CN2279663Y - Multi-function language training machine for deaf person - Google Patents
Multi-function language training machine for deaf person Download PDFInfo
- Publication number
- CN2279663Y CN2279663Y CN 96241470 CN96241470U CN2279663Y CN 2279663 Y CN2279663 Y CN 2279663Y CN 96241470 CN96241470 CN 96241470 CN 96241470 U CN96241470 U CN 96241470U CN 2279663 Y CN2279663 Y CN 2279663Y
- Authority
- CN
- China
- Prior art keywords
- amplifier
- microphone
- output
- power amplifier
- earphone
- 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
- Circuit For Audible Band Transducer (AREA)
Abstract
The utility model relates to a multi-function language training machine for deaf people, which is mainly composed of a microphone, amplifiers, an earphone, etc. and is characterized in that the post amplifier is single track signal input and double track signal output, the power amplifier is a double track high-fidelity power amplifier, and the earphone is a double track stereophony earphone. The utility model also comprises a following microphone, a following amplifier and a seven-segment equalizer. The utility model has the advantages of low cost, small distortion, low noise, independent and adjustable double track sound volume and frequency sound, etc.
Description
The utility model relates to a kind of special education device to the deaf person.
The existing school for the deaf of China is more than 1,000 at present, the deaf youngster more than 20 ten thousand in the school.It is physilogical characteristics according to deaf and dumb patient that deaf youngster is carried out voice training, utilizes their residual hearing, with through handling later sound, can make the deaf and dumb trouble people of severe and utmost point severe recover linguistic function.Existing language exerciser imperfection still on function and performance mainly shows following several respects:
1, mostly is monophony greatly, even two-channel, the volume of left and right acoustic channels and frequency response can not independently be regulated, and in fact the hearing loss of two of deafness patient ears on different frequency point all is different, therefore need to left and right ear on different frequency with different hearing compensations, just can return to normal hearing program;
2, existing language exerciser has only group's religion function, does not follow and reads function, and is therefore impossible through auditory system---and oneself's feedback of articulatory system, adjustment reach correct pronunciation.
3, the most loud output often is no more than 90dB in the electric parameter of existing voice training machine, this is fit to for deaf youngster of moderate and the deaf youngster of severe, but the deaf youngster of utmost point severe who surpasses 90dB for hearing loss does not have effect, electric parameter medium frequency response often the highest to 3-4KH8, and harmonic distortion often surpasses 5%, such parameter is fully passable as deaf-aid set, but is far from being enough for the training airplane that deaf youngster learns a language.
But the purpose of this utility model is to provide all independent regulation of a kind of two-channel, volume and frequency, and has with multi-functional deaf person's language exerciser of reading function.
The utility model mainly is made up of microphone, amplifier, earphone and adjunct circuit; It is characterized in that: microphone is made up of high-fidelity moving coil microphone 1, the output termination prime amplifier 2 of high-fidelity moving coil microphone 1, the output terminal of prime amplifier 2 is connected with the input end of divider 3, the multi-channel output of described divider 3 is connected with earphone 6 with power amplifier 5 by post amplifier 4 respectively, described post amplifier is the monophonic signal input, binaural signal output, described power amplifier 5 is the two-channel high-fidelity power amplifier, and described earphone 6 is the three-dimensional earphone of two-channel; This device also comprises following for one to be read microphone 7 and follows sense amplifier 8, and described input termination with sense amplifier 8 is followed and read microphone 7, the input end of output termination power amplifier 5.
Aforesaid multi-functional deaf person's language exerciser is characterized in that: before power amplifier 5, also can insert seven sections balanced devices 9, and these seven Frequency points are 250,500,1000,2000,4000,6000 and 8000HZ respectively.
Aforesaid multi-functional deaf person's language exerciser is characterized in that: the output of post amplifier 4 is with outside power amplifier is connected, and also is connected with corresponding dispenser output end by isolated amplifier 10.
Aforesaid multi-functional deaf person's language exerciser is characterized in that: microphone 1 is connected with transmitting set 11, and the output terminal of wireless receiver 12 is connected with prime amplifier 2.
The utlity model has that cost is low, distortion is little, noise is low, the independent advantage such as adjustable of two-channel volume and frequency response.
The drawing explanation:
Fig. 1 is the connection block diagram of embodiment one of the present utility model.
Fig. 2 is the connection block diagram of embodiment two of the present utility model.
Fig. 3 is the connection block diagram of embodiment three of the present utility model.
