Fig. 2From: Feature compensation based on the normalization of vocal tract length for the improvement of emotion-affected speech recognitionThe process of frequency warping in the filterbank and/or DCT domain(s) to obtain the corresponding warped features of MFCC, M-MFCC, ExpoLog, GFCC, and PNCC in one or both of the warping domains. The dashed boxes represent the no-frequency warping cases. Intermediate operations performed for each feature extraction method are also shownBack to article page