Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus

Kenji Ozawa; Kanji Watanabe; Shuichi Sakamoto

doi:10.1109/GCCE53005.2021.9621869

Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus

Kenji Ozawa, Kanji Watanabe, Shuichi Sakamoto

Human Information Systems Division

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

1 Citation (Scopus)

Abstract

This study aims to separate four sound sources in the same direction using a small array with four microphones. The outputs of these microphones were shifted to create a virtual focus. When these outputs are considered as a two-dimensional (2D) image, the sound from a focus point generates vertical stripes, and its 2D spectrum is concentrated on the spatial direct current bin. Based on this property, the spectra of the four sounds were estimated by solving a set of equations. Computer simulation experiments demonstrated that the four sounds were separated successfully with a signal-to-distortion ratio exceeding 20 dB.

Original language	English
Title of host publication	2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	520-521
Number of pages	2
ISBN (Electronic)	9781665436762
DOIs	https://doi.org/10.1109/GCCE53005.2021.9621869
Publication status	Published - 2021
Event	10th IEEE Global Conference on Consumer Electronics, GCCE 2021 - Kyoto, Japan Duration: 2021 Oct 12 → 2021 Oct 15

Publication series

Name	2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021

Conference

Conference	10th IEEE Global Conference on Consumer Electronics, GCCE 2021
Country/Territory	Japan
City	Kyoto
Period	21/10/12 → 21/10/15

Keywords

instantaneous spectral estimation
sound source separation
spatio-temporal sound pressure distribution image
virtual focus

ASJC Scopus subject areas

Computer Science Applications
Signal Processing
Biomedical Engineering
Electrical and Electronic Engineering
Media Technology
Instrumentation

Access to Document

10.1109/GCCE53005.2021.9621869

Cite this

Ozawa, K., Watanabe, K., & Sakamoto, S. (2021). Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus. In 2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021 (pp. 520-521). (2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/GCCE53005.2021.9621869

Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus. / Ozawa, Kenji; Watanabe, Kanji; Sakamoto, Shuichi.

2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021. Institute of Electrical and Electronics Engineers Inc., 2021. p. 520-521 (2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021).

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

Ozawa, K, Watanabe, K & Sakamoto, S 2021, Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus. in 2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021. 2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021, Institute of Electrical and Electronics Engineers Inc., pp. 520-521, 10th IEEE Global Conference on Consumer Electronics, GCCE 2021, Kyoto, Japan, 21/10/12. https://doi.org/10.1109/GCCE53005.2021.9621869

Ozawa K, Watanabe K, Sakamoto S. Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus. In 2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021. Institute of Electrical and Electronics Engineers Inc. 2021. p. 520-521. (2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021). doi: 10.1109/GCCE53005.2021.9621869

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abstract = "This study aims to separate four sound sources in the same direction using a small array with four microphones. The outputs of these microphones were shifted to create a virtual focus. When these outputs are considered as a two-dimensional (2D) image, the sound from a focus point generates vertical stripes, and its 2D spectrum is concentrated on the spatial direct current bin. Based on this property, the spectra of the four sounds were estimated by solving a set of equations. Computer simulation experiments demonstrated that the four sounds were separated successfully with a signal-to-distortion ratio exceeding 20 dB.",

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author = "Kenji Ozawa and Kanji Watanabe and Shuichi Sakamoto",

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Separation of Sound Sources in the Same Direction via Spectral Estimation with a Virtual Focus

Abstract

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Keywords

ASJC Scopus subject areas

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