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

Kenji Ozawa, Kanji Watanabe, Shuichi Sakamoto

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

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 languageEnglish
Title of host publication2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages520-521
Number of pages2
ISBN (Electronic)9781665436762
DOIs
Publication statusPublished - 2021
Event10th IEEE Global Conference on Consumer Electronics, GCCE 2021 - Kyoto, Japan
Duration: 2021 Oct 122021 Oct 15

Publication series

Name2021 IEEE 10th Global Conference on Consumer Electronics, GCCE 2021

Conference

Conference10th IEEE Global Conference on Consumer Electronics, GCCE 2021
Country/TerritoryJapan
CityKyoto
Period21/10/1221/10/15

Keywords

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

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