Figure 6From: Detection of the valvular split within the second heart sound using the reassigned smoothed pseudo Wigner–Ville distribution Instantaneous frequency of the simulated A2 (duration: 60 ms, frequency:250 →53 Hz) and P2 (duration: 60 ms, frequency: 200 →50 Hz) components of the S2 heart sound, A2–P2 valvular split: 30 ms. Back to article page