Table 2 Acoustic features
From: Acoustic differences between healthy and depressed people: a cross-situation study
Name of feature | Explanation |
|---|---|
Loudness | subjective perception of sound volume |
Fundamental frequency (F0) | lowest frequency of a periodic waveform |
F0 envelope | the envelope of the smoothed F0 contour |
Zero-crossing rate (zcr) | the rate of sign-changes along a signal |
Voicing probability (vp) | the rate of voicing in one speech |
Mel-frequency cepstrum coefficients (MFCCs) | vocal tract changes in a certain voice spectral energy |
Line Spectral Pairs (LSPs) | quantization of linear prediction coefficients (LPC) for transmission over a channel |