Noise masking communications apparatus

Electrical audio signal processing systems and devices – Including amplitude or volume control

Reexamination Certificate

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Details

C379S430000, C381S122000

Reexamination Certificate

active

09990097

ABSTRACT:
A communications headset with a movable microphone boom that extends to different distances from the mouth, where the movement of the boom operates electrical, mechanical or acoustic means to adjust the transmit and/or receive sensitivity of the headset.

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patent: 2002/0098877 (2002-07-01), Glezerman
patent: 2003/0003969 (2003-01-01), Tong et al.
patent: 11308314 (1999-05-01), None

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