Fig. 4 is the connection block diagram of embodiment four of the present utility model.
Fig. 5 is the circuit diagram of the utility model prime amplifier.
Fig. 6 is the circuit diagram of the utility model post amplifier.
Fig. 7 is the circuit diagram that the utility model is followed sense amplifier.
Fig. 8 is the circuit diagram of the utility model power amplifier.
Embodiment of the present utility model sees accompanying drawing: 1 among Fig. 1 is the high-fidelity moving coil microphone, use in a minute for teacher, the 2nd, prime amplifier, the 3rd, divider, the output signal of prime amplifier is divided into 12 the tunnel, and is sent to separately on tens students' the desk by 12 core cables, 4 is post amplifier, this amplifier can be realized the separation from the monophonic signal to the binaural signal, and is provided with left and right sound channels tone controller and fader; This level has the AGC function, can improve fidelity, avoid deaf youngster's ear to be subjected to the stimulation of strong signal, 5 is power amplifier, be the two-channel high-fidelity power amplifier, the peripheral hardware negative-feedback circuit makes this amplifier distortion little, frequency response is wide, at full load, every sound channel output power is not less than 0.5W, to guarantee to promote dual-channel headphone, produce the powerful acoustic pressure about 140dB, 6 is the three-dimensional earphone of high-fidelity, and 7 is to follow to read microphone, and 8 for following sense amplifier, this amplifier is by preposition, and post amplifier two parts are formed.Circuit had increased by seven sections balanced devices 9 among Fig. 2 before power amplifier, this balanced device is the two-channel structure, it relies on seven slide potentiometers will export on seven Frequency points and promotes or decay, its adjustment amount is ± 20dB that seven frequencies are: 250,500,1000,2000,4000,6000 and 8000HZ.This just in time is audiometric seven the test frequency points of deaf ear.The output of post amplifier is in the feeding power amplifier among Fig. 3, some signal is delivered to isolated amplifier 10, be a teacher when puing question to, make which deaf youngster answer a question, only need the switch of correspondence is pressed, at this moment, the deaf youngster's of this number the speech signal of answering a question, feed back to divider through amplifier 10, deliver on other deaf youngsters' the table by divider again, so realized listening mutually.The effect of this isolated amplifier mainly is for fear of causing the signal self-excitation owing to signal feedback.Microphone 1 does not directly link to each other with prime amplifier among Fig. 4, but gets in touch in the radiowave mode by transmitting set 11 and wireless receiver 12.Microphone 1 adopts the microminiature Electret condenser microphone, and here wireless transceiver system adopts the ultrahigh frequency frequency modulation system, transmission frequency 150MHZ, and emissive power 5MW, receiver sensitivity is not less than 1 μ V, and EFFECTIVE RANGE is not less than 100 meters.Amplifier adopts two-way low-noise preamplifier ICAN7310, J among Fig. 5
1Be microphone input socket, J
2Line is used for importing auxiliary audio signal R such as televisor, video recorder, sound-track engraving apparatus
1And R
2Constitute the negative-feedback circuit of microphone amplifier, be used for adjusting among this Amplifier Gain Fig. 6 and control by thick film circuit IC6 automatic gain, IC8 four-operational amplifier LA6324 forms, IC8-1 is a buffer amplifier, IC8-2 and IC8-3 serve as left and right road modulator respectively, utilize the Resistor-Capacitor Unit among the thick film circuit IC7, as negative-feedback circuit, thereby high pitch had castering action, its lifting capacity is respectively by the external potentiometer W of IC7
6And W
7Control is regulated thereby finish frequency response.IC8-4 is the AGC amplifier, amplifies after its left and right sides road signal mixing with IC8-2 and IC8-3 output, more effectively to control the work of IC6.Left and right sound channels volume potentiometer W8 and W9 are delivered in the output of IC8-2 and IC8-3, so that control is input to the signal of power amplifier.Among Fig. 7 with the same described prime amplifier circuit of sense amplifier identical, only be that the front has increased by IC
1The prime amplifier of forming reaches with pronunciation amount controller W1.Power amplifier adopts double power amplifier ICTDA2822M, R among Fig. 8
14And R
15Be negative feedback resistor, be used for adjusting the gain of this grade left and right acoustic channels.Left and right sound track signals is imported by 6,7 legs, the output of 1,3 pin.When earphone impedance was 8 Ω, the every sound channel of this amplifier all had the above rated power output of 0.5W.
