Augmented Cepstral Normalization for Robust Speech Recognition

  • Alex Acero ,
  • Xuedong Huang

Proc. of the IEEE Workshop on Automatic Speech Recognition |

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We proposed an augmented cepstral mean normalization algorithm that differentiates noise and speech during normalization, and computes a different mean for each. The new procedure reduced the error rate slightly for the case of same environment testing, and significantly reduced the error rate by 25% when an environmental mismatch exists over the case of standard cepstral mean normalization.