Multi-channel noise reduction with beamforming and masking-based Wiener filtering for human-robot interface

Jungpyo Hong, Keunseok Cho, Minsoo Hahn, Suhwan Kim, Sangbae Jeong

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

In this paper, an efficient noise reduction algorithm is proposed for robust speech recognition. For the nonstationary noise reduction, frequency-domain beamforming-based speech enhancement is performed and masking-based Wiener filter is applied to the beamforming output. To design the masking-based Wiener filter, the spectrum of beamforming output is classified into noise spectrum and speech spectrum at each spectral bin by the inter-channel time delay between two reference inputs. Hamming windowing for the speech spectrum and noise spectrum is separately performed to smooth each spectrum. Then, the Wiener filtering is applied to the beamforming output. The performance of the proposed algorithm significantly improves the speech recognition accuracies and the signal-to-noise ratios.

Original languageEnglish
Title of host publicationICARA 2011 - Proceedings of the 5th International Conference on Automation, Robotics and Applications
Pages260-264
Number of pages5
DOIs
StatePublished - 2011 Dec 1
Event5th International Conference on Automation, Robotics and Applications, ICARA 2011 - Wellington, New Zealand
Duration: 2011 Dec 62011 Dec 8

Publication series

NameICARA 2011 - Proceedings of the 5th International Conference on Automation, Robotics and Applications

Other

Other5th International Conference on Automation, Robotics and Applications, ICARA 2011
CountryNew Zealand
CityWellington
Period11/12/611/12/8

Keywords

  • Speech enhancement
  • Wiener filter
  • beamforming
  • generalized sidelobe canceller

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    Hong, J., Cho, K., Hahn, M., Kim, S., & Jeong, S. (2011). Multi-channel noise reduction with beamforming and masking-based Wiener filtering for human-robot interface. In ICARA 2011 - Proceedings of the 5th International Conference on Automation, Robotics and Applications (pp. 260-264). [6144892] (ICARA 2011 - Proceedings of the 5th International Conference on Automation, Robotics and Applications). https://doi.org/10.1109/ICARA.2011.6144892