Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Reexamination Certificate
2006-07-05
2011-11-22
Jamal, Alexander (Department: 2614)
Telephonic communications
Substation or terminal circuitry
For loudspeaking terminal
Reexamination Certificate
active
08064591
ABSTRACT:
The invention relates to processing signal for improving a sound pick-up in telephone and/or videophone units. The inventive method consists in comparing (13) a signal transmitted by a unit microphone (Mic) with a threshold low value (THR_LOW) and in amplifying (14,15) said microphone-transmitted signal when it is less than the threshold low value. However, said steps depend on the test (10) carried out on a signal used for feeding the loud speaker (HP), in particular consisting in controlling said last signal (crete_HP) of a background noise order (BDFd) in such a way that the background noise is not amplified by an acoustical coupling between the microphone (Mic) and the loud speaker (HP).
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Auvray Monique
Deleam David
Thomas Jean-Philippe
France Telecom
Jamal Alexander
McKenna Long & Aldridge LLP
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