A sample speech is analyzed by a speech analyzing unit to obtain sample characteristic parameters, and a coding distortion is calculated from the sample characteristic parameters in each of a plurality of coding modules. The sample characteristic parameters and the coding distortions are statistically...http://www.google.fr/patents/US6167373?utm_source=gb-gplus-shareBrevet US6167373 - Linear prediction coefficient analyzing apparatus for the auto-correlation function of a digital speech signal
Linear prediction coefficient analyzing apparatus for the auto-correlation ...