The main effort in the PQRST feature extraction is finding the exact location of the waves (Figure 5.1 shows the PQRST waves and the location points). After finding the waves’ locations, the determination of the waves amplitudes and shapes is much si

语音信号的短时能量计算，可以计算语音信号的短时能量，在不同窗口形状与长度下-Short-term energy of the speech signal, can calculate the time speech signal energy at different window shapes and lengths

Code for scan an image with a segmentation algorithm, and found patrons or shapes