Password selection on automatic speaker recognition

The importance and the potential of password selection associating with Chinese speech characteristics are discussed and several rules are put forward; The method of time domain normalization solving the problem of speech dynamic variation is applied and improved.
Using 12th order LPCC and Pitch Period as Multi-parameter Verification Vector and using multi-passwords and multi-templates recognition method, in a normal laboratory the error probability of the text-dependent speaker verification is 0.6% on tape recorders.