The effect of reverberation on the performance of cepstral mean subtraction in speaker verification

Noam R. Shabtai, Boaz Rafaely, Yaniv Zigel

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

Speaker verification (SVR) performance is degraded under reverberation conditions. Cepstral mean subtraction (CMS) is often applied to the feature vectors in order to compensate for convolutive effects of transmission channels, which are considered to have a short-duration impulse response. The effect of reverberation on the performance of CMS applied to the feature vectors in SVR is investigated. Although CMS was found effective in reducing the effect of reverberation for short reverberation time (RT), in cases of long RT, it is shown that CMS may degrade SVR performance rather than improve it. Hence, CMS should not to be used in these cases. In addition, the effect of the room volume was tested and found less critical than the effect of long RT.

Original languageEnglish
Pages (from-to)124-126
Number of pages3
JournalApplied Acoustics
Volume72
Issue number2-3
DOIs
StatePublished - 1 Feb 2011

Keywords

  • Cepstral mean subtraction
  • Reverberation
  • Speaker recognition

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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