Analysis of pulse wave signal based on the wavelet transform

Pulse wave waveform is Changed when the pulse signal generated baseline drift, toward the identification and analysis of pulse signals have a greater impact. The traditional FIR filter of order,often lead to thousands of its order. Although the use of IIR filters can reduce the order of filter, but the IIR filter will cause the nonlinear phase and shift pulse waveform distortion, waveform after filtering is often only detected the heart rate. In view of this, we adopt wavelet denoising in ensuring the premise of distortions to remove the baseline drift pulse signals.