CN2169966Y - Tone regulator for hearing aid - Google Patents
Tone regulator for hearing aid Download PDFInfo
- Publication number
- CN2169966Y CN2169966Y CN 93217015 CN93217015U CN2169966Y CN 2169966 Y CN2169966 Y CN 2169966Y CN 93217015 CN93217015 CN 93217015 CN 93217015 U CN93217015 U CN 93217015U CN 2169966 Y CN2169966 Y CN 2169966Y
- Authority
- CN
- China
- Prior art keywords
- utility
- model
- amplifier
- tone
- resistance
- 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
Links
Images
Landscapes
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
Abstract
The utility model relates to a tone regulator for hearing aids, belonging to the technical field of electricity and sound. The utility model can be used for hearing aids, radio recorders, audio amplifiers, etc. The utility model is characterized in that the utility model is composed of an operational amplifier for integrated circuits IC, resistance R1, R2, R3, potentiometer R4, and capacitance C1, C2, C3. The utility model has another two simplified types, one type is a tone regulator which only needs to enhance high-frequency gain, and the other type is a tone regulator which only needs to enhance low-frequency gain. The utility model has the advantages of simple structure, wide regulation range, convenient regulation, etc.
Description
The utility model is to belong to the electroacoustic techniques field, and particularly a kind of tone controller of hearing aids is applicable in the medicine equipment hearing aids and broadcast receiver, sound amplifier etc.
Current hearing aids at production and selling has many types, and wherein many hearing aidss have tone controller.It normally adds a capacitance-resistance filter by an audio frequency amplifier and forms.Filter makes the low frequency part decay of sound wave, and the gain of the HFS of sound wave is just bigger comparatively speaking, and the attenuation of regulating low frequency part just can realize the tone adjusting.
The purpose of this utility model provides a kind of tone controller of hearing aids.The purpose of this utility model is to realize like this, in Figure of description, Fig. 1 has provided the structural representation of this tone controller, it is to select μ PC1158HA2 by integrated circuit operational amplifier IC(for its feature), resistance R 1, R2, R3 and potentiometer R4 and capacitor C 1, C2, C3 form, above electronic devices and components are welded on the printed circuit board (PCB), in the shell of packing at last, are this tone controller.Its course of work is to become audio electrical signal by the sound wave that microphone receives, S1 enters tone controller through input, operational amplifier IC amplifies this audio signal, if use resistance R1 merely, R2 forms ultramagnifier, then Amplifier Gain is R2/R1, it doesn't matter with frequency for it, increase capacitor C 2, C3, behind resistance R 3 and the potentiometer R4, C3 is depended in gain, the series connection of the first half of R3 and R4, in parallel with the R2 again and R4 the latter half later total feedback factor in parallel with R1 of connecting with C2 again is because capacitive reactance is relevant with frequency, so change the numerical value of potentiometer R4, just can change the feedback factor of amplifier to different frequency, just change the relation of Amplifier Gain and frequency, this has just realized the purpose that tone is regulated.Outputing to the next stage amplifier through the audio electrical signal after the amplification of this tone controller by SO carries out using the earphone sounding after the power amplification.
The utility model also has two kinds to simplify type, and accompanying drawing 2 has provided the reduced form tone controller that only needs to promote high-frequency gain, and it is made up of operational amplifier IC and resistance R 1, R2 and capacitor C 1, C2.Its operation principle is the ratio after Amplifier Gain depends on R2 and R1 and capacitive reactance XC2 are in parallel, frequency is high more, XC2 is more little in capacitive reactance, this ratio is just big, gain is just high, just realized high boost, accompanying drawing 3 has provided the reduced form that only needs to promote low-frequency gain, it is made up of operational amplifier IC and resistance R 1, R2 and capacitor C 1 and C3, and Amplifier Gain depends on after capacitive reactance XC3 and the R2 parallel connection and the ratio of R1 that frequency is low more, capacitive reactance XC3 is big more, this ratio is also just big, and gain is just high, has just realized promoting the purpose of low-frequency gain.
The utility model has the advantages that: realize the tone adjusting with the high frequency of boost amplifier or the method for low-frequency gain, reduced by a filter than original method, therefore also just avoided the decay of filter to gain amplifier, circuit of the present utility model is simple, efficient is high, adjustable range is big, easy to adjust.
