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Multifunctional comprehensive otoacoustic emission detector

A technology of otoacoustic emission and detector, which is applied in the field of signal processing and electronics, and can solve problems such as not being integrated together

Inactive Publication Date: 2013-08-14
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

Although otoacoustic emissions in the presence of CAS have been reported, there is no instrument that integrates unilateral and contralateral stimulus detection for various OAEs

Method used

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  • Multifunctional comprehensive otoacoustic emission detector
  • Multifunctional comprehensive otoacoustic emission detector
  • Multifunctional comprehensive otoacoustic emission detector

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the accompanying drawings and examples.

[0025] refer to figure 1 , the multi-functional comprehensive otoacoustic emission detector comprises: a first probe 1 with a microphone and a loudspeaker, a second probe 2 for playing contralateral stimulation sounds, and a device for filtering and amplifying the signal output by the microphone of the first probe 1 Front unit 3, computer system 4 for processing the signal processed by front unit 3, data acquisition card 41 and control and analysis software 42 are set in computer system 4, control and analysis software 42 is used to control the emission and reception of stimulating sound and process otoacoustic emission signals.

[0026] Both the first probe 1 and the second probe 2 are plug-type probes. The microphone in the first probe 1 is used to collect otoacoustic emission signals, and the speaker is used to play stimulation sounds. The second pro...

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Abstract

A multifunctional comprehensive otoacoustic emission detector comprises a first probe with a microphone and a loudspeaker, a second probe used for playing contralateral acoustic stimulation, a prepositive unit used for filtering and amplifying signals output by the microphone of the first probe, and a computer system for processing the signals processed by the prepositive unit. The computer system comprises an otoacoustic emission signal detection module, an otoacoustic emission signal preprocessing module, an otoacoustic emission signal processing module and a user interaction module, both the detection module and the precessing module comprises a plurality of submodules, the user interaction module comprises a detection and processing control module and a result display module, the detection and processing control module comprises a setting control member of otoacoustic emission types and contralateral stimulation signal types, and the result display module comprises a display control member of time domain waveforms, frequency spectra, noise distribution and the like. The multifunctional comprehensive otoacoustic emission detector can conveniently realize otoacoustic emission detection of different types as well as with / without contralateral acoustic stimulation.

Description

technical field [0001] The invention relates to a multifunctional comprehensive otoacoustic emission detector based on a data acquisition card, belonging to the technical fields of electronics and signal processing. Background technique [0002] The phenomenon of Otoacoustic Emissions (OAE) was first discovered in 1978 by the British D.T.Kemp. It refers to the detectable weak audio energy produced in the outer hair cells of the cochlea of ​​the inner ear and released to the external auditory canal through the conduction of the middle ear. The existence of OAE proves that the cochlea can not only passively receive external acoustic signals, but also actively generate audio energy and release it to the external auditory canal. OAE is an important part of auditory physiology. The characteristics of OAE can be used to understand the auditory physiology of the cochlea, which can reflect the hearing impairment of the ear. Compared with the normal ear, when the cochlea of ​​the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/12H04R29/00
Inventor 彭诚李俊奎钱翔
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
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