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

Takuma Okamoto; Yukio Iwaya; Yoiti Suzuki

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

Takuma Okamoto, Yukio Iwaya, Yoiti Suzuki

Human Information Systems Division

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

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 language	English
Title of host publication	20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Pages	3009-3016
Number of pages	8
Publication status	Published - 2010 Dec 1
Event	20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society - Sydney, NSW, Australia Duration: 2010 Aug 23 → 2010 Aug 27

Publication series

Name	20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society
Volume	4

Other

Other	20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society
Country/Territory	Australia
City	Sydney, NSW
Period	10/8/23 → 10/8/27

ASJC Scopus subject areas

Acoustics and Ultrasonics

Cite this

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).

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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. 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society, vol. 4, pp. 3009-3016, 20th International Congress on Acoustics 2010, ICA 2010 - Incorporating the 2010 Annual Conference of the Australian Acoustical Society, Sydney, NSW, Australia, 10/8/23.

Okamoto T, Iwaya Y, Suzuki Y. 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. 2010. p. 3009-3016. (20th International Congress on Acoustics 2010, ICA 2010 - Incorporating Proceedings of the 2010 Annual Conference of the Australian Acoustical Society).

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

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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.",

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

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