CN2307289Y - Sound corrector for pocket computer - Google Patents
Sound corrector for pocket computer Download PDFInfo
- Publication number
- CN2307289Y CN2307289Y CN 97222625 CN97222625U CN2307289Y CN 2307289 Y CN2307289 Y CN 2307289Y CN 97222625 CN97222625 CN 97222625 CN 97222625 U CN97222625 U CN 97222625U CN 2307289 Y CN2307289 Y CN 2307289Y
- Authority
- CN
- China
- Prior art keywords
- sound
- circuit
- utility
- model
- pocket computer
- 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)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model discloses a sound corrector for a pocket computer, which belongs to a microelectronic device. The utility model is composed of a detecting part, a calculation controlling part and a state displaying part, wherein, the detecting part comprises a sound sensor, an amplifying circuit, a detecting circuit, a filtering circuit and a shaping circuit; the calculation controlling part comprises a single chip microcomputer, a sound name selecting circuit and a relevant peripheral circuit; the state displaying part comprises a liquid crystal display, a sound reminding device, etc. Due to the adoption of a new integrated circuit design, the utility model has the advantages of simple structure, stable and reliable working performance, accurate sound correction and wide sound correcting range. The utility model can be used for correcting the sound of various music instruments.
Description
The utility model belongs to the microelectronics apparatus, is specifically related to a kind of pocket computer CALIBRATION that is used for the musical instrument tuner.
Beautiful interesting to listen to music can be moulded people's sentiment, give beautiful enjoyment, yet discordant musical sound the people can't be accepted, even bring injury to people as dry sound.Accuracy in pitch is the soul of act of music, and for musical instrument, accuracy in pitch is just more important.As it is inaccurate to play out sound, then intolerable to the ear, can't play, so the tuner of musical instrument is vital.Yet, for hundreds of years, use the reed-type tuning pipe to various musical instrument tuners always.To well-trained professional instrument playing personnel, can reach the requirement of tuner basically, but will accomplish in this way that concerning the beginner tuner accurately is quite difficult.In view of this, need seek a kind of new tuner method and apparatus, the design people utilizes microelectronics and Microcomputer Technology to solve this difficult problem.
It is a kind of simple in structure, easy to use that the purpose of this utility model is to provide, and stable and reliable working performance, tuner be the pocket computer CALIBRATION accurately.
The utility model is achieved in that it is grouped into by test section, s operation control part and state display part.The test section comprises sonic transducer, amplification, detection, filtering and shaping circuit; Arithmetic section comprises single chip microcomputer, musical alphabet selection and relevant peripheral circuit; The state indicating section comprises LED demonstration and auditory tone cues device etc.
Sonic transducer MIC is through C
1With IC
21 pin link to each other, by IC
2The 1-3 polyphone of not gate constitutes the output terminal of prime amplifier through C
2With D
1And D
2Link to each other IC
2Not gate 4-6 polyphone back and IC
1P
3.4Mouth links to each other, IC
1P
3.1Mouth links to each other oscillator CT and IC with the hummer SP of auditory tone cues device
14,5 pin link to each other, input circuit AN and R selected in musical alphabet
5With IC
1P
3.0Mouth links to each other.
Because the utility model has adopted new integrated circuit (IC) design, and is not only simple in structure, stable and reliable working performance, the accurate and tuner wide ranges of tuner, the accuracy in pitch of applicable various musical instruments is proofreaied and correct.
Below in conjunction with accompanying drawing and embodiment the utility model is further described.
Fig. 1 is a shape structural representation outside the utility model pocket computer CALIBRATION;
Fig. 2 is the circuit theory diagrams of the utility model;
As shown in the figure, the utility model it be grouped into by test section, s operation control part and state display part.The test section comprises sonic transducer, amplification, detection, filtering and shaping circuit; Arithmetic section comprises single chip microcomputer, musical alphabet selection and relevant peripheral circuit; The state indicating section comprises LED demonstration and auditory tone cues device etc.Sonic transducer MIC is through C
1With IC
21 pin link to each other, by IC
2The 1-3 polyphone of not gate constitutes the output terminal of prime amplifier through C
2With D
1And D
2Link to each other IC
2Not gate 4-6 polyphone back and IC
1P
3.4Mouth links to each other, IC
1P
3.1Mouth links to each other oscillator CT and IC with the hummer SP of auditory tone cues device
14,5 pin link to each other selector switch AN and R
5With IC
1P
3.0Mouth links to each other, and constitutes musical alphabet and selects input circuit.
