Portable all-purpose otoacoustic emission detecting system

An otoacoustic emission and detection system technology, applied in the field of medical devices, can solve the problems of high price, unfavorable replacement and portability, and inability to give quantitative index diagnosis results.
CN101732054BActive Publication Date: 2012-07-25TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2012-07-25

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Abstract

The invention relates to a portable all-purpose otoacoustic emission detecting system which belongs to the field of otoacoustic emission signal detectors and is characterized by comprising a portable PC (Personal Computer), a USB (Universal Serial Bus) sound card, a miniature loudspeaker, a miniature radio, a preprocessing circuit and a power supply, wherein the miniature loudspeaker comprises two sounders which can respectively send out stimulating sounds capable of evoking a transient evoked otoacoustic emission signal and a distortion product otoacoustic emission signal, the portable PC isprovided with a USB sound card sensitivity calibration module and a miniature loudspeaker sensitivity calibration module, the PC, the USB sound card and the miniature loudspeaker form a stimulating sound playing path, and the miniature radio, the preprocessing circuit, the USB sound card and the PC form an otoacoustic emission signal acquisition path. The invention realizes the integrated detection for the transient otoacoustic emission signal and the distortion product otoacoustic emission signal and simultaneously realizes the portability of the all-purpose otoacoustic emission signal detecting system.
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Description

Technical field:

[0001] The invention is a portable full-function otoacoustic emission detection system, in particular to a portable otoacoustic emission detection system based on a USB multimedia sound card, which belongs to the technical field of medical equipment. Background technique:

[0002] Otoacoustic Emissions (OAE) refers to a kind of weak audio energy produced in the cochlea of ​​the inner ear, which is transmitted to the external auditory canal through the ossicular chain and tympanic membrane, and is part of the normal function of the human ear. This phenomenon was first discovered by British scholar David Kemp in 1978 and applied clinically [2] . The discovery of otoacoustic emission has confirmed that the cochlea, as a peripheral auditory receptor, can not only passively convert external acoustic signals into bioelectrical signals and transmit them to the center to cause hearing, but also has an active energy release process, thus establishing that the cochle...

Claims

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