CN216957425U - Finger-pressing type digital harmonica - Google Patents
Finger-pressing type digital harmonica Download PDFInfo
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- CN216957425U CN216957425U CN202220071009.1U CN202220071009U CN216957425U CN 216957425 U CN216957425 U CN 216957425U CN 202220071009 U CN202220071009 U CN 202220071009U CN 216957425 U CN216957425 U CN 216957425U
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- harmonica
- finger
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- pressure
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Abstract
The utility model provides a finger-pressing type digital harmonica which comprises a harmonica body and a circuit board, wherein a plurality of blowing ports are formed in the harmonica body, each blowing port is correspondingly provided with a blowing and sucking pressure sensor for sensing blowing and sucking air pressure, the blowing and sucking pressure sensors are in signal connection with the circuit board, an air cavity is formed in the position, corresponding to one side surface of the harmonica body, an air hole for communicating the air cavity with the outside atmosphere is further formed in the position, corresponding to the air cavity, of the surface of the harmonica body, the finger-pressing pressure sensors are sealed and fixed corresponding to the opening surfaces of the harmonica body, the signal detection directions of the finger-pressing pressure sensors point to the air cavity and sense air pressure change signals in the air cavity, and the finger-pressing pressure sensors are in signal connection with the circuit board. The utility model designs a closed air cavity on the basis of the existing digital harmonica, and is matched with a finger pressure sensor, when the digital harmonica is played, the pressure sensor is pressed and blocked by fingers at the air cavity, so that the pressure signal of the air cavity is conveniently converted into a MIDI signal for controlling the sound of the digital harmonica, and the tone color of the digital harmonica is enriched.
Description
Technical Field
The utility model relates to the field of musical instruments, in particular to a finger-pressing type digital harmonica.
Background
The digital harmonica is an electronic harmonica designed by combining a pressure sensor, a circuit board, a MIDI sound source chip and the like on the basis of the traditional harmonica. At present, the existing electronic harmonica adopts a blowing and sucking pressure sensor to acquire air flow and pressure change generated during playing, and music is transmitted, debugged and output through signals. However, the existing electronic harmonica has no other special control means for controlling playing in practical application. The tone of the harmonica is converted only through the induction signal of the blowing air flow, the blowing and output modes are single, hand actions are combined in tone signal extraction of the harmonica, and a space for further improvement and design exists.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: in order to overcome the defects of the prior art, the utility model provides a digital harmonica which can be pressed and blocked at an air hole by fingers on the basis of playing of the prior digital harmonica, and is convenient for converting air cavity pressure signals into air cavity pressure signalsControl ofDigital harmonica hairMIDI signals of the tone, and the finger-pressing type digital harmonica effectively enriches the tone color.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a finger-pressure formula digit mouth organ, includes the organ body and circuit board, the organ body on have a plurality of bleaches, every blow-up all corresponds the pressure sensor that blows of perception and sucks air pressure, pressure sensor and circuit board signal connection blow, the organ body on correspond organ body side surface and be equipped with the air cavity, the organ body surface correspond the air cavity position and still opened intercommunication air cavity and external atmospheric air pocket the air cavity correspond organ body opening surface sealed and be fixed with finger-pressure sensor, finger-pressure sensor's the directional air cavity of signal detection direction in and the atmospheric pressure change signal of sensing air cavity, finger-pressure sensor and circuit board signal connection.
In the above scheme, on the basis of the existing digital harmonica, add and establish the air cavity, finger pressure sensor and gas pocket, press the shutoff gas pocket through the finger when playing, formed control pressure to the air cavity, this pressure is detected and is converted into the signal of telecommunication that represents finger control dynamics and change by finger pressure sensor, and with this signal of telecommunication transmission to circuit board confession processing, be convenient for realize converting air cavity pressure signal into the MIDI signal of controlling the pronunciation of digital harmonica in digital harmonica, the tone quality of digital harmonica has been enriched, the performance of controlling of playing has been improved.
Preferably, the position of the surface of the musical instrument body, corresponding to the air cavity, is hermetically covered with a hydrophobic breathable film, and the finger pressure sensor is in compression joint with the outer side face of the hydrophobic breathable film. Hydrophobic ventilated membrane can be convenient for the air current when the shutoff gas pocket is pressed to the finger and pass through for finger pressure sensor can experience the pressure signal that atmospheric pressure changes, can filter the aqueous vapor again, effectively protects finger pressure sensor not to receive aqueous vapor to corrode, guarantees the life of harmonica.
The finger-pressing type digital harmonica has the beneficial effects that the structure design is reasonable, the closed air cavity is designed on the basis of the existing digital harmonica and is matched with the finger-pressing pressure sensor, and when the digital harmonica is played, the pressure signal of the air cavity is conveniently converted into a MIDI signal for controlling the sound of the digital harmonica through the pressing and blocking of fingers at the air hole, so that the tone of the digital harmonica is enriched.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a partial cross-sectional view of the preferred embodiment of the present invention at the air cavity.
In the figure, the musical instrument comprises a musical instrument body 1, a mouthpiece 3, a blowing and sucking pressure sensor 4, a hydrophobic breathable film 5, an air cavity 6, an air hole 7, a finger pressure sensor 8 and a circuit board.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic diagrams illustrating the basic structure of the present invention only in a schematic manner, and thus show only the constitution related to the present invention, and directions and references (e.g., upper, lower, left, right, etc.) may be used only to help the description of the features in the drawings. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the claimed subject matter is defined only by the appended claims and equivalents thereof.
