In this paper,we use wavelet package to de-noising ultrasonic inspection signal of this kind of defect.The result showed that noises were depressed well,SNR is improved obviously by using the m...

• 本文采用小波包对该类缺陷超声检测信号进行消噪,结果表明,该方法不仅能有效抑制噪声,而且能明显提高信噪比。