Telephonic communications – Echo cancellation or suppression
Patent
1996-09-30
1999-12-14
Isen, Forester W.
Telephonic communications
Echo cancellation or suppression
379 24, 379389, 379420, 381 58, 704233, H04M 900, H04R 2900
Patent
active
060027622
ABSTRACT:
A digital signal processor is provided with the facility to measure accurately, and nonintrusively, the levels of noise and/or speech signals appearing on an in-service network connection.
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AT&T Corp
Isen Forester W.
Saint-Surin Jacques M.
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