CN202875340U - Pure tone listening test system formed by means of digital sound card - Google Patents
Pure tone listening test system formed by means of digital sound card Download PDFInfo
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- CN202875340U CN202875340U CN 201220401042 CN201220401042U CN202875340U CN 202875340 U CN202875340 U CN 202875340U CN 201220401042 CN201220401042 CN 201220401042 CN 201220401042 U CN201220401042 U CN 201220401042U CN 202875340 U CN202875340 U CN 202875340U
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Abstract
The utility model provides a pure tone listening test system formed by means of a digital sound card. The system comprises an air conduction earphone, a bone conduction earphone, a speaker, a transponder and linking cables, and is characterized by further comprising a computer and a universal serial bus (USB) sound card. The air conduction earphone, the bone conduction earphone, the transponder and the speaker are respectively connected to designated ports in the USB sound card through the linking cables, and the USB sound card is installed on a USB port in the computer to serve as a signal output device. Compared with the prior art, in comparison with a traditional analogous electric audiometry instrument, the test system has strong competitivity in manufacture cost, the software has much reproductive probability, the whole system is strong in extensibility, the function can be designed abundantly, and humanized and interactive interfaces can be developed.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of audiometery system that utilizes digital audio care to form.
Background technology
Existing sonometer instrument is for all being to form independent analog hearing device by single-chip microcomputer and electronic circuit, and its effect of analog hearing device that has these now mainly depends on the making of hardware, its parts require precision and price is high, the limitation of the upgrading of function is very large, does not also have to occur by the audiometry instrument of computer sound card output signal take software as major control.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of and can effectively reduces manufacturing cost, and function is abundanter, the use is more convenient and the audiometery system that utilizes digital audio care to form of hommization.
The technical problems to be solved in the utility model is achieved in that a kind of audiometery system that utilizes digital audio care to form, comprise conductance earphone, osophone, speaker, responder and link cable, it is characterized in that: also comprise computer and USB sound card, described conductance earphone, osophone, responder and speaker are connected to the socket of appointment on the USB sound card by the link cable respectively, and described USB sound card is installed on the USB interface of computer as signal output apparatus.
Conversational system indication circuit and signal amplification circuit, reply mike amplifying circuit and question mike amplifying circuit that described USB sound card comprises the sound card circuit and is connected respectively to the sound card circuit, described sound card circuit is with analog-digital chip and modulus conversion chip, its analog-digital chip is sent to signal amplification circuit after being used for the digitized acoustical signal that computer sends converted to analogue signal, and its modulus conversion chip is used for that the analoging sound signal of responder is converted to digital signal and sends to computer and compare; Described conversational system indication circuit and signal amplification circuit carry out power amplification with analogue signal, are used for promoting conductance earphone and osophone; The amplification control of the microphone input signal of control responder when described reply mike amplifying circuit is intended for reply; The amplification control of the microphone input signal of control responder was provided with display lamp and buzzer when described question mike amplifying circuit was intended for question in its responder link.
Described sound card circuit comprises a DSP CM108 chip.
Described conversational system indication circuit and signal amplification circuit comprise two TDA1308 chips and an XPT4890 chip.
Described reply mike amplifying circuit and question mike amplifying circuit all comprise a TDA1308 chip.
Compared with prior art, this utility model mainly is by carrying out on computers the establishment of software, exported by sound card by software programming pure tone, the sound of twitering, NARROWBAND NOISE, BROADBAND NOISE, Vocal signal, and the Image Display of complex behavior audiometry realizes the assessment to patient's hearing loss, forms one and is embedded with the test macro that software is major control; The analog hearing device of prior art then lays particular emphasis on hardware and makes, and parts require precision and price is high, and the upgrading limitation of function is large.Therefore the traditional analog electric audiometry instrument contrast of test macro of the present utility model and mould, in manufacturing cost extremely strong competitiveness is arranged, and software has the probability of massive duplication, the whole system extensibility is more intense, can carry out the more design of horn of plenty on the function, develop more humane interactively interface.
Description of drawings
In conjunction with the embodiments this utility model is further described with reference to the accompanying drawings.
Fig. 1 is the overall structure schematic block diagram that this utility model utilizes the audiometery system of digital audio care formation.
