Voice switch used in hands-free communications system

Details Voice switch used in hands-free communications system Voice switch used in hands-free communications system

1997-01-02

1999-08-17

Wolinsky, Scott

Telephonic communications

Supervisory or control line signaling

Using line or loop condition detection

379390, 379392, 379420, H04M 100

Patent

active

059404990

ABSTRACT:
A voice switch in a hands-free communications system performs selective attenuation with respect to respective voice signals being transmitted and received in respective transmitting and receiving paths, the transmitted voice signal having been converted from an audible voice by a microphone connected to the transmitting path and the received voice signal having been converted by a loudspeaker to an audible voice output. A detector selectively detects a currently transmitted voice signal at a normal level, a currently received voice signal at a normal level, and drops in the respective levels thereof to nil levels and provides corresponding outputs to a controller. When one of the transmitted and received voice signals is of a normal level and the detector newly detects the other thereof at a normal level, the controller selectively attenuates that other, newly-detected normal level voice signal. Further, when a current voice signal of a normal level drops to a nil level and, within a selected time interval, resumes its normal level and also the other voice signal is newly detected at a normal level, the controller preferentially attenuates the newly detected voice signal such that the resumed normal level voice signal is preferentially processed.

REFERENCES:
patent: 4764954 (1988-08-01), Tsurusaki et al.
patent: 5075687 (1991-12-01), Chen et al.
patent: 5187741 (1993-02-01), Erving et al.
patent: 5357567 (1994-10-01), Barron et al.

Affiliated with

Also associated with

Rating

Voice switch used in hands-free communications system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Voice switch used in hands-free communications system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice switch used in hands-free communications system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-322730