Telephonic communications – Echo cancellation or suppression – Using digital signal processing
Reexamination Certificate
2000-10-31
2010-06-29
Jamal, Alexander (Department: 2614)
Telephonic communications
Echo cancellation or suppression
Using digital signal processing
Reexamination Certificate
active
07747002
ABSTRACT:
An exemplary embodiment of the present invention is directed toward a method and system for cancelling line echo in the presence of a known secondary audio signal. Filter adaption is enabled in the presence of a known secondary audio source such as the sound of a computer game, a music signal or other secondary audio sources that would otherwise prevent echo cancellation due to an apparent double talk condition. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
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Rabenko Theodore F.
Thi James C. H.
Broadcom Corporation
Jamal Alexander
Sterne Kessler Goldstein & Fox P.L.L.C.
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