CN2170561Y - Computerized tone corrector - Google Patents
Computerized tone corrector Download PDFInfo
- Publication number
- CN2170561Y CN2170561Y CN 93244072 CN93244072U CN2170561Y CN 2170561 Y CN2170561 Y CN 2170561Y CN 93244072 CN93244072 CN 93244072 CN 93244072 U CN93244072 U CN 93244072U CN 2170561 Y CN2170561 Y CN 2170561Y
- Authority
- CN
- China
- Prior art keywords
- microprocessor
- musical
- keyboard
- tone
- transducer
- 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.)
- Expired - Fee Related
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- Auxiliary Devices For Music (AREA)
Abstract
The utility model relates to a computerized tone corrector which is composed of an acoustic frequency pick-up and amplifying circuit, an A/D conversion, a microprocessor, a program and data memory, a decoder, a displayer and a keyboard. The musical tone signal is picked up and amplified, and then is changed into the digital signal which is delivered into the microprocessor for conducting the fourier transform. The musical tone frequency spectrum is compared with the standard sound source frequency spectrum which is prestored in the memory in a frequency area, and the comparative result is displayed by a display. The correction and the tone fixing to different musical instruments and musical tones can be selected through a keypad.
Description
The utility model relates to a kind of device that is used for various musical instrument accordatura and tuner, particularly adopts the accordatura of electronic technology and the device of tuner.
The device that is used for musical instrument accordatura and tuner in the prior art includes tuning pipe and electronic musical note generator, adopt above-mentioned tuner device that musical instrument is carried out accordatura and tuner, its main method is the hearing that relies on people's ear, the pronunciation of high-ranking officers' mixer and the musical sound of musical instrument compare, and then the musical sound of musical instrument are transferred to the degree identical with the pronunciation of tuner device.Its major defect is to need tuner person that higher technical ability is arranged, and does not generally have trained people can't finish tuner work, and the expert who possesses this technical ability seldom, and the tuner time is long, and a general piano needs 2-4 hour, and expense is also higher, and the tuner precision is relatively poor.
The purpose of this utility model is a kind of musical sound and standard source of sound can being compared of design, and provide the computer tone corrector of comparative result, carry out the work of tuner to replace present dependence people ear hearing, the work that this complexity and technical ability are had relatively high expectations becomes simple, also can be finished by the ordinary people.
The utility model computer tone corrector is by the audio frequency pick-up circuit, note amplifier, the A/D transducer, microprocessor, memory under program, data memory, code translator, display and keyboard are formed, wherein audio sensor is connected with note amplifier in order to finish picking up of musical sound, conversion and audio frequency amplify, note amplifier is connected in order to finish analog to digital conversion with the A/D transducer, the A/D transducer is connected with little processing, microprocessor again respectively with memory under program, data memory be connected with code translator in order to finish the musical sound digital signal with give the standard source of sound digital signal that is stored in earlier in the data memory relatively and provide comparative result, code translator is connected with display in order to above-mentioned comparative result is shown and the realization Keyboard Control with keyboard respectively again.
The utility model computer tone corrector has simple in structure, with low cost, and tuner is accurate, the precision height, and characteristics easy to use, only need carry out shirtsleeve operation promptly can advance tuner in use, and speed is fast, effective.The utility model computer tone corrector is specially adapted to family, arenas, the research of art-performing groups, musical instrument manufacturing plant, musical instrument shop and other relevant musical sound and detection department, is a kind of desirable tuner, accordatura instrument.
Shown in Figure 1 is the theory diagram of the utility model computer tone corrector.
Shown in Figure 2 is the electrical schematic diagram of an example of the utility model.
Figure 3 shows that flow chart of the present utility model.
Embodiment:
As shown in Figure 2, MIC, R
2, R
3, R
4, C
4, F
1, Z
1, form audio frequency and pick up and amplifying circuit R
5, R
6, Z
2Form the stabilized voltage supply of a mu balanced circuit, K as 8098 chips
1, C
5, R
7, D
1Constitute original state, C that reset circuit is used to set up instrument
1, C
2, J
1Be the clock source of a crystal oscillating circuit as 8098 little process chip, U
18098 chips are the microprocessor that contains the A/D conversion, U
2The 74LS138 chip is an address decoder, U
3The 74LS373 chip is a latch, U
42784 chips are memory under program, U
56264 chips are data memory, U
68279 chips are the keyboard decoding device, U
774LS138 is a code translator, LED
1And LED
2Be that number shows that REY, BOARD are keyboard, when this instrument receives musical sound analog voltage signal from MIC or the output of other audio frequency pick-up circuit, through by F
1The note amplifier of forming amplifies, A/D transducer through 8098 chip internals carries out analog to digital conversion then, become the manageable musical sound digital signal of microprocessor U(t) this digital signal is carried out quick Fourier transformation computation in 8090 chips, thereby obtain the musical sound digital signal U(f of a frequency domain), with U(f) frequency spectrum compare with the digital signal frequency spectrum that is stored in the standard source of sound in the data-carrier store in advance, and with comparative result by being lower than the standard source of sound, be higher than the standard source of sound and show, utilize the keyboard can tuner and the accordatura of input instruction to adapt to different musical instruments with identical with the standard source of sound.
