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

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.

DmochowskiLC08.pdf
PDF file

In  Int'l Conf. Acoustics, Speech, and Signal Processing

Publisher  Institute of Electrical and Electronics Engineers, Inc.
© 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.

Details

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