Two-Microphone Generalized Sidelobe Canceller with Post-Filter Based Speech Enhancement in Composite Noise

Jinsoo Park, Wooil Kim, David K. Han, Hanseok Ko

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper describes an algorithm to suppress composite noise in a two-microphone speech enhancement system for robust hands-free speech communication. The proposed algorithm has four stages. The first stage estimates the power spectral density of the residual stationary noise, which is based on the detection of nonstationary signal-dominant time-frequency bins (TFBs) at the generalized sidelobe canceller output. Second, speech-dominant TFBs are identified among the previously detected nonstationary signal-dominant TFBs, and power spectral densities of speech and residual nonstationary noise are estimated. In the final stage, the bin-wise output signal-to-noise ratio is obtained with these power estimates and a Wiener post-filter is constructed to attenuate the residual noise. Compared to the conventional beamforming and post-filter algorithms, the proposed speech enhancement algorithm shows significant performance improvement in terms of perceptual evaluation of speech quality.

Original languageEnglish
Pages (from-to)366-375
Number of pages10
JournalETRI Journal
Volume38
Issue number2
DOIs
Publication statusPublished - 2016 Apr 1

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Keywords

  • Beamforming
  • Generalized sidelobe canceller
  • Nonstationary noise
  • Spectral classification
  • Two-microphone speech enhancement
  • Wiener filter

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science(all)
  • Electronic, Optical and Magnetic Materials

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