Enhanced call reception and privacy

Details Enhanced call reception and privacy Enhanced call reception and privacy

2011-08-09

2011-08-09

Pham, Tuan A (Department: 2618)

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

C455S063100, C455S114200, C455S222000, C455S278100, C381S071100, C381S094100, C379S406010, C379S406050

Reexamination Certificate

active

07996048

ABSTRACT:
An audio interface adapted to reduce a subscriber voice may receive a subscriber voice and a background noise. The subscriber voice may then be compared to the to the background noise. If the received subscriber voice is louder than the received background noise, the audio interface may output a message to the cellular telephone subscriber indicating the subscriber may reduce his speaking volume. Additionally, an audio interface may process a voice waveform that corresponds to the subscriber voice and a background waveform that corresponds to the background noise to generate a substantially opposite voice waveform and a substantially opposite background waveform respectively. The substantially opposite voice waveform and background waveform may be substantially out of phase from the voice waveform and background waveform respectively and output via one or more output ports of the audio interface.

REFERENCES:
patent: 2003/0003944 (2003-01-01), Rosenzweig
patent: 2008/0118081 (2008-05-01), Chang

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