Claims (4)
1. multi-functional deaf person's language exerciser, it mainly is made up of microphone, amplifier, earphone and adjunct circuit; It is characterized in that: microphone is made up of high-fidelity moving coil microphone 1, the output termination prime amplifier 2 of high-fidelity moving coil microphone 1, the output terminal of prime amplifier 2 is connected with the input end of divider 3, the multi-channel output of described divider 3 is connected with earphone 6 with power amplifier 5 by post amplifier 4 respectively, described post amplifier is the monophonic signal input, binaural signal output, described power amplifier 5 is the two-channel high-fidelity power amplifier, and described earphone 6 is the three-dimensional earphone of two-channel; This device also comprises following for one to be read microphone 7 and follows sense amplifier 8, and described input termination with sense amplifier 8 is followed and read microphone 7, the input end of output termination power amplifier 5.
2. a kind of multi-functional deaf person's language exerciser as claimed in claim 1 is characterized in that: before power amplifier 5, also can insert seven sections balanced devices 9, and these seven Frequency points are 250,500,1000,2000,4000,6000 and 8000HZ respectively.
3. a kind of multi-functional deaf person as claimed in claim 1 self-training machine of speaking is characterized in that: the output of post amplifier 4 is with outside power amplifier is connected, and also is connected with corresponding dispenser output end by isolated amplifier 10.
4. a kind of multi-functional deaf person's language exerciser as claimed in claim 1, it is characterized in that: microphone 1 is connected with transmitting set 11, and the output terminal of wireless receiver 12 is connected with prime amplifier 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241470 CN2279663Y (en) | 1996-10-23 | 1996-10-23 | Multi-function language training machine for deaf person |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96241470 CN2279663Y (en) | 1996-10-23 | 1996-10-23 | Multi-function language training machine for deaf person |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2279663Y true CN2279663Y (en) | 1998-04-22 |
Family
ID=33915863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96241470 Expired - Fee Related CN2279663Y (en) | 1996-10-23 | 1996-10-23 | Multi-function language training machine for deaf person |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2279663Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104537925B (en) * | 2014-12-01 | 2017-01-25 | 杨颖� | Language barrier child language training auxiliary system and method |
-
1996
- 1996-10-23 CN CN 96241470 patent/CN2279663Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104537925B (en) * | 2014-12-01 | 2017-01-25 | 杨颖� | Language barrier child language training auxiliary system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4837832A (en) | Electronic hearing aid with gain control means for eliminating low frequency noise | |
| DE69028823T2 (en) | Electroacoustic arrangement for hearing aids with noise suppression | |
| US4598417A (en) | Electronic stethoscope | |
| US3920931A (en) | Hearing aid amplifiers employing selective gain control circuits | |
| GB1437129A (en) | Method and apparatus for imparting to headphones the sound- reproducing characteristics of loudspeakers | |
| DE2639834A1 (en) | BINAURAL MULTI-CHANNEL TEREOPHONY | |
| US4723293A (en) | Hearing aid apparatus | |
| Lewis | Assistive devices for classroom listening: FM systems | |
| CN2279663Y (en) | Multi-function language training machine for deaf person | |
| CN201701377U (en) | Multichannel arraying boosting type skin-hearing aid | |
| DE2451977A1 (en) | Sound reproduction system - uses headset with earphones and vibrators for transmitting sound direct to bones | |
| Littler | Hearing aids for the deaf | |
| DE19926552B4 (en) | Headphones with microphone | |
| CN2279662Y (en) | Deaf person language training machine adapted for outdoor movement | |
| DE10344032A1 (en) | Hearing system suitable for people with hearing loss | |
| EP0025509B1 (en) | Process for stereophonic transmission and means for carrying out the method | |
| DE2552475A1 (en) | Intercom for the hard:of:hearing - uses IR, ultrasonic or inductive transducers and portable transceivers with individual amplification control | |
| CN101703436A (en) | Multichannel array type skin audiophone | |
| US4406920A (en) | Monitor ampliphones | |
| US3050583A (en) | Controllable stereophonic electroacoustic network | |
| CN2168374Y (en) | Speech-training hearing aid | |
| CN101702786B (en) | Surround sound effect enhancing circuit | |
| CN214413022U (en) | Audio frequency division adjustment output device and VR equipment | |
| CN211831140U (en) | Single-track analog stereo circuit | |
| CA1132460A (en) | Monitor ampliphones |
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 |