CN111724756B - Automatic notation recording device for piano - Google Patents
Automatic notation recording device for piano Download PDFInfo
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- CN111724756B CN111724756B CN201910219635.3A CN201910219635A CN111724756B CN 111724756 B CN111724756 B CN 111724756B CN 201910219635 A CN201910219635 A CN 201910219635A CN 111724756 B CN111724756 B CN 111724756B
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10G—REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS
- G10G3/00—Recording music in notation form, e.g. recording the mechanical operation of a musical instrument
- G10G3/04—Recording music in notation form, e.g. recording the mechanical operation of a musical instrument using electrical means
Abstract
The invention discloses an automatic notation device for a piano, which comprises a microcomputer, a signal processor, a key board and a sensor group, wherein the sensor group is electrically connected with the microcomputer and the signal processor in sequence, the sensor group consists of a plurality of pressure sensors, a plurality of keys are arranged on the key board, the pressure sensors and the keys are arranged in a one-to-one correspondence manner, a mounting and fixing plate is arranged at the bottom of the key board, a mounting groove is formed in the top of the mounting and fixing plate, a pushing plate is arranged in the mounting groove in a sliding manner, the sensor group is fixedly arranged at the top of the pushing plate, two pushing rods are fixedly arranged at the bottom of the pushing plate, and the same connecting transverse plate is fixedly arranged at the bottoms of the two pushing rods. The invention can automatically record the music score, meets the use requirements of people, is convenient to install and fix, saves time and labor, is convenient to adjust the distance between the pressure sensor and the key, meets the actual use requirements, and has simple structure and convenient use.
Description
Technical Field
The invention relates to the technical field of automatic notation of pianos, in particular to an automatic notation recording device of a piano.
Background
The piano (Italian: pinaofort) is a keyboard instrument in Western classical music, has a name of 'king of instrument', consists of 88 keys (52 white keys and 36 black keys) and a metal string sound board, the Italian person Butuo Mimeo-Crisdori invented the piano in 1709, the range of the piano from A0 (27.5 Hz) to C8 (4186 Hz) almost covers all tones in the tone system, the instrument is the instrument with the widest range except for the organ, the piano is generally used for performance such as solo, replay, accompaniment and the like, the music composition and the music practice are very convenient, a player pushes the keys on the keyboard, pulls a small mallet with a felt in the piano, then taps the steel wire strings to make a sound, and the piano needs regular nursing to ensure that the tone color of the piano is not changed.
The existing piano is inconvenient to automatically register the music score, the music score is required to be used every time, the operation is troublesome, and the use requirements of people cannot be met, so that the piano automatic music score recording device is provided for solving the problems.
Disclosure of Invention
Based on the technical problems in the background art, the invention provides an automatic notation recording device for a piano.
The invention provides an automatic notation device for a piano, which comprises a microcomputer, a signal processor, a key board and a sensor group, wherein the sensor group is electrically connected with the microcomputer and the signal processor in sequence, the sensor group consists of a plurality of pressure sensors, the key board is provided with a plurality of keys, the pressure sensors and the keys are arranged in a one-to-one correspondence manner, the bottom of the key board is provided with a mounting and fixing plate, the top of the mounting and fixing plate is provided with a mounting groove, a pushing plate is arranged in the mounting groove in a sliding manner, the sensor group is fixedly arranged at the top of the pushing plate, the bottom of the pushing plate is fixedly provided with two pushing rods, the bottoms of the two pushing rods are fixedly provided with a same connecting transverse plate, the bottom of the mounting and fixing plate is provided with a rotating groove, the rotating groove is positioned between the two pushing rods, the rotating groove is internally and rotatably provided with a screw rod, and the screw rod is in threaded connection with the connecting transverse plate, the two sides of the key plate are fixedly provided with side plates, one side of each side plate, which is close to each other, is fixedly provided with a fixed clamping groove, the two sides of the installation fixing plate are respectively provided with a rectangular sliding groove, rectangular clamping blocks are respectively and slidably arranged in the two rectangular sliding grooves, the bottoms of the two rectangular clamping blocks are respectively provided with a sliding groove, a rectangular sliding plate is respectively and slidably arranged in the two sliding grooves, the bottoms of the two rectangular sliding plates are respectively and fixedly provided with a pulling rod, the bottoms of the two pulling rods extend to the lower part of the installation fixing plate and are fixedly provided with a pulling plate, the tops of the two pulling plates are respectively and fixedly provided with a connecting and fixing block, the bottom of the installation fixing plate is provided with two connecting and fixing grooves, the two connecting and fixing blocks are respectively and fixedly arranged with the two connecting and fixing grooves, and one end of a plurality of springs is fixedly arranged at the top of the rectangular sliding plate, the other end of the spring is welded with the inner wall of the top of the sliding groove.
Preferably, one side of two curb plates that are close to each other is all seted up and is established to open-ended spacing rectangular channel, and the equal fixed mounting in both sides of installation fixed plate has spacing rectangular block, and two spacing rectangular blocks clamp with two spacing rectangular channels respectively mutually.
Preferably, the bottom end of the screw rod extends to the lower part of the mounting fixing plate and is fixedly provided with a rotating block, and the rotating block is positioned below the connecting transverse plate.
Preferably, two slide holes are formed in the bottom of the mounting fixing plate, the two slide holes are communicated with the mounting groove, and the two push rods are respectively connected with the side walls of the two slide holes in a sliding mode.
Preferably, two connecting holes are formed in the bottom of the mounting fixing plate, the two connecting holes are respectively communicated with the two rectangular sliding grooves, and the bottom ends of the two pulling rods respectively penetrate through the two connecting holes.
Preferably, the inner walls of the two sides of the sliding groove are provided with sliding grooves, the two sides of the rectangular sliding plate are fixedly provided with sliding blocks, and the sliding blocks are connected with the side walls of the sliding grooves in a sliding mode.
Preferably, an outer ring of the bearing is fixedly installed in the rotating groove, and an inner ring of the bearing is welded with the outer side of the screw rod.
Preferably, the connecting transverse plate is provided with a threaded hole, and the screw rod is in threaded connection with the threaded hole.
The invention has the beneficial effects that:
through the cooperation of a microcomputer, a signal processor, a key board, a sensor group, a mounting fixing plate, a mounting groove, a pushing plate, a sliding hole, a pushing rod, a connecting transverse plate, a rotating groove and a screw rod and a rotating block, when the device is used, the piano keys on the key board act on the pressure sensor, the pressure sensor transmits signals to the signal processor, the signal processor matches the signals and converts the signals into staff signals, the staff signals are transmitted to the microcomputer for storage, the rotating block drives the screw rod to rotate, the screw rod is in threaded connection with the connecting transverse plate, so the screw rod rotates to drive the connecting transverse plate to vertically slide, the connecting transverse plate drives the pushing plate to move through the two pushing rods, and the pushing plate drives the sensor group to move, so that the distance between the sensor group and the piano keys can be adjusted;
the mounting and fixing of the mounting and fixing plate are completed by matching the side plates, the limiting rectangular grooves, the limiting rectangular blocks, the rectangular sliding grooves, the rectangular clamping blocks, the fixing clamping grooves, the sliding grooves, the rectangular sliding plates, the pulling rods, the pulling plates, the connecting fixing blocks, the connecting fixing grooves, the springs and the connecting holes, clamping two limiting rectangular blocks fixedly mounted at two sides of the mounting and fixing plate into the two limiting rectangular grooves from one side of the two side plates during mounting, pulling the two pulling plates to move downwards, driving the two connecting fixing blocks to move by the two pulling plates, driving the two rectangular sliding plates to move downwards by the two pulling rods, stretching the springs under force at the moment, pulling the two pulling plates to move towards opposite directions, so that the two rectangular clamping blocks are clamped into the two fixing clamping grooves, and finally loosening the two pulling plates;
the invention can automatically record the music score, meets the use requirements of people, is convenient to install and fix, saves time and labor, is convenient to adjust the distance between the pressure sensor and the key, meets the actual use requirements, and has simple structure and convenient use.
Drawings
FIG. 1 is a schematic structural diagram of an automatic notation recording device for a piano according to the present invention;
FIG. 2 is a schematic structural view of part A of an automatic notation device for piano according to the present invention;
FIG. 3 is a schematic structural diagram of part B of an automatic notation device for piano according to the present invention;
FIG. 4 is a schematic structural view of part C of an automatic notation device for piano according to the present invention;
fig. 5 is a schematic perspective view of the connection between the rectangular slide plate and the slide block of the automatic notation recording device for pianos according to the present invention.
