Blind source separation in a distributed microphone meeting environment for improved teleconferencing

Jacek P. Dmochowsky, Zicheng Liu, and Philip A. Chou

Abstract

From an audio perspective, the present state of teleconferencing

technology leaves something to be desired; speaker overlap is one

of the causes of this inadequate performance. To that end, this paper

presents a frequency-domain implementation of convolutive BSS

specifically designed for the nature of the teleconferencing environment.

In addition to presenting a novel depermutation scheme, this

paper presents a least-squares post-processing scheme, which exploits

segments during which only a subset of all speakers are active.

Experiments with simulated and real data demonstrate the ability of

the proposed methods to provide SIRs at or near that of the adaptive

noise cancellation (ANC) solution which is obtained under idealistic

assumptions that the ANC filters are adapted with one source being

on at a time.

Details

Publication typeInproceedings
Published inInt'l Conf. Acoustics, Speech, and Signal Processing
PublisherInstitute of Electrical and Electronics Engineers, Inc.
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