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(40 min) Karl Freiberger, Stefan Huber, Peter Meerwald » Location: Hall i7 (main venue)
Ambient noise and acoustic echo reduction are indispensable signal processing
steps in a hands-free audio communication system. Taking the signals from
multiple microphones into account can help to more effectively reduce disturbing
noise and echo. This paper outlines the design and implementation of a
multi-channel noise reduction and echo cancellation module integrated in the
PulseAudio sound system. We discuss requirements, trade-offs and results
obtained from an embedded Linux platform.
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