Patent ID: 6295364
Filing Date: 2001-09-25
Classification: G10L,H04M

Abstract:
A simplex digital voice enhancement communication system comprising in combination:a first acoustic zone;a second acoustic zone;a first microphone in said first zone;a first loudspeaker in said first zone, said first loudspeaker being acoustically coupled to said first microphone;a second microphone in said second zone;a second loudspeaker in said second zone, said second loudspeaker being acoustically coupled to said second microphone;a voice sensitive gated switch having a first mode supplying the output of said first microphone over a first channel to said second loudspeaker, and having a second mode supplying the output of said second microphone over a second channel to said first loudspeaker;a first noise sensitive bandpass filter in said first channel;a first equalization filter in said first channel;a second noise sensitive bandpass filter in said second channel;a second noise sensitive bandpass filter in said second channel;a second equalization filter in said second channel;wherein:said first microphone is acoustically coupled to said second loudspeaker;said second microphone is acoustically coupled to said first loudspeaker;said voice sensitive gated switch comprises two voice activity detector gates, a first gate detecting the output of said first microphone, and a second gate detecting the output of said second microphone.