A similarity degree estimation method is performed by two processes. In a first process, an inter-band correlation matrix is created from spectral data of an input voice such that the spectral data are divided into a plurality of discrete bands which are separated from each other with spaces therebetween...http://www.google.com.au/patents/US7996213?utm_source=gb-gplus-sharePatent US7996213 - Method and apparatus for estimating degree of similarity between voices
