Paper Title:
Research of Filtering Algorithm for Echo of Ultrasonic Wave Based on Wavelet Transformation
  Abstract

This paper proposes an improved wavelet threshold denoising method, threshold function by selecting different thresholds to filter out the noisy signal. Firstly, do the wavelet transformation for noisy signal, and then use soft threshold, hard threshold and the improved threshold algorithm to denoising the signal, finally realized by Matlab simulation of wavelet thresholding. Threshold denoising via different methods of simulation experiments show that the improved threshold denoising algorithm can effectively filter plate bonding ultrasonic echo signal in the noise detection and can be a good feature to retain the original signal.

  Info
Periodical
Edited by
Zhou Mark
Pages
1212-1217
DOI
10.4028/www.scientific.net/AMM.52-54.1212
Citation
X. L. Zhu, Z. Zhang, "Research of Filtering Algorithm for Echo of Ultrasonic Wave Based on Wavelet Transformation", Applied Mechanics and Materials, Vols. 52-54, pp. 1212-1217, 2011
Online since
March 2011
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