Fig. 2 is the structure connection layout that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms.
Fig. 3 is the sound card circuit connection diagram that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms.
Fig. 4 is conversational system indication circuit and the signal amplification circuit figure that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms.
Fig. 5 is the circuit diagram of the reply mike amplifying circuit of this utility model USB sound card of utilizing the audiometery system that digital audio care forms.
Fig. 6 is the circuit diagram of the question mike amplifying circuit of this utility model USB sound card of utilizing the audiometery system that digital audio care forms.
The specific embodiment
See also Fig. 1, it is the structural representation block diagram that this utility model utilizes the audiometery system of digital audio care formation, the described audiometery system that utilizes digital audio care to form, comprise conductance earphone, osophone, speaker, responder, link cable, computer and USB sound card, described conductance earphone, osophone, responder and speaker are connected to the socket of appointment on the USB sound card by the link cable respectively, and described USB sound card is installed on the USB interface of computer as signal output apparatus.Wherein, testing software is installed on the computer, is used for the data-base content of operation testing function and storage calibrator (-ter) unit, the demonstration that comprises conductance test, bone conduction test, masking function, audiometric curve etc. is arranged in the software the inside; The link cable sends to earphone or each speaker for connecting computer and sound card, conductance and osophone, speaker with data signal under test; Conductance (HD39) earphone, speaker are used for receiving signal and sounding; Responder and mike are used for exchanging the feedback test result between tested personnel and the tester and test is experienced.
Such as Fig. 2, be the circuit connection diagram that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms, described USB sound card comprises sound card circuit, conversational system indication circuit and signal amplification circuit, reply mike amplifying circuit and question mike amplifying circuit.
Be the sound card circuit diagram that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms such as Fig. 3, described sound card circuit is used for digitized acoustical signal is converted to analogue signal with analog-digital chip (DAC); Also have simultaneously modulus conversion chip (ADC), be used for analoging sound signal is converted to digital signal; The chip that adopts in the present embodiment is DSP(CM108), employing is 16Bit, output is at 120dBspl.
Such as Fig. 4, conversational system indication circuit and the signal amplification circuit figure that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms, described conversational system indication circuit and signal amplification circuit, its Main Function is that analogue signal is carried out power amplification, is used for promoting left ear, auris dextra, osophone.That two TDA1308 chips adopting and XPT4890 chip and peripheral circuit thereof are realized in the present embodiment.
Such as Fig. 5, be the reply mike amplifying circuit that this utility model utilizes the USB sound card of the audiometery system that digital audio care forms, the amplification control of the microphone input signal of control responder when described reply mike amplifying circuit is intended for reply; That TDA1308 chip and the peripheral circuit thereof that adopts realized in the present embodiment.
Such as Fig. 6, it is the circuit diagram of the question mike amplifying circuit of this utility model USB sound card of utilizing the audiometery system that digital audio care forms, the amplification control of the microphone input signal of control responder was provided with display lamp and buzzer when described question mike amplifying circuit was intended for question in its responder link.
This utility model divides two parts of installation and use of hardware and software in use:
1, the installation of hardware and use:
A) conductance test: the left and right sides ear plug of conductance (HD39) earphone is inserted respectively socket specified on the USB sound card, then insert patient's responder,, afterwards by the USB mouth of link cable with USB sound card access computer;
B) bone conduction test: the plug of bone conduction (BONE71) earphone is inserted specified socket on the USB sound card, then insert patient's responder,, afterwards by the USB mouth of link cable with USB sound card access computer;
C) sound field test: the left plug of speaker is inserted above the left and right sides ear of amplifier, again the left and right sides ear of amplifier is connected to the left and right sides ear of USB sound card, then by the USB mouth of link cable with USB sound card access computer;
D) pure tone test: should be quietly using in the room, so that sound is not subjected to the impact of outside noise; In order in the environment of making a lot of noise, to use earphone, can use the isolates sound cover; Electronic medical equipment sends strong magnetic field, can affect the effect of hearing device, therefore, forbids to use this kind equipment around the hearing device.
