Blind directivity estimation of a sound source in a room using a surrounding microphone array

Takuma Okamoto, Yukio Iwaya, Yoiti Suzuki

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

Abstract

Sound sources in actual environments have no omni-directional feature, but they do have directivity in radiation. It is important to consider the directivity of a sound source when synthesizing a high-definition three-dimensional sound field. Therefore, we propose a simple but novel method to estimate the directivity of a sound source in a reverberant environment using a surrounding microphone array. Our method decomposes each observed signal of each microphone into an original sound signal; each impulse response is based on dereverberation technique. Furthermore, each impulse response is divided into two segments: an early response related to a directive feature and a late response related to reflections. The simulation results demonstrate the availability of our proposed method.

Original languageEnglish
Title of host publication20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Pages3009-3016
Number of pages8
Publication statusPublished - 2010 Dec 1
Event20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society - Sydney, NSW, Australia
Duration: 2010 Aug 232010 Aug 27

Publication series

Name20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Volume4

Other

Other20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society
CountryAustralia
CitySydney, NSW
Period10/8/2310/8/27

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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    Okamoto, T., Iwaya, Y., & Suzuki, Y. (2010). Blind directivity estimation of a sound source in a room using a surrounding microphone array. In 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society (pp. 3009-3016). (20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society; Vol. 4).