The finger-pressing digital harmonica shown in fig. 1 is the best embodiment of the utility model. This finger-pressure formula digital harmonica includes the organ body 1 and circuit board 8, has a plurality of mouthpiece 2 on the organ body 1, and every mouthpiece 2 all corresponds the pressure sensor 3 that blows of being equipped with the perception pressure of inhaling, blows pressure sensor 3 and 8 signal connection on the circuit board.
An air cavity 5 is arranged on the surface of the body 1 corresponding to one side of the body 1, and an air hole 6 for communicating the air cavity 5 with the outside air is further formed in the surface of the body 1 corresponding to the position of the air cavity 5. The air cavity 5 is covered with a hydrophobic breathable film 4 corresponding to the opening surface of the piano body 1 in a sealing way. The finger pressure sensor 7 is pressed on the outer side surface of the hydrophobic breathable film 4. The hydrophobic breathable film 4 can preferably be an expanded polytetrafluoroethylene film having micropores which can block various particles and allow air to pass through, so as to facilitate air flow, and can filter moisture at the same time, thereby avoiding the moisture from corroding the finger pressure sensor 7.
The signal detection direction of the finger pressure sensor 7 points to the air cavity 5, and the finger pressure sensor 7 is in signal connection with the circuit board 8 and is used for sensing an air pressure change signal in the air cavity 5. The number of the finger pressure sensors 7 can be designed according to requirements, so that the pressure signals of the air cavity can be conveniently converted into MIDI signals for controlling the sound of the digital harmonica. The circuit board 8 is provided with an analog circuit, a MIDI sound source chip and the like, the circuit board 8 can process the signal after receiving the electric signal of the finger pressure sensor 7, and then the signal is processed in an analog mode through the analog circuit, and the corresponding audio signal is output through the MIDI sound source chip, so that subsequent amplified loudspeaking output is facilitated.
The finger-pressing digital harmonica is additionally provided with an air cavity 5, a finger-pressing pressure sensor 7 and an air hole 6 on the basis of the existing digital harmonica. When playing, the air hole 6 is blocked by pressing the fingers, control pressure is formed on the air cavity 5, the pressure is detected by the finger pressure sensor 7 and converted into an electric signal representing the change of finger control force, and the electric signal is transmitted to the circuit board 8 for processing, so that tone simulation can be realized in playing of the digital harmonica, the tone of the digital harmonica is enriched, and the playing control performance is improved. Hydrophobic ventilated membrane 4 can be convenient for the air current when the shutoff gas pocket 6 is pressed to the finger simultaneously and pass through for finger pressure sensor 7 can experience the pressure signal that atmospheric pressure changes, can filter the aqueous vapor again, effectively protects finger pressure sensor 7 not to receive aqueous vapor erosion, guarantees the life of mouth organ.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (2)
1. The utility model provides a digital harmonica of finger-pressure formula, includes the musical instrument body (1) and circuit board (8), the musical instrument body (1) on have a plurality of bleaches (2), every bleaches (2) all corresponds pressure sensor (3) of blowing and sucking that are equipped with perception blowing and sucking air pressure, pressure sensor (3) and circuit board (8) signal connection, its characterized in that of blowing and sucking: the finger-pressure musical instrument is characterized in that an air cavity (5) is arranged on the surface of one side, corresponding to the musical instrument body (1), of the musical instrument body (1), an air hole (6) for communicating the air cavity (5) with the outside air is formed in the position, corresponding to the air cavity (5), of the surface of the musical instrument body (1), the air cavity (5) is sealed and fixed with a finger-pressure sensor (7) corresponding to the opening surface of the musical instrument body (1), the signal detection direction of the finger-pressure sensor (7) points to the inside of the air cavity (5) and senses an air pressure change signal in the air cavity (5), and the finger-pressure sensor (7) is in signal connection with a circuit board (8).
2. The digital finger-pressure harmonica of claim 1, wherein: the position, corresponding to the air cavity (5), on the surface of the musical instrument body (1) is hermetically covered with a hydrophobic breathable film (4), and the finger pressure sensor (7) is in compression joint with the outer side face of the hydrophobic breathable film (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120539681 | 2021-03-16 | ||
| CN2021205396814 | 2021-03-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216957425U true CN216957425U (en) | 2022-07-12 |
Family
ID=82314405
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220052666.1U Active CN217086123U (en) | 2021-03-16 | 2022-01-11 | Hydrophobic ventilative type digit mouth organ |
| CN202220064254.XU Active CN216957424U (en) | 2021-03-16 | 2022-01-11 | Digital harmonica |
| CN202220071009.1U Active CN216957425U (en) | 2021-03-16 | 2022-01-11 | Finger-pressing type digital harmonica |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220052666.1U Active CN217086123U (en) | 2021-03-16 | 2022-01-11 | Hydrophobic ventilative type digit mouth organ |
| CN202220064254.XU Active CN216957424U (en) | 2021-03-16 | 2022-01-11 | Digital harmonica |
Country Status (1)
| Country | Link |
|---|---|
| CN (3) | CN217086123U (en) |
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2022
- 2022-01-11 CN CN202220052666.1U patent/CN217086123U/en active Active
- 2022-01-11 CN CN202220064254.XU patent/CN216957424U/en active Active
- 2022-01-11 CN CN202220071009.1U patent/CN216957425U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN217086123U (en) | 2022-07-29 |
| CN216957424U (en) | 2022-07-12 |
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