There is provided a method for extracting feature vectors from a digitized utterance. Spectral envelope estimates are computed from overlapping frames in the digitized utterance based on a Minimum Variance Distortionless Response (MVDR) method. Cepstral feature vectors are generated from the spectral...http://www.google.de/patents/US20030144839?utm_source=gb-gplus-sharePatent US20030144839 - MVDR based feature extraction for speech recognition
