CN202103849U - Hearing aid - Google Patents
Hearing aid Download PDFInfo
- Publication number
- CN202103849U CN202103849U CN2011202341816U CN201120234181U CN202103849U CN 202103849 U CN202103849 U CN 202103849U CN 2011202341816 U CN2011202341816 U CN 2011202341816U CN 201120234181 U CN201120234181 U CN 201120234181U CN 202103849 U CN202103849 U CN 202103849U
- Authority
- CN
- China
- Prior art keywords
- output
- preamplifier
- module
- hearing aid
- microphone
- 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
Abstract
The utility model relates to a hearing aid, belonging to micro voice amplifying equipment. The hearing aid comprises a microphone, a power amplifying module, a volume regulating device, a receiver and a battery. The output of the power amplification module is connected with the microphone; the battery is connected with each part of the system; the hearing aid further comprises a preamplifier and a filtering module; the output of the receiver is connected with the filtering module; the output of the filtering module is connected with the preamplifier; the output of the preamplifier is connected with the volume regulating device; and the output of the volume regulating device is connected with the power amplification module. As the filtering module is additionally added to the hearing aid, an interference noise signal in an audio signal input can be better filtered, a signal loss problem is solved after the filtering module is additionally provided by arranging the preamplifier; simultaneously, the volume regulating device is arranged at the rear side of the preamplifier; therefore, an excellent audio signal can be provided for the power amplification module, and the whole power consumption of the hearing aid is further reduced.
Description
Technical field
The utility model relates to a kind of hearing aids, belongs to miniature public address equipment class.
Background technology
All help hearing disabilities person to improve dysacousis, and then instrument, unit and the instrument of raising and his conference communicative competence can be referred to as hearing aids, Osophone in other words.Hearing aids electric power arranged with two types of non-electricity, the latter goes out of use at present.The former has two kinds of electron tube and transistor types again.The transistor type hearing aids is the dexterousst light, has replaced electron tube and generally employing of quilt after coming out in nineteen fifty.Hearing aids a multitude of names, but all hearing aidss comprise these three major parts of receiver (microphone), power amplifier module and microphone (earphone).Microphone is an acoustic-electrical transducer; Change extraneous acoustical signal into audio signal, the output of said receiver is connected to power amplifier module, and the output of said power amplifier module is connected to microphone; Said power amplifier module is amplified to audio signal is enough to promote the receiver sounding; Simultaneously, between power amplifier module and microphone, also be provided with a volume adjustment device, in order to regulate the volume of microphone.Aforesaid this hearing aids under power amplifier module and receiver and situation that microphone separates, generally all has effect preferably; But along with development of technology, the development of related chip, present trend is with all devices; Comprise that receiver, power amplifier module and microphone all are encapsulated in the minimum space, and whole mode with suspension hangs on the ear, because integrated level increases; Reducing of volume brought a series of problem, after main problem is the integrated encapsulation of all parts of hearing aids; Very serious of phase mutual interference, this interference has caused and has uttered long and high-pitched sounds, serious distortion etc., and prior art has further improved necessity for this reason.
The utility model content
The goal of the invention of the utility model is to provide a kind of hearing aids, to solve the problem that prior art exists.
For solving the problems of the technologies described above, the utility model provides following technical proposals.
A kind of hearing aids; Comprise microphone, power amplifier module, volume adjustment device, receiver and battery, the output of said power amplifier module is connected to microphone, and said battery is connected to each parts of system; Also comprise a preamplifier and a filtration module; The output that the output of said receiver is connected to filtration module, said filtration module is connected to preamplifier, and the output of said preamplifier is connected to volume adjustment device, and the output of said volume adjustment device is connected to power amplifier module.
This hearing aids of the utility model; Owing to increased by a filtration module, can the interference noise signal of audio signal input end be filtered preferably, and solve and increased the loss of signal problem behind the filtration module through preamplifier is set; Simultaneously volume adjustment device is arranged on preamplifier position rear side; Can also reduce the overall power of hearing aids simultaneously for power amplifier module provides good audio signal so on the one hand, obviously the goal of the invention of the utility model is achieved.
As further improvement, said power amplifier module is the MAX9725 integrated circuit.It is the output of reference that said MAX9725 can produce with ground under single supply; Save jumbo capacitance, can effectively save cost and circuit board space, reduced element heights; The final circuit board space of effectively saving; Power consumption is also lower, is applicable to the described hearing aids of the mancarried device that circuit board space is limited, particularly the utility model.
As further improvement, said battery is a button cell.Button cell can be changed, therefore as preferred.
Description of drawings
Fig. 1 is the system block diagram of the said hearing aids preferred implementation of the utility model.
Embodiment
A kind of hearing aids that below will combine the utility model preferred embodiment to provide is done further to detail to the utility model.
