Jacek P. Dmochowsky, Zicheng Liu, and Philip A. Chou
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.
|Published in||Int'l Conf. Acoustics, Speech, and Signal Processing|
|Publisher||Institute of Electrical and Electronics Engineers, Inc.|
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