Spectral analysis of heart sounds

Abstract

The problem of studying heart sounds is reduced to the spectral decomposition of these sounds, i.e., to a quantitative and qualitative analysis, which serves as a spectral analysis, and to the determination of the duration of tones and noises and their place in the cardiac cycle, which is possible when studying the PCG recorded together with the ECG. In this aspect, you can schematically imagine the sounds of the heart as they are shown in the figure, where the three main criteria of sounds are reflected (time, frequency, amplitude).

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