Pseudocode of Method V.

The function that detects the first heart sound (S1) and the second heart sound (S2) waves has five inputs: the heart sound signal (HSsignal), event-related durations W1, W2, anticipated block width (BlockSize), and the offset (β). Daubechies 'db6' wavelet is used for filtering the signal and the wavelet detail D6 represents the heart sounds in the analysis.

用于检测第一心音（first heart sound, S1）与第二心音（second heart sound, S2）波形的检测函数，共包含五项输入参数：心音信号（heart sound signal, HSsignal）、事件相关时长W1与W2、预期块宽度（BlockSize）以及偏移量（β）。本次分析采用道布希斯（Daubechies）'db6'小波对信号进行滤波处理，且以小波细节分量D6表征本次分析中的心音信号。