Before analyzing the pulse wave signal, it is very important to denoise the signal. This paper uses the Mallat algorithm to perform multi-resolution analysis and denoising on the pulse wave signal, and analyzes the denoising principles of the threshold method, translation invariant method, and modulus maximum method respectively. Through a large number of experimental comparisons, their advantages and disadvantages in processing pulse wave signals are compared. By denoising a noisy pulse wave signal, a satisfactory denoising effect is obtained.
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