2, the installation and use of software:
Install: optical disk of software is inserted CD-ROM drive (perhaps using USB flash disk to install), open CD, then click installation file, install according to installation suggestion;
Use: software interface have left and right sides ear switch key, pulse sound/long switch key, the pure tone/sound switch key of twitering, BROADBAND NOISE/NARROWBAND NOISE switch key, conductance/bone conduction switch key, frequency switch key, pronunciation button on/off, speech/behavioral function key, curve display figure etc. intuitively button can operate easily.
The operation principle of whole system: mainly be by a plurality of functional module combination (as: tonal signal, the tone signal of twitering, noise signal, Vocal signals, calibration module etc.) the audition checkout equipment by computer control that forms, the acoustics requirement of Main Basis hearing test and hearing aid fitting is adopted digital technology, in conjunction with the advanced person's of this area audiometry and the micro computer hearing test instrument of hearing aid fitting technological development development.
Claims (5)
1. audiometery system that utilizes digital audio care to form, comprise conductance earphone, osophone, speaker, responder and link cable, it is characterized in that: also comprise computer and USB sound card, described conductance earphone, osophone, responder and speaker are connected to the socket of appointment on the USB sound card by the link cable respectively, and described USB sound card is installed on the USB interface of computer as signal output apparatus.
2. the described audiometery system that utilizes digital audio care to form according to claim 1, it is characterized in that: described USB sound card comprises the sound card circuit, and the conversational system indication circuit and the signal amplification circuit that are connected respectively to the sound card circuit, reply mike amplifying circuit and question mike amplifying circuit, described sound card circuit is with analog-digital chip and modulus conversion chip, its analog-digital chip is sent to signal amplification circuit after being used for the digitized acoustical signal that computer sends converted to analogue signal, and its modulus conversion chip is used for that the analoging sound signal of responder is converted to digital signal and sends to computer and compare; Described conversational system indication circuit and signal amplification circuit carry out power amplification with analogue signal, are used for promoting conductance earphone and osophone; The amplification control of the microphone input signal of control responder when described reply mike amplifying circuit is intended for reply; The amplification control of the microphone input signal of control responder was provided with display lamp and buzzer when described question mike amplifying circuit was intended for question in its responder link.
3. the described audiometery system that utilizes digital audio care to form according to claim 2, it is characterized in that: described sound card circuit comprises a DSP CM108 chip.
4. the audiometery system that utilizes digital audio care to form according to claim 2, it is characterized in that: described conversational system indication circuit and signal amplification circuit comprise two TDA1308 chips and an XPT4890 chip.
5. the described audiometery system that utilizes digital audio care to form according to claim 2, it is characterized in that: described reply mike amplifying circuit and question mike amplifying circuit all comprise a TDA1308 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220401042 CN202875340U (en) | 2012-08-14 | 2012-08-14 | Pure tone listening test system formed by means of digital sound card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220401042 CN202875340U (en) | 2012-08-14 | 2012-08-14 | Pure tone listening test system formed by means of digital sound card |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202875340U true CN202875340U (en) | 2013-04-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220401042 Expired - Lifetime CN202875340U (en) | 2012-08-14 | 2012-08-14 | Pure tone listening test system formed by means of digital sound card |
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| Country | Link |
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| CN (1) | CN202875340U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835959A (en) * | 2012-08-14 | 2012-12-26 | 丽声助听器(福州)有限公司 | Pure tone audiometric system formed by utilizing digital sound card |
| CN103263269A (en) * | 2013-05-10 | 2013-08-28 | 杭州惠耳听力技术设备有限公司 | Speech resolution assessing method for multifunctional hearing aid |
| CN104720975A (en) * | 2015-03-24 | 2015-06-24 | 李元霞 | Ear-nose-throat therapeutic device |
-
2012
- 2012-08-14 CN CN 201220401042 patent/CN202875340U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102835959A (en) * | 2012-08-14 | 2012-12-26 | 丽声助听器(福州)有限公司 | Pure tone audiometric system formed by utilizing digital sound card |
| CN103263269A (en) * | 2013-05-10 | 2013-08-28 | 杭州惠耳听力技术设备有限公司 | Speech resolution assessing method for multifunctional hearing aid |
| CN104720975A (en) * | 2015-03-24 | 2015-06-24 | 李元霞 | Ear-nose-throat therapeutic device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130417 |