We are surrounded by noise; we must be able to separate the signals
we want to hear from those we do not. To overcome this 'cocktail
party effect' we have developed various strategies; endowing
computers with similar abilities would enable the development of
devices such as intelligent hearing aids and robust speech
recognition systems. This book describes a system which attempts to
separate multiple, simultaneous acoustic sources using strategies
based on those used by humans. It is both a review of recent work
on the modelling of auditory processes, and a presentation of a new
model in which acoustic signals are decomposed into elements. These
structures are then re-assembled in accordance with rules of
auditory organisation which operate to bind together elements that
are likely to have arisen from the same source. The model is
evaluated by measuring its ability to separate speech from a wide
variety of other sounds, including music, phones and other speech.
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