Claims (5)
1, the utility model is a kind of tone controller of hearing aids, it belongs to the electroacoustic techniques field, be applicable to hearing aids in the medicine equipment and radio-cassette player, sound amplifier, it is made up of its feature integrated circuit operational amplifier IC, resistance R 1, R2, R3 and potentiometer R4 and capacitor C 1, C2, C3.
2, adjuster according to claim 1 is characterized in that integrated circuit operational amplifier IC selects μ PC1158HA2 for use.
3, adjuster according to claim 1 is characterized in that having additional C2, C3 and R3 and R4 in the feedback circuit that general amplifier is made up of R1, R2 and C1.
4, adjuster according to claim 1 is characterized in that when only needing the high-frequency gain of boost amplifier, this tone controller is selected μ PC1158HA2 for use by operational amplifier IC(), resistance R 1, R2 and capacitor C 1 and C2 form.
5, adjuster according to claim 1 is characterized in that when only requiring the low-frequency gain of boost amplifier, this tone controller is selected μ PC1158HA2 for use by operational amplifier IC(), resistance R 1, R2 and capacitor C 1 and C3 form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93217015 CN2169966Y (en) | 1993-06-30 | 1993-06-30 | Tone regulator for hearing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93217015 CN2169966Y (en) | 1993-06-30 | 1993-06-30 | Tone regulator for hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2169966Y true CN2169966Y (en) | 1994-06-22 |
Family
ID=33797040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93217015 Expired - Fee Related CN2169966Y (en) | 1993-06-30 | 1993-06-30 | Tone regulator for hearing aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2169966Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009481B (en) * | 2006-01-25 | 2011-10-26 | 迈米电子株式会社 | Sound control circuit for hearing aid |
| CN105530568A (en) * | 2016-01-26 | 2016-04-27 | 东莞市逸顺音响科技有限公司 | A treble boosting conversion head and treble boosting method |
-
1993
- 1993-06-30 CN CN 93217015 patent/CN2169966Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009481B (en) * | 2006-01-25 | 2011-10-26 | 迈米电子株式会社 | Sound control circuit for hearing aid |
| CN105530568A (en) * | 2016-01-26 | 2016-04-27 | 东莞市逸顺音响科技有限公司 | A treble boosting conversion head and treble boosting method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2301964B (en) | Method and apparatus for amplifying a signal | |
| US4393353A (en) | Negative feedback amplifying circuit having voltage negative feedback and current negative feedback circuits | |
| CA1226229A (en) | Loudspeaker system utilizing an equalizer circuit | |
| WO1998039863A3 (en) | Audio crossover circuit | |
| CN106208973B (en) | Servo-actuated in advance biasing means and the amplifier of a kind of A genus audio power amplifiers | |
| CN2169966Y (en) | Tone regulator for hearing aid | |
| CN210629837U (en) | Audio control circuit and equipment | |
| US20060147060A1 (en) | Multifunction preamplifier microphone | |
| CN116047943B (en) | Battery-powered portable loudspeaker energy-saving control method and system | |
| US7046814B2 (en) | Impedance adapter preamplifier device for electronic tube audio frequencies able to be inserted on line on the path of the low frequency signal | |
| CN201216013Y (en) | Mute circuit for earphone | |
| CN1110891C (en) | Digital power amplifier | |
| Afolayan | Design and construction of audio power amplifier | |
| CN2167485Y (en) | Infrared monolithic wireless ear phone | |
| EP0813296A3 (en) | Amplifier arrangements with high damping factor | |
| CN2514559Y (en) | Magnetic field coupling wideband regulator | |
| CN211019150U (en) | Microphone capable of adjusting tone | |
| CN218788834U (en) | Loudspeaker sounding phase frequency compensation device and intelligent large screen | |
| CN221509545U (en) | Power amplifier circuit and power amplifier chip | |
| CN215453253U (en) | Dedicated circuit distribution control panel of audio amplifier | |
| CN201066835Y (en) | Digital multimedia sound amplification circuit | |
| CN2355506Y (en) | Bass amplifier | |
| CN219802286U (en) | Analog sound amplifying circuit and amplifier thereof | |
| CN215420720U (en) | Tone control circuit | |
| CN2281042Y (en) | High-fidelity electron earphone power amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Designer after: Liang Changrui Designer after: Liu Xiumin Designer after: Zhang Xunwen Designer before: Liang Changrui |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: DESIGNER; FROM: LIANG CHANGRUI TO: LIANG CHANGRUI; LIU XIUMIN; ZHANG XUNWEN |
|
| 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 |