As shown in Figure 1; A kind of hearing aids that the utility model preferred embodiment provides; Comprise microphone 6, power amplifier module 5, volume adjustment device 4, receiver 1 and battery 7, the output of said power amplifier module is connected to microphone, and said battery is connected to each parts of system; Also comprise a preamplifier 3 and a filtration module 2; The output that the output of said receiver is connected to filtration module, said filtration module is connected to preamplifier, and the output of said preamplifier is connected to volume adjustment device, and the output of said volume adjustment device is connected to power amplifier module.
In this preferred embodiment, power amplifier module 5 adopts the MAX9725 integrated circuit to constitute.Simultaneously in this preferred embodiment, said battery is a button cell, uses up replaceable battery behind the electric weight.
The above is merely the embodiment of the utility model.But the utility model protection range is not limited thereto.Any technical staff who is familiar with the present technique field is in the technical scope that the utility model discloses; The variation that can expect easily or replacement; All should be encompassed within the protection range of the utility model, therefore, the protection range of the utility model should be as the criterion with the protection range of claim.
Claims (3)
1. hearing aids; Comprise microphone, power amplifier module, volume adjustment device, receiver and battery, the output of said power amplifier module is connected to microphone, and said battery is connected to each parts of system; It is characterized in that: also comprise a preamplifier and a filtration module; The output that the output of said receiver is connected to filtration module, said filtration module is connected to preamplifier, and the output of said preamplifier is connected to volume adjustment device, and the output of said volume adjustment device is connected to power amplifier module.
2. hearing aids according to claim 1 is characterized in that: said power amplifier module is the MAX9725 integrated circuit.
3. hearing aids according to claim 1 is characterized in that: said battery is a button cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202341816U CN202103849U (en) | 2011-07-05 | 2011-07-05 | Hearing aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202341816U CN202103849U (en) | 2011-07-05 | 2011-07-05 | Hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202103849U true CN202103849U (en) | 2012-01-04 |
Family
ID=45389845
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202341816U Expired - Fee Related CN202103849U (en) | 2011-07-05 | 2011-07-05 | Hearing aid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202103849U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103385234A (en) * | 2013-08-12 | 2013-11-13 | 苏州启智机电技术有限公司 | Electronic mosquito killing system |
| CN111586527A (en) * | 2020-04-28 | 2020-08-25 | 重庆西原楼宇自动化工程有限公司 | Intelligent voice processing system |
-
2011
- 2011-07-05 CN CN2011202341816U patent/CN202103849U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103385234A (en) * | 2013-08-12 | 2013-11-13 | 苏州启智机电技术有限公司 | Electronic mosquito killing system |
| CN103385234B (en) * | 2013-08-12 | 2015-01-14 | 宁海县雁苍山电力建设有限公司 | Electronic mosquito killing system |
| CN111586527A (en) * | 2020-04-28 | 2020-08-25 | 重庆西原楼宇自动化工程有限公司 | Intelligent voice processing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202841468U (en) | Bluetooth earphone with hearing-aid and anti-noise functions | |
| CN104159181B (en) | Hearing-aid method and system with autonomous adjusting function | |
| CN204014060U (en) | There is auditory prosthesis and system and the application of autonomous adjusting function | |
| CN202103849U (en) | Hearing aid | |
| CN201499302U (en) | Multifunctional audiphones | |
| CN203968327U (en) | A kind of exempt from extract carry out low coverage dialogue earphone | |
| CN202679632U (en) | Digital audio box-type hearing-aid | |
| CN207150781U (en) | A kind of active noise reduction earphone of pluggable earphone line | |
| CN202798855U (en) | Microphone circuit module with reverberation and monitoring functions | |
| CN201708849U (en) | Mobile phone with hearing aid function | |
| CN203181214U (en) | Cantilever beam type mounting structure of piezoelectric ceramic bone conduction receiver | |
| CN102469399A (en) | Noise-reduction hearing aid | |
| CN209949427U (en) | Microphone integrated with audio amplifier and hearing aid | |
| CN210958769U (en) | Electronic equipment | |
| CN209949426U (en) | MEMS microphone and full-integrated hearing aid | |
| CN205754753U (en) | A kind of double moving-coil monitoring headpone | |
| CN202135320U (en) | Mobile terminal having hearing aid function | |
| CN201813528U (en) | Solar hearing aid | |
| CN207968840U (en) | A kind of circular audio devices of 3D | |
| CN111431487A (en) | Low-noise microphone preamplifier circuit | |
| CN202059574U (en) | High sensitivity sound detector prepared by operational amplifiers | |
| CN2796480Y (en) | Bag having audio function | |
| CN209517441U (en) | A kind of earphone with volume monitoring | |
| CN209824017U (en) | Hearing aid converter | |
| CN201854398U (en) | Wireless earphone for foreign language listening teaching |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20150705 |
|
| EXPY | Termination of patent right or utility model |