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MATRA COMMUNICATIONS
FR2 patents
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US5963898AOct 5, 1999
Analysis-by-synthesis speech coding method with truncation of the impulse response of a perceptual weighting filter
MATRA COMMUNICATIONS44 citations88
US5848151ADec 8, 1998
Acoustical echo canceller having an adaptive filter with passage into the frequency domain
MATRA COMMUNICATIONS30 citations88