噪声与振动控制

›› 2011, Vol. 31 ›› Issue (6): 169-171.DOI: 10.3969/j.issn.1006-1355-2011.06.038

• 6.信号处理与故障诊断 • 上一篇    下一篇

瞬态诱发耳声发射信号的小波去噪方法

谢宝玲,吴克勤,范丽华,赵莲花,张琳琳   

  1. （ 1. 沈阳工业大学， 辽宁 辽阳 111003； 2. 上海理工大学， 上海 200093 ）
  • 收稿日期:2011-03-02 修回日期:2011-05-03 出版日期:2011-12-18 发布日期:2011-12-18
  • 通讯作者: 谢宝玲

Method of Wavelet Denoising and Its Application to Analysis of Transient Evoked Otoacoustic Emissions

XIE Bao-ling,WU Ke-qin,FAN Li-hua,ZHAO Lian-hua, ZHANG Lin-lin   

  1. ( 1. Shenyang University of Technology, Liaoyang 111003, Liaoning China;2. Shanghai University of Science and Technology,Shanghai 200093,China )
  • Received:2011-03-02 Revised:2011-05-03 Online:2011-12-18 Published:2011-12-18
  • Contact: XIE Bao-ling

摘要： 在真实的瞬态诱发耳声发射信号中，加上合理的噪声信号，模拟采集的瞬态诱发耳声发射信号。用传统的和小波变换去噪方法对模拟信号进行去噪处理，分析去噪效果。找到了合适的小波参量，使去噪后的相关率和信噪比指标提高，减少了检测时间。

关键词: 声学, 耳声发射, 小波变换, 去噪

Abstract: Noises are artificially added to a real Transiently-Evoked Otoacoustic-Emission (TEOAE) signal to stimulate the collected TEOAEs signal. Then, the stimulated signal is denoised using traditional denoising method and wavelet transform method, and the results are analyzed. The suitable wavelet parameters for TEOAEs are found to improve the correlation ratio and the signal-to-noise ratio of the results, and to reduce the inspecting time.

Key words: acoustics, otoacoustic emissions, wavelet transformation, denoising

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