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介绍了信号奇异性及正则性的数学概念以及如何利用小波变换测量信号的奇异性及正则性。介绍了小波去噪原理及优越性，提出一种简单、实用的小波去噪方法。
The mathematical concepts of signal singularity and regularity are introduced and how to measure the singularity and regularity of signals by wavelet transform. Introduced the principle and advantages of wavelet denoising, and proposed a simple and practical wavelet denoising method.