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PAG Signal Processing for human recording showing unprocessed PAG signal (A), denoised using bruit-enhancing filter (B). Continuous wavelet transform (CWT) of the enhanced signal is calculated for auditory feature extraction (C). Auditory Spectral Flux (ASF) approximates a spectral first derivative and is used to segment the waveforms into segments for segmented feature extraction (D). Auditory Spectral Centroid (ASC) is the spectral ”center of gravity” (E).
