Figure 3
From: Heart energy signature spectrogram for cardiovascular diagnosis
(A-E). Heart Energy Signature (HES) Format and Display [see Additional file 2]. A) Heart Energy Signature Spectrogram, cross hair shows locations of instantaneous extraction lines (A1: Eq. 13). B) Signal Plot (B1: Eq. 14). C) Normalized square root of Power (C1: Eq.15a). D) Instantaneous square root of Power, frequency = 107 Hz (D1: Eq.15b). E) Frequency Distributions (E1: Eq. 16). E2. Peak frequency 124 Hz, High frequency 133 Hz, Low frequency 111 Hz, half-bandwidth 11 Hz. E3. Peak frequency 128 Hz, High frequency 153 Hz, Low frequency 107 Hz, half bandwidth 23 Hz. All measured at 50% of maximum amplitude.