Underdetermined methods for multichannel audio enhancement with partial preservation of background sources

Ryan M. Corey, Andrew C. Singer

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

Abstract

Multichannel audio enhancement and source separation traditionally attempt to isolate a single source and remove all background noise. In listening enhancement applications, however, a portion of the background sources should be retained to preserve the listener's spatial awareness. We describe a time-varying spatial filter designed to apply a different gain to each sound source with minimal distortion of the source spectra and background spatial cues. The filter, inspired by methods from underdetermined source separation, adjusts its parameters at each time-frequency bin to preserve dominant sources. The time-varying filter enjoys greater flexibility than a fixed filter, while partial background preservation improves robustness to noise and errors.

Original languageEnglish (US)
Title of host publication2017 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages26-30
Number of pages5
ISBN (Electronic)9781538616321
DOIs
StatePublished - Dec 7 2017
Event2017 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2017 - New Paltz, United States
Duration: Oct 15 2017Oct 18 2017

Publication series

NameIEEE Workshop on Applications of Signal Processing to Audio and Acoustics
Volume2017-October

Other

Other2017 IEEE Workshop on Applications of Signal Processing to Audio and Acoustics, WASPAA 2017
Country/TerritoryUnited States
CityNew Paltz
Period10/15/1710/18/17

Keywords

  • Beamforming
  • audio source separation
  • hearing AIDS
  • microphone arrays
  • speech enhancement

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Science Applications

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