Research on Two Dimensional Visualization of Heart Sound Signal Based on Variant Model Theory

Cardiac auscultation plays an important role in the diagnosis of heart disease. Domestic and foreign researchers have done a lot of research on the analysis of heart sound signals from the point of view of signals, hoping to find an effective signal analysis method to assist doctors in the diagnosis of congenital heart disease. This paper introduces a new method to perform a series of logical transformations on the envelope of the heart sound signal, making it a two-dimensional scatter plot, and reflecting its characteristics in the case that the characteristics of the original signal are not substantially lost. In the dispersal point distribution map, different features of different pathological heart sound signals can be directly observed in the corresponding two-dimensional scatter plot.