H - Electricity – 04 – M
Patent
H - Electricity
04
M
179/2, 379/82
H04M 1/60 (2006.01)
Patent
CA 1190683
ABSTRACT VOICE COMMUNICATION INSTRUMENT SYSTEM WITH LINE-POWERED RECEIVER CONDITIONING CIRCUIT A voice communication instrument system for two-way voice communication is disclosed. The system includes a voice communication instrument having a microphone and a receiver transducer, and a transmit-receiver circuit system comprising a transmit conditioning circuit and a receiver conditioning circuit. The transmit conditioning circuit provides amplification and frequency response correction of microphone electrical voice signals. The receiver conditioning circuit provides compression, ampli- fication, and, if desired, frequency response correction to an incoming electrical voice signal prior to introduc- tion to the receiver transducer. The receiver condition- ing circuit is powered from the transmit circuit D.C. output voltage, at low voltage and low current. The receiver conditioning circuit has a transformerless input circuit, and further includes bias current control to the various circuit stages to eliminate the effects of supply voltage fluctuations.
408923
Plantronics Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
Voice communication instrument system with line- powered... 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 communication instrument system with line- powered..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Voice communication instrument system with line- powered... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1268606