Telephonic communications – Substation or terminal circuitry – For loudspeaking terminal
Patent
1992-08-14
1994-10-18
Dwyer, James L.
Telephonic communications
Substation or terminal circuitry
For loudspeaking terminal
379389, 379406, 379407, 379409, H04M 100
Patent
active
053575679
ABSTRACT:
An apparatus comprises a first and a second input and a processor coupled to the inputs. The processor estimates peak and minimum levels of each of the first and second input signals. A first signal regulator is coupled to the first input and to a first output for delivering a first output signal from the first signals. A second signal regulator is coupled to the second input and to a second output for delivering a second output signal from the second audio signals. A gain adjustment device is coupled to the processor and the first and second signal regulators. The gain adjustment device provides control signals to the first and second signal regulators to adjust an output signal level of the first output signal in response to minimum and peak levels of the first and second input signals. The output signal level is continuously variable over a range.
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A publication entitled "General Purpose Voice Coding Module", published by Motorola GEG, Scottsdale, AZ, Apr., 1991.
Barron David L.
Stephens James A.
Yip William C.
Dwyer James L.
Fliegel Frederick M.
Motorola Inc.
Saint-Surin J. M.
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