METHOD FOR PROCESSING A VOICE SIGNAL IN ORDER TO COMPARE SAID SIGNAL TO A REFERENCE

摘要

The invention relates to a method for processing a voice signal (X) in order to compare said signal to a reference (Y), particularly in voice identification applications, speaker identity verification applications and other applications. According to the invention, the voice signal is converted to vector form (E-12) in a vector base of anchor models and the vector form obtained is normalised (E-13) by centring the vector form and performing a principal component analysis of the centred vector form. One such normalisation (E-13) can then be used to obtain a similarity measurement (E-14) which is sensitive to centring, such as a measurement of angular similarity between the normalised vector forms of the voice signal and of the reference. Tests have shown such a measurement to be particularly reliable.