In the figure: the device comprises a microcomputer 1, a signal processor 2, a 3 key board, a 4 sensor group, a 5 installation fixing board, a 6 installation groove, a 7 pushing board, a 8 sliding hole, a 9 pushing rod, a 10 connecting transverse board, a 11 rotating groove, a 12 screw rod, a 13 rotating block, a 14 side board, a 15 limiting rectangular groove, a 16 limiting rectangular block, a 17 rectangular sliding groove, a 18 rectangular clamping block, a 19 fixing clamping groove, a 20 sliding groove, a 21 rectangular sliding board, a 22 pulling rod, a 23 pulling board, a 24 connecting fixing block, a 25 connecting fixing groove, a 26 spring and a 27 connecting hole.
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Examples
Referring to fig. 1-5, the embodiment provides an automatic notation device for a piano, which comprises a microcomputer 1, a signal processor 2, a key board 3 and a sensor group 4, wherein the sensor group 4 is electrically connected with the microcomputer 1 and the signal processor 2 in sequence, the sensor group 4 is composed of a plurality of pressure sensors, a plurality of keys are arranged on the key board 3, the plurality of pressure sensors and the plurality of keys are arranged in a one-to-one correspondence manner, a mounting and fixing plate 5 is installed at the bottom of the key board 3, a mounting groove 6 is formed at the top of the mounting and fixing plate 5, a pushing plate 7 is slidably installed in the mounting groove 6, the sensor group 4 is fixedly installed at the top of the pushing plate 7, two pushing rods 9 are fixedly installed at the bottom of the pushing plate 7, the same connecting transverse plate 10 is fixedly installed at the bottoms of the two pushing rods 9, a rotating groove 11 is formed at the bottom of the mounting and fixing plate 5, and the rotating groove 11 is located between the two pushing rods 9, a screw 12 is rotatably mounted in the rotating groove 11, the screw 12 is in threaded connection with the connecting transverse plate 10, side plates 14 are fixedly mounted on both sides of the key plate 3, a fixed clamping groove 19 is fixedly mounted on one side of each side plate 14 close to each other, rectangular sliding grooves 17 are formed in both sides of the mounting fixing plate 5, rectangular clamping blocks 18 are slidably mounted in the two rectangular sliding grooves 17, the two rectangular clamping blocks 18 are respectively clamped with the two fixed clamping grooves 19, sliding grooves 20 are formed in the bottoms of the two rectangular clamping blocks 18, rectangular sliding plates 21 are slidably mounted in the two sliding grooves 20, pulling rods 22 are fixedly mounted at the bottoms of the two rectangular sliding plates 21, the bottoms of the two pulling rods 22 extend to the lower side of the mounting fixing plate 5 and are fixedly mounted with pulling plates 23, connecting fixing blocks 24 are fixedly mounted at the tops of the two pulling plates 23, and two connecting fixing grooves 25 are formed at the bottom of the mounting fixing plate 5, the two connecting and fixing blocks 24 are respectively clamped with the two connecting and fixing grooves 25, one ends of a plurality of springs 26 are fixedly mounted at the top of the rectangular sliding plate 21, the other ends of the springs 26 are welded with the inner wall of the top of the sliding groove 20, when the keyboard is used, keys on the keyboard 3 act on the pressure sensors, the pressure sensors transmit signals to the signal processor 2, the signal processor 2 matches the signals, the signals are converted into staff signals and transmitted to the microcomputer 1 for storage, the screw 12 is driven to rotate by the rotating block 13, the screw 12 is in threaded connection with the connecting transverse plate 10, the connecting transverse plate 10 can be driven to vertically slide by the rotation of the screw 12, the pushing plate 7 is driven to move by the connecting transverse plate 10 through the two pushing rods 9, and the sensor group 4 is driven to move by the pushing plate 7, so that the distance between the sensor group 4 and the key can be adjusted; the side plates 14, the limiting rectangular grooves 15, the limiting rectangular blocks 16, the rectangular sliding grooves 17, the rectangular fixture blocks 18, the fixed clamping grooves 19, the sliding grooves 20, the rectangular sliding plates 21, the pulling rods 22, the pulling plates 23, the connecting fixed blocks 24, the connecting fixed grooves 25, the springs 26 and the connecting holes 27 are matched, when the mounting device is mounted, the two limiting rectangular blocks 16 fixedly mounted on two sides of the mounting and fixing plate 5 are clamped into the two limiting rectangular grooves 15 from one sides of the two side plates 14, then the two pulling plates 23 are pulled to move downwards, the two pulling plates 23 drive the two connecting fixed blocks 24 to move, meanwhile, the two pulling plates 23 drive the two rectangular sliding plates 21 to move downwards through the two pulling rods 22, at the moment, the springs 26 are stressed and stretched, then the two pulling plates 23 are pulled to move towards opposite directions, so that the two rectangular fixture blocks 18 are clamped into the two fixed clamping grooves 19, and finally, the two pulling plates 23 are loosened, and under the action of the springs 26, the connecting fixed blocks 24 are reset and clamped into the connecting fixed grooves 25, and the mounting and the fixing groove 5 is fixed; the invention can automatically record the music score, meets the use requirements of people, is convenient to install and fix, saves time and labor, is convenient to adjust the distance between the pressure sensor and the key, meets the actual use requirements, and has simple structure and convenient use.
