基于Labview平台的耳声发射综合检测系统的研制.doc


基于 Labview 平台的耳声发射综合检测系
统的研制#
彭诚,李俊奎,杭圣超*
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(清华大学深圳研究生院生物医学工程系,广东深圳 518055)
摘要:耳声发射(OAE)是一种产生于内耳耳蜗,经中耳传导释放到外耳道的能被检测到的
微弱音频能量。OAE 的发现证明了耳蜗不仅能被动接收声信号,也能主动释放音频能量,
从而确立了耳蜗是一个双向换能器的学说。根据刺激声的有无,可将 OAE 分为自发耳声发
射(SOAE)和诱发耳声发射(EOAE)两大类,而不同的刺激声也会诱发出不同的耳声发
射。为了检测并分析多种耳声发射,本课题组开发了一个综合多功能的耳声发射检测系
统。该系统使用 NI 公司的 USB6211 数据采集卡进行信号的 A/D 和 D/A 变换,运行于
Labview 平台,实现了无 CAS 或存在 CAS 的 SOAE、SSOAE(同步 SOAE)、TEOAE 和
DPOAE 的检测,并能进行响应的对应 OAE 的信号分析。
关键词:耳声发射;对侧刺激;Labview
中图分类号:
Development of an OAE detecting system based on USB
DAQ and Labview
Peng Cheng, Li Junkui, Hang Shengchao
(Department of biomedical engineering, Graduate School at Shenzhen, Tsinghua University,
GuangDong ShenZhen 518055)
Abstract: Otoacoustic emission (OAE) is an acoustic energy, which can be detected, evoked from
human cochlea and transmitted to the outer ear through middle ear canal. The recognition of OAE
help establish a theory that cochlea is a bidirectional converter, it means that that the cochlea not
only receives sound, but also produces acoustic energy. Based on the existence of stimulation,
OAE can be classified to spontaneous OAE(SOAE) and Evoked OAE(EOAE), and different
stimulation will evoke different OAE. In order to detect these OAEs, a multifunctional OAE
detecting system is developed. This system, which is based on the NI DAQ USB6211 and
Labview, has