Extending Instantaneous De-mixing Algorithms to Anechoic Mixtures

Swarnadeep Bagchi, Ruairí de Fréin

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

Abstract

The AdRess algorithm separates sources that are mixed using stereo, pan-mixing in a computationally efficient way. Pan-mixing gives the sources a location by introducing a relative attenuation between the versions of the sources that appear on each channel. We extend this approach so that it can de-mix sources which experience both attenuations and delays, without significantly increasing the computational burden. Separation is achieved by AdRess by constructing a frequency-attenuation matrix. We introduce a new algorithm called Delayed-AdRess. Delayed-AdRess uses frequency-delay, time-delay and frequency-attenuation matrices to separate sources from anechoic mixtures, i.e. mixing scenarios where both attenuation and delays are experienced by the source signals. Numerical experiments on real speech mixtures demonstrate that for three and four source cases, D-AdRess improves the mean SNR of the de-mixed sources.

Original languageEnglish
Title of host publication2021 32nd Irish Signals and Systems Conference, ISSC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665434294
DOIs
Publication statusPublished - 10 Jun 2021
Event32nd Irish Signals and Systems Conference, ISSC 2021 - Athlone, Ireland
Duration: 10 Jun 202111 Jun 2021

Publication series

Name2021 32nd Irish Signals and Systems Conference, ISSC 2021

Conference

Conference32nd Irish Signals and Systems Conference, ISSC 2021
Country/TerritoryIreland
CityAthlone
Period10/06/2111/06/21

Keywords

  • Source separation
  • anechoic demixing
  • relative attenuation
  • relative delay
  • time-frequency

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