Reducing Ultrasonic Signal Noise by Algorithms based on Wavelet Thresholding

M. Kreidl, P. Houfek


Traditional techniques for reducing ultrasonic signal noise are based on the optimum frequency of an acoustic wave, ultrasonic probe construction and low-noise electronic circuits. This paper describes signal processing methods for noise suppression using a wavelet transform. Computer simulations of the proposed testing algorithms are presented.


ultrasonic testing; wavelet transform; thresholding of wavelet coefficients; de-noising algorithms

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ISSN 1210-2709 (Print)
ISSN 1805-2363 (Online)
Published by the Czech Technical University in Prague