A method for estimating high-order Mel Frequency Cepstral Coefficients, the method comprising initializing any of N-L high-order coefficients (HOC) of an MFCC vector of length N having L low-order coefficients (LOC) to a predetermined value, thereby forming a candidate MFCC vector, synthesizing a speech...http://www.google.de/patents/US20040199381?utm_source=gb-gplus-sharePatent US20040199381 - Restoration of high-order Mel Frequency Cepstral Coefficients
