Steven C Barnes

US Patent:

20050213747, Sep 29, 2005

Filed:

Oct 6, 2004

Appl. No.:

10/959414

Inventors:

Steven Popovich - Little Chute WI, US
Steven Barnes - Austin TX, US

International Classification:

H04M009/08

US Classification:

379406030, 379406100

Abstract:

A method including several steps is provided for selectively combining single-channel and multi-channel signals for loudspeaker output. A single-channel signal () is created () based on an inbound multi-channel signal (). A local voice activity level and a remote voice activity level are detected (). If the remote voice activity level dominates the local voice activity level, α is set equal to a first percentage (). Otherwise, α is set equal to a second percentage higher than the first percentage (). At least one loudspeaker output signal () is mixed comprising a proportion of the single-channel signal based on α and a proportion of the inbound multi-channel signal based on 1−α. A computer program product is also provided for the preceding method. An apparatus is also provided, including a receive combiner (), a sound activity monitor (), a mix and amplitude selector (), and a monaural and stereo mixer (). A system is also provided having a receive channels analysis filter ().