Table 1 Murmur frequency resolution for STFT (Fig. 4A, and Figs. 7(A-D))
From: Heart energy signature spectrogram for cardiovascular diagnosis
Window size, w | Mean frequency, Hz | Half-bandwidth, Hz | Peak frequency, Hz | Low Frequency, Hz | High frequency, Hz |
|---|---|---|---|---|---|
HES | 107.5 | 53.7 | 112.9 | 53.76 | 161.29 |
16 | 114.4 | 114.4 | 37.68 | 0 | 228.79 |
256 | 113.0 | 24.22 | 99.59 | 88.8 | 137.3 |
1024 | 113.0 | 21.53 | 102.28 | 91.5 | 123.6 |