从信号处理的角度给出了小波变换的工程理解.小波变换可以看作从原始信号中不断抽取细节,最终只留下信号主干的过程.用小波变换对噪声材料粗晶奥氏体不锈钢中人工缺陷的超声A型信号处理的结果表明,在对小波系数合理解释的情况下, 小波变换能有效地提高信噪比.
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