Telecommunications terminal for noisy environments

Details Telecommunications terminal for noisy environments Telecommunications terminal for noisy environments

1997-06-30

1999-06-29

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455403, 379392, H04M 300, H04M 700

Patent

active

059181850

ABSTRACT:
A wireless terminal is disclosed comprising a first electro-acoustic transducer for converting a first acoustic signal to an uplink signal; a wireless transmitter capable of transmitting the uplink signal to a base station; a wireless receiver capable of receiving a downlink signal from the base station; a terminal processor for conditionally adding a portion of the uplink signal to the downlink signal while a first parameter is set and not adding the portion of the uplink signal to the downlink signal while the first parameter is reset; and a second electro-acoustic transducer for converting the downlink signal to a second acoustic signal. Another embodiment is disclosed that reduces the sidetone level of the terminal based on the power level of the envelope of the acoustic signal input at the microphone.

REFERENCES:
patent: 4558178 (1985-12-01), Yasuda et al.
patent: 5220685 (1993-06-01), Bradt et al.
patent: 5835851 (1998-11-01), Rasmussan et al.
patent: 5852769 (1998-12-01), Ahmed et al.

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