Automatic electronic audio signal attenuating device and method

Details Automatic electronic audio signal attenuating device and method Automatic electronic audio signal attenuating device and method

1993-04-30

1994-09-20

Dwyer, James L.

Telephonic communications

Supervisory or control line signaling

Signal reception at substation

379 90, 379 98, 379 87, 379101, 379105, 379441, 381 77, 381205, H04M 100

Patent

active

053496396

ABSTRACT:
A combined audio system and automatic electronic audio signal attenuating device is disclosed which provides an audio system combined with an automatic electronic audio signal attenuating device comprising an audio attenuation portion for attenuating audio signals and a plurality of network interface portions for controlling the audio attenuation portion in response to changes in telephone system inputs to the network interfaces. In addition, the audio attenuation portion is provided with at least two separate audio input/output connections to provide a plurality of configurations of the attenuating portion to yield different degrees of audio signal attenuation. The combined audio system and automatic electronic audio signal attenuating device can accommodate plurality of telephones in addition to a plurality of audio signal channels.

REFERENCES:
patent: 4425477 (1984-01-01), Magil
patent: 5021747 (1991-06-01), Isham et al.

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