In this embodiment, one side of each of the two side plates 14, which is close to each other, is provided with a limiting rectangular groove 15, one side of each of the two side plates is provided with an opening, two sides of the mounting and fixing plate 5 are fixedly provided with a limiting rectangular block 16, the two limiting rectangular blocks 16 are respectively clamped with the two limiting rectangular grooves 15, the bottom end of the screw rod 12 extends to the lower side of the mounting and fixing plate 5 and is fixedly provided with a rotating block 13, the rotating block 13 is positioned below the connecting transverse plate 10, the bottom of the mounting and fixing plate 5 is provided with two sliding holes 8, the two sliding holes 8 are both communicated with the mounting groove 6, the two pushing rods 9 are respectively slidably connected with the side walls of the two sliding holes 8, the bottom of the mounting and fixing plate 5 is provided with two connecting holes 27, the two connecting holes 27 are respectively communicated with the two rectangular sliding grooves 17, the bottom ends of the two pulling rods 22 are respectively communicated with the two connecting holes 27, the inner walls of the two sides of the sliding grooves 20 are both provided with sliding grooves, the two sides of a rectangular sliding plate 21 are fixedly provided with sliding blocks, the sliding blocks are connected with the side wall of a sliding groove in a sliding manner, the inner ring of a bearing is fixedly arranged in a rotating groove 11, the outer ring of the bearing is welded with the outer side of a screw rod 12, a threaded hole is arranged on a connecting transverse plate 10, the screw rod 12 is in threaded connection with the threaded hole, when the device is used, a piano key on the key plate 3 acts on a pressure sensor by virtue of a microcomputer 1, a signal processor 2, a key plate 3, a sensor group 4, a mounting fixing plate 5, a mounting groove 6, a push plate 7, a sliding hole 8, a push rod 9, the connecting transverse plate 10, the rotating groove 11, the screw rod 12 and a rotating block 13, the pressure sensor transmits signals to the signal processor 2, the signal processor 2 matches the signals, converts the signals into staff signals, then transmits the staff signals to the microcomputer 1 for storage, the screw rod 12 is driven by the rotating block 13 to rotate, and the screw rod 12 is in threaded connection with the connecting transverse plate 10, the screw 12 rotates to drive the connecting transverse plate 10 to vertically slide, the connecting transverse plate 10 drives the pushing plate 7 to move through the two pushing rods 9, and the pushing plate 7 drives the sensor group 4 to move, so that the distance between the sensor group 4 and the keys can be adjusted; the side plates 14, the limiting rectangular grooves 15, the limiting rectangular blocks 16, the rectangular sliding grooves 17, the rectangular fixture blocks 18, the fixed clamping grooves 19, the sliding grooves 20, the rectangular sliding plates 21, the pulling rods 22, the pulling plates 23, the connecting fixed blocks 24, the connecting fixed grooves 25, the springs 26 and the connecting holes 27 are matched, when the mounting device is mounted, the two limiting rectangular blocks 16 fixedly mounted on two sides of the mounting and fixing plate 5 are clamped into the two limiting rectangular grooves 15 from one sides of the two side plates 14, then the two pulling plates 23 are pulled to move downwards, the two pulling plates 23 drive the two connecting fixed blocks 24 to move, meanwhile, the two pulling plates 23 drive the two rectangular sliding plates 21 to move downwards through the two pulling rods 22, at the moment, the springs 26 are stressed and stretched, then the two pulling plates 23 are pulled to move towards opposite directions, so that the two rectangular fixture blocks 18 are clamped into the two fixed clamping grooves 19, and finally, the two pulling plates 23 are loosened, and under the action of the springs 26, the connecting fixed blocks 24 are reset and clamped into the connecting fixed grooves 25, and the mounting and the fixing groove 5 is fixed; the invention can automatically record the music score, meets the use requirements of people, is convenient to install and fix, saves time and labor, is convenient to adjust the distance between the pressure sensor and the key, meets the actual use requirements, and has simple structure and convenient use.
