Separation of multiple sound sources in the same direction by instantaneous spectral estimation

Kenji Ozawa, Kanji Watanabe, Shuichi Sakamoto

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

Abstract

This project aims to separate sound sources in the same direction using a small array of microphones arranged on an arc. When the output pattern of instantaneous sound pressures from the array is regarded as an image, the center of the arc is a singular point because its two-dimensional frequency components are concentrated in the spatial direct current (DC) bin. Based on this property, the noise spectral DC components are estimated by solving simultaneous equations. Computer simulation experiments demonstrated that a 6-cm array achieved a clear separation of three sound sources with the signal-to-distortion ratio of about 20 dB.

Original languageEnglish
Title of host publication2020 IEEE 9th Global Conference on Consumer Electronics, GCCE 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages32-33
Number of pages2
ISBN (Electronic)9781728198026
DOIs
Publication statusPublished - 2020 Oct 13
Event9th IEEE Global Conference on Consumer Electronics, GCCE 2020 - Kobe, Japan
Duration: 2020 Oct 132020 Oct 16

Publication series

Name2020 IEEE 9th Global Conference on Consumer Electronics, GCCE 2020

Conference

Conference9th IEEE Global Conference on Consumer Electronics, GCCE 2020
CountryJapan
CityKobe
Period20/10/1320/10/16

Keywords

  • arc-shaped microphone array
  • instantaneous spectral estimation
  • simultaneous equations
  • spatio-temporal sound pressure distribution image

ASJC Scopus subject areas

  • Signal Processing
  • Electrical and Electronic Engineering
  • Media Technology
  • Instrumentation
  • Computer Networks and Communications
  • Computer Vision and Pattern Recognition

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