As embodiment, single-chip microcomputer IC of the present utility model
1Be AT89C2051, IC
2Be CD4069, IC
1P
1.0-P
1.5Connect LED respectively as delivery outlet
1-LED
6, corresponding indication F, C, G, D, 6 musical alphabets such as A, E, P
1.6And P
1.7Connect LED respectively
7And LED
8, difference diaphone low (low) and pitch (high) indicator, the oscillation frequency of oscillator CT is 6MHz, passes through IC
14,5 pin enter counters, select defeated switch AN and R
5With IC
1P
3.0Mouth links to each other, and constitutes musical alphabet and selects input circuit, the selection that is used to calibrate musical alphabet.
Principle of work of the present utility model is as follows: musical instrument sound signal detects through MIC, by C
1IC is sent in coupling
2Not gate 1-3 amplifies, through D
1And D
2Detection, C
3, R
3After the filtering, send into IC
2The shaping circuit that not gate 4-6 constitutes behind the formation standard square wave, is sent into IC
1P
3.4Mouthful, IC
1Storer has the standard frequency data in advance, and relevant operation processing program.When IC is sent in the pulse of musical instrument sound
1Behind the counter, calculate musical frequency, and compare with standard frequency.If musical frequency is lower than standard frequency, LED then
7(low) glittering, if be higher than standard frequency, LED then
8(high) glittering, when equaling standard frequency or frequency error in ± 5 hertz the time, then be considered as accuracy in pitch, then auditory tone cues device SP will send " drips! Drip! " prompt tone.After the start, Automatic Program is selected F sound correcting state.Select sounds such as C, G, D, A, E successively by the AN key, the musical alphabet that selection capable of circulation is different.Behind sound of calibration, program can change over to automatically proofreaies and correct next sound.
The utility model is not limited only to the element of above-mentioned model, and all alternative use of identical function device can reach the purpose of this utility model equally.
The utility model adopts the new type integrated circuit structural design, simple in structure, volume small and exquisite (only being equivalent to a matchbox size), good looking appearance, easy to use, working stability is reliable, and with low cost, power consumption is few, uses two button lithium batteries, if every day tuner once, can use continuously more than 3 years.
The utility model can be used for the accuracy in pitch of various different musical instruments to be proofreaied and correct, as piano, and accordion etc.
Use the utility model pocket computer CALIBRATION, just the people of logical music theory can reach desirable tuner effect, more traditional tuning pipe CALIBRATION, use more convenient, tuner accuracy height.
Claims (2)
1. a pocket computer CALIBRATION is grouped into by test section, s operation control part and state display part, and the test section comprises sonic transducer, amplification, detection, filtering and shaping circuit; Arithmetic section comprises single chip microcomputer, musical alphabet selection and relevant peripheral circuit; The state indicating section comprises LED demonstration and auditory tone cues device etc., and it is characterized in that: sonic transducer MIC is through C
1With IC
21 pin link to each other, by IC
2The 1-3 polyphone of not gate constitutes the output terminal of prime amplifier through C
2With D
1And D
2Link to each other IC
2Not gate 4-6 polyphone back and IC
1P
3.4Mouth links to each other, IC
1P
3.1Mouth links to each other oscillator CT and IC with the hummer SP of auditory tone cues device
14,5 pin link to each other, input circuit AN and R selected in musical alphabet
5With IC
1P
3.0Mouth links to each other.
2. pocket computer CALIBRATION as claimed in claim 1 is characterized in that: used single chip microcomputer IC
1Be DT89C2051; Preamplifier IC
2Be CD4069.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222625 CN2307289Y (en) | 1997-09-01 | 1997-09-01 | Sound corrector for pocket computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97222625 CN2307289Y (en) | 1997-09-01 | 1997-09-01 | Sound corrector for pocket computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2307289Y true CN2307289Y (en) | 1999-02-10 |
Family
ID=33937642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97222625 Expired - Fee Related CN2307289Y (en) | 1997-09-01 | 1997-09-01 | Sound corrector for pocket computer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2307289Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465592C (en) * | 2004-01-22 | 2009-03-04 | 理音株式会社 | Automatic calibration method of sound level meter and its system |
| CN1805003B (en) * | 2006-01-12 | 2011-05-11 | 深圳市蔚科电子科技开发有限公司 | Pitch training method |
| CN106911984A (en) * | 2017-01-19 | 2017-06-30 | 同济大学 | Phonoreception circuit based on amplifier |
-
1997
- 1997-09-01 CN CN 97222625 patent/CN2307289Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100465592C (en) * | 2004-01-22 | 2009-03-04 | 理音株式会社 | Automatic calibration method of sound level meter and its system |
| CN1805003B (en) * | 2006-01-12 | 2011-05-11 | 深圳市蔚科电子科技开发有限公司 | Pitch training method |
| CN106911984A (en) * | 2017-01-19 | 2017-06-30 | 同济大学 | Phonoreception circuit based on amplifier |
| CN106911984B (en) * | 2017-01-19 | 2020-08-14 | 同济大学 | Sound sensing circuit based on operational amplifier |
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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 |