In this embodiment, when the device is used, the piano keys on the key board 3 act on the pressure sensors, the pressure sensors transmit signals to the signal processor 2, the signal processor 2 matches the signals, the signals are converted into staff signals, the staff signals are transmitted to the microcomputer 1 for storage, the screw rods 12 are driven to rotate by the rotating blocks 13, the screw rods 12 are in threaded connection with the connecting transverse plate 10, the connecting transverse plate 10 can be driven to vertically slide by the rotation of the screw rods 12, the connecting transverse plate 10 drives the pushing plates 7 to move through the two pushing rods 9, the sensor group 4 is driven to move through the pushing plates 7, so that the distance between the sensor group 4 and the keys can be adjusted, during installation, the two limiting rectangular blocks 16 fixedly installed on two sides of the installation fixing plate 5 are clamped into the two limiting rectangular grooves 15 from one side of the two side plates 14, then the two pulling plates 23 are pulled to move downwards, the two pulling plates 23 drive the two connecting fixing blocks 24 to move, meanwhile the two pulling plates 23 drive the two rectangular sliding plates 21 to move downwards through the two pulling plates 22, at this time, the spring 26 is stressed, then the two pulling plates 23 are pulled to move towards opposite directions, so that the two fixing blocks 18 are clamped into the fixing grooves 19, and the fixing grooves 24 are loosened, and the fixing block 24 is finally the fixing plate 24 is reset, and the fixing groove 25 is installed, and the spring 26 is reset.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. An automatic piano score recording device comprises a microcomputer (1), a signal processor (2), a keyboard (3) and a sensor group (4), wherein the sensor group (4) is electrically connected with the microcomputer (1) and the signal processor (2) in sequence, the sensor group (4) consists of a plurality of pressure sensors, a plurality of keys are arranged on the keyboard (3), the pressure sensors and the keys are arranged in a one-to-one correspondence manner, the automatic piano score recording device is characterized in that a mounting and fixing plate (5) is installed at the bottom of the keyboard (3), a mounting groove (6) is formed in the top of the mounting and fixing plate (5), a pushing plate (7) is installed in the mounting groove (6) in a sliding manner, the sensor group (4) is fixedly installed at the top of the pushing plate (7), two pushing rods (9) are fixedly installed at the bottom of the pushing plate (7), the same connecting transverse plate (10) is fixedly installed at the bottoms of the two pushing rods (9), a rotating groove (11) is formed in the bottom of the mounting and fixing plate (5), a clamping groove (11) is located between the two pushing rods (12) and a screw rod (12) is fixedly installed at one side of the transverse plate (14), and a side plate (14) is fixedly installed at one side close to the side of the transverse plate (3), rectangular sliding grooves (17) have all been seted up to the both sides of installation fixed plate (5), equal slidable mounting has rectangular fixture block (18) in two rectangular sliding grooves (17), two rectangular fixture block (18) clamp with two fixed slot (19) respectively mutually, sliding groove (20) have all been seted up to the bottom of two rectangular fixture block (18), equal slidable mounting has rectangular slide (21) in two sliding grooves (20), the equal fixed mounting in bottom of two rectangular slide (21) has pulling rod (22), the bottom of two pulling rod (22) all extends to the below of installation fixed plate (5) and fixed mounting has pull plate (23), the equal fixed mounting in top of two pull plates (23) has connection fixed block (24), two connection fixed slot (25) have been seted up to the bottom of installation fixed plate (5), two connection fixed block (24) clamp with two connection fixed slot (25) respectively mutually, the top fixed mounting of rectangular slide (21) has the one end of a plurality of springs (26), the other end of spring (26) welds with the top inner wall of sliding groove (20) mutually.
2. The automatic notation device for piano of claim 1, wherein one side of each of the two side plates (14) close to each other is provided with a rectangular limiting groove (15) with an opening at one side, two sides of the mounting fixing plate (5) are fixedly provided with rectangular limiting blocks (16), and the two rectangular limiting blocks (16) are respectively clamped with the two rectangular limiting grooves (15).
3. The automatic notation device for piano of claim 1, wherein the bottom end of the screw rod (12) extends to the lower part of the fixing plate (5) and is fixedly provided with a rotating block (13), and the rotating block (13) is positioned below the connecting transverse plate (10).
4. The automatic notation device for piano of claim 1, wherein the bottom of the mounting fixing plate (5) is provided with two sliding holes (8), the two sliding holes (8) are both communicated with the mounting groove (6), and the two pushing rods (9) are respectively connected with the side walls of the two sliding holes (8) in a sliding manner.
5. The automatic notation device for piano of claim 1, wherein the bottom of the mounting and fixing plate (5) is provided with two connecting holes (27), the two connecting holes (27) are respectively communicated with the two rectangular sliding grooves (17), and the bottom ends of the two pulling rods (22) respectively penetrate through the two connecting holes (27).
6. The automatic notation device for piano of claim 1, wherein sliding grooves are formed on the inner walls of the two sides of the sliding groove (20), sliding blocks are fixedly mounted on the two sides of the rectangular sliding plate (21), and the sliding blocks are slidably connected with the side walls of the sliding grooves.
7. A piano automatic register device according to claim 1, wherein the outer race of the bearing is fixedly installed in the rotary groove (11), and the inner race of the bearing is welded to the outer side of the screw rod (12).
8. The automatic notation device for piano of claim 1, wherein the connecting cross plate (10) is provided with a threaded hole, and the screw rod (12) is in threaded connection with the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910219635.3A CN111724756B (en) | 2019-03-21 | 2019-03-21 | Automatic notation recording device for piano |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910219635.3A CN111724756B (en) | 2019-03-21 | 2019-03-21 | Automatic notation recording device for piano |
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| Publication Number | Publication Date |
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| CN111724756A CN111724756A (en) | 2020-09-29 |
| CN111724756B true CN111724756B (en) | 2023-03-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910219635.3A Active CN111724756B (en) | 2019-03-21 | 2019-03-21 | Automatic notation recording device for piano |
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| US4913026A (en) * | 1988-01-29 | 1990-04-03 | Yamaha Corporation | Automatic player piano with touch strength estimator |
| JP2001272910A (en) * | 2000-03-24 | 2001-10-05 | Yamaha Corp | Operating element operation guide device, key touch guide device and operation guide device |
| CN203982757U (en) * | 2014-05-16 | 2014-12-03 | 刘宝璋 | A kind of piano |
| CN204760013U (en) * | 2015-07-15 | 2015-11-11 | 潘宝城 | Piano with automatic note register for easy reference function |
| CN207124029U (en) * | 2017-09-18 | 2018-03-20 | 温州乐发教育科技有限公司 | Chargeable fender |
| CN207441226U (en) * | 2017-12-07 | 2018-06-01 | 大庆师范学院 | Music-book on pianoforte apparatus for placing |
| CN108648736A (en) * | 2018-05-30 | 2018-10-12 | 张建阳 | A kind of fender key plays dynamics adjusting apparatus |
| CN208569922U (en) * | 2017-12-26 | 2019-03-01 | 于斯智能乐器(深圳)有限公司 | Piano auxiliary practice device and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090282962A1 (en) * | 2008-05-13 | 2009-11-19 | Steinway Musical Instruments, Inc. | Piano With Key Movement Detection System |
| JP6572252B2 (en) * | 2017-04-04 | 2019-09-04 | Ｇｖｉｄｏ Ｍｕｓｉｃ株式会社 | Electronic music score device |
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- 2019-03-21 CN CN201910219635.3A patent/CN111724756B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4913026A (en) * | 1988-01-29 | 1990-04-03 | Yamaha Corporation | Automatic player piano with touch strength estimator |
| JP2001272910A (en) * | 2000-03-24 | 2001-10-05 | Yamaha Corp | Operating element operation guide device, key touch guide device and operation guide device |
| CN203982757U (en) * | 2014-05-16 | 2014-12-03 | 刘宝璋 | A kind of piano |
| CN204760013U (en) * | 2015-07-15 | 2015-11-11 | 潘宝城 | Piano with automatic note register for easy reference function |
| CN207124029U (en) * | 2017-09-18 | 2018-03-20 | 温州乐发教育科技有限公司 | Chargeable fender |
| CN207441226U (en) * | 2017-12-07 | 2018-06-01 | 大庆师范学院 | Music-book on pianoforte apparatus for placing |
| CN208569922U (en) * | 2017-12-26 | 2019-03-01 | 于斯智能乐器(深圳)有限公司 | Piano auxiliary practice device and system |
| CN108648736A (en) * | 2018-05-30 | 2018-10-12 | 张建阳 | A kind of fender key plays dynamics adjusting apparatus |
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| CN111724756A (en) | 2020-09-29 |
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