-02 1987-08-05 陈长元 Voice controlled electronic organ
CN2042619U (en) * 1988-07-06 1989-08-09 董健 All-timbre electronic piano
CN1377024A (en) * 2002-04-28 2002-10-30 蒋恩凤 Electronic stereophonic organ
CN101546550A (en) * 2008-03-24 2009-09-30 雅马哈株式会社 Pedal apparatus of electronic musical instrument
US20100107852A1 (en) * 2008-11-04 2010-05-06 Leigh Howard Stevens Keyboard percussion instrument and dampening system for use therewith
CN203026112U (en) * 2013-01-21 2013-06-26 洛阳理工学院 Wireless electronic piano system
CN205680421U (en) * 2016-06-08 2016-11-09 森鹤乐器股份有限公司 A kind of Horizontal piano aluminum sound shelves

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN85107845A (en) * 1985-11-02 1987-08-05 陈长元 Voice controlled electronic organ
CN86203612U (en) * 1986-05-27 1987-02-18 宁夏回族自治区文化厅 Touching multifunction electronic organ
CN2042619U (en) * 1988-07-06 1989-08-09 董健 All-timbre electronic piano
CN1377024A (en) * 2002-04-28 2002-10-30 蒋恩凤 Electronic stereophonic organ
CN101546550A (en) * 2008-03-24 2009-09-30 雅马哈株式会社 Pedal apparatus of electronic musical instrument
US20100107852A1 (en) * 2008-11-04 2010-05-06 Leigh Howard Stevens Keyboard percussion instrument and dampening system for use therewith
CN203026112U (en) * 2013-01-21 2013-06-26 洛阳理工学院 Wireless electronic piano system
CN205680421U (en) * 2016-06-08 2016-11-09 森鹤乐器股份有限公司 A kind of Horizontal piano aluminum sound shelves

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