Claims (1)
1, a kind of computer tone corrector, by audio frequency pick-up circuit [1], audio amplifier circuit [2], A/D transducer [3], microprocessor [4], program storage [5], data-carrier store [6], code translator [7], display [8] and keyboard [9] are formed, it is characterized in that audio frequency pick-up circuit [1] is connected with note amplifier [2] finishes picking up and amplify of musical sound, and note amplifier [2] is connected with A/D transducer [3] finishes analog to digital conversion, and A/D transducer [3] is connected with microprocessor [4], microprocessor [4] again respectively with program storage [5], data-carrier store [6] is connected with code translator [7], in order to the computing of finishing Fourier transform and frequency domain digital signal relatively and provide comparative result, code translator [7] is connected with keyboard [9] in order to show above-mentioned comparative result and to realize Keyboard Control with display [8] respectively again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244072 CN2170561Y (en) | 1993-11-09 | 1993-11-09 | Computerized tone corrector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93244072 CN2170561Y (en) | 1993-11-09 | 1993-11-09 | Computerized tone corrector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2170561Y true CN2170561Y (en) | 1994-06-29 |
Family
ID=33817365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93244072 Expired - Fee Related CN2170561Y (en) | 1993-11-09 | 1993-11-09 | Computerized tone corrector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2170561Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7646293B2 (en) | 2005-11-02 | 2010-01-12 | Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd. | System and method for testing a buzzer associated with a computer |
| CN102938223A (en) * | 2012-11-12 | 2013-02-20 | 杨亚军 | Method, apparatus and device for music playing and tuning |
| CN103077698A (en) * | 2013-01-10 | 2013-05-01 | 天津理工大学 | High-accuracy detection method for tone color of musical instrument |
| CN103544945A (en) * | 2013-09-17 | 2014-01-29 | 汤子毅 | Portable piezo-ceramic instrument tone recognition system |
| CN104392710A (en) * | 2014-12-17 | 2015-03-04 | 常熟市先锋乐器有限公司 | Electronic music entertainment system |
| CN104464703A (en) * | 2014-12-18 | 2015-03-25 | 常熟市先锋乐器有限公司 | Musical instrument precision detecting method |
| CN104485091A (en) * | 2014-12-17 | 2015-04-01 | 常熟市先锋乐器有限公司 | Intelligent learning method of electronic musical instruments |
| CN104505071A (en) * | 2014-12-17 | 2015-04-08 | 常熟市先锋乐器有限公司 | Signal processing method of electronic musical instrument |
-
1993
- 1993-11-09 CN CN 93244072 patent/CN2170561Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7646293B2 (en) | 2005-11-02 | 2010-01-12 | Hong Fu Jin Precision Industry (Shen Zhen) Co., Ltd. | System and method for testing a buzzer associated with a computer |
| CN102938223A (en) * | 2012-11-12 | 2013-02-20 | 杨亚军 | Method, apparatus and device for music playing and tuning |
| CN103077698A (en) * | 2013-01-10 | 2013-05-01 | 天津理工大学 | High-accuracy detection method for tone color of musical instrument |
| CN103077698B (en) * | 2013-01-10 | 2015-07-29 | 天津理工大学 | A kind of High-accuracy detection method for tone color of musical instrument |
| CN103544945A (en) * | 2013-09-17 | 2014-01-29 | 汤子毅 | Portable piezo-ceramic instrument tone recognition system |
| CN103544945B (en) * | 2013-09-17 | 2016-04-06 | 汤子毅 | Portable piezo-ceramic instrument tone recognition system |
| CN104392710A (en) * | 2014-12-17 | 2015-03-04 | 常熟市先锋乐器有限公司 | Electronic music entertainment system |
| CN104485091A (en) * | 2014-12-17 | 2015-04-01 | 常熟市先锋乐器有限公司 | Intelligent learning method of electronic musical instruments |
| CN104505071A (en) * | 2014-12-17 | 2015-04-08 | 常熟市先锋乐器有限公司 | Signal processing method of electronic musical instrument |
| CN104464703A (en) * | 2014-12-18 | 2015-03-25 | 常熟市先锋乐器有限公司 | Musical instrument precision detecting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |