Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate
2005-03-29
2005-03-29
Tieu, Binh (Department: 2663)
Telephonic communications
Echo cancellation or suppression
Using digital signal processing
C379S406140, C370S290000
Reexamination Certificate
active
06873704
ABSTRACT:
An echo canceler for canceling echo components having a plurality of cascade-connected adaptive filters and a plurality of update control means. The echo canceler may further include an update control selective circuit for generating selective signals which enable or disable the update control means. Power values of opposite speech signals generated from the adaptive filters are used to control the updating of filter coefficients of the adaptive filters.
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F. Chau & Associates LLC
Samsung Electronics Co. LTD
Tieu Binh
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