Study of speech intelligibility in noisy enclosures using optimal spherical beamforming

Yotam Peled, Boaz Rafaely

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

Reverberation and noise have a significant effect on the intelligibility of speech in rooms. Detection of clear speech in highly reverberantand noisy enclosures is an extremely difficult problem. In this work we take the approach of spatial filtering by spherical microphone array to overcome noise and reverberation. In order to investigate speech intelligibility, an acoustic model was developed. The model is based on U50, which was shown to have good correlation with speech intelligibility, while combining the effect of both reverberation and noise. This paper presents the array beamforming design for optimal speech intelligibility performance. The beamformer is designed to enhance the speech signal while minimizing noise power and maintaining robustness at a wide frequency range. Having such a model allows the prediction of the required array order for detecting speech clearly.

Original languageEnglish
Title of host publication2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Pages285-289
Number of pages5
DOIs
StatePublished - 1 Dec 2008
Event2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008 - Eilat, Israel
Duration: 3 Dec 20085 Dec 2008

Publication series

NameIEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings

Conference

Conference2008 IEEE 25th Convention of Electrical and Electronics Engineers in Israel, IEEEI 2008
Country/TerritoryIsrael
CityEilat
Period3/12/085/12/08

Keywords

  • MVDR
  • Reverberation
  • Room acoustics
  • Speech intelligibility
  • Spherical microphone array

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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