CN202632745U - Violin sound check device - Google Patents
Violin sound check device Download PDFInfo
- Publication number
- CN202632745U CN202632745U CN 201220252692 CN201220252692U CN202632745U CN 202632745 U CN202632745 U CN 202632745U CN 201220252692 CN201220252692 CN 201220252692 CN 201220252692 U CN201220252692 U CN 201220252692U CN 202632745 U CN202632745 U CN 202632745U
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- module
- violin
- microphone
- mcu
- input
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Abstract
The utility model provides a violin sound check device, belongs to the technical field of an apparatus and instrument system, and especially relates to the technical field of acoustic wave measurement. The violin sound check device comprises a microprogrammed control unit (MCU) module, a reshaping module, an input and display module and a microphone, the first control end of the MCU module is connected with the input and display module, and the second control end of the MCU module is connected with the reshaping module which is connected with the microphone. The microphone is in charge of collecting an acoustic wave and transforming the acoustic wave into an electrical signal, the reshaping module reshapes the electrical signal of the microphone connected with the reshaping module to form a square wave which is sent to the MCU module, the MCU module measures frequency of the square wave and sends the frequency to the input and display module to be displayed. Therefore, when a violin is played, generated sound can be obtained, and strings of the violin can be adjusted according to the measured frequency. The violin sound check device is practical and low in cost.
Description
Technical field
The utility model relates to acoustic measurement, relates in particular to a kind of violin CALIBRATION, belongs to the technical field of instrument and meter system.
Background technology
Along with the progress of society, the raising of people's living standard, the demand of cultivation child's musicianship is increasingly high.The accuracy in pitch that the ordinary people regulates musical instruments has just become a difficult problem, is necessary to design corresponding CALIBRATION and addresses this problem.
Summary of the invention
The purpose of the utility model provide a kind of intelligence, easily, violin CALIBRATION cheaply.
The utility model adopts following technical scheme for realizing above-mentioned purpose:
A kind of violin CALIBRATION is characterized in that: it comprises MCU module, Shaping Module, input and display module and microphone; First control end of said MCU module connects input and display module; Second control end connects Shaping Module, and Shaping Module links to each other with microphone.
Said MCU module adopts the single-chip microcomputer M37471 of Mitsubishi.
Said Shaping Module is adopted as shaping amplification circuit.
Said input and display module comprise keyboard and LCDs.
The utility model is compared prior art and is had following advantage:
The violin CALIBRATION of the utility model adopts the digital measurement sound frequency, accurately and reliably.
What this violin CALIBRATION used is Mitsubishi's single-chip microcomputer, and the module that it has the high speed acquisition square width makes the not high CPU of frequency of operation can gather the high speed acquisition square width.
This violin CALIBRATION volume is little, easy to carry; Power is little, and is energy-conservation, and battery just can be worked.
This violin CALIBRATION can be set 100 frequency promptings, need not to remember the accuracy in pitch frequency of violin during test.
Description of drawings
Fig. 1 is the one-piece construction figure of violin CALIBRATION.
Embodiment
To combine accompanying drawing and specific embodiment that violin CALIBRATION of the present invention is done to describe in detail further below.
MCU module:, be responsible for other module of control by energy-conservation Mitsubishi chip microcontroller; First control end of MCU module and input and display module; Second control end links to each other with Shaping Module; Shaping Module links to each other with microphone.
Microphone is responsible for gathering the sound wave of violin, and is converted into electric signal.
Shaping Module carries out shaping with the electric signal of microphone, forms square wave, is sent to the MCU module, and the MCU module records the frequency of square wave, is sent to input and display module and shows.Thereby,, measure its frequency adjustment, thereby the degree of tightness of the string of adjustment violin through its sound that sends when playing the violin.
The use of the utility model is following:
Play the violin, sound; Microphone is responsible for gathering sound wave, and is converted into electric signal; Be sent to Shaping Module, Shaping Module mainly is made up of the LM399 amplifier, and it carries out shaping with electric signal, forms square wave;
Square wave is sent to the MCU module, and the MCU module records the frequency of square wave;
Being sent to input and display module shows.Input is a button, and demonstration is little LCDs.
Adjust the degree of tightness of the string of violin according to the measured frequency that shows.
Claims (4)
1. violin CALIBRATION, it is characterized in that: it comprises MCU module, Shaping Module, input and display module and microphone; First control end of said MCU module connects input and display module; Second control end connects Shaping Module, and Shaping Module links to each other with microphone.
2. violin CALIBRATION according to claim 1 is characterized in that: said MCU module adopts Mitsubishi's single-chip microcomputer.
3. violin CALIBRATION according to claim 1 is characterized in that: said Shaping Module is adopted as shaping amplification circuit.
4. violin CALIBRATION according to claim 1 is characterized in that: said input and display module comprise keyboard and LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252692 CN202632745U (en) | 2012-05-31 | 2012-05-31 | Violin sound check device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220252692 CN202632745U (en) | 2012-05-31 | 2012-05-31 | Violin sound check device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202632745U true CN202632745U (en) | 2012-12-26 |
Family
ID=47385909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220252692 Expired - Fee Related CN202632745U (en) | 2012-05-31 | 2012-05-31 | Violin sound check device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202632745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017166266A1 (en) * | 2016-04-01 | 2017-10-05 | 吴凤彪 | Electronic tuner |
-
2012
- 2012-05-31 CN CN 201220252692 patent/CN202632745U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017166266A1 (en) * | 2016-04-01 | 2017-10-05 | 吴凤彪 | Electronic tuner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121226 Termination date: 20140531 |