Noise-cancelling handset

Details Noise-cancelling handset Noise-cancelling handset

H - Electricity

04

M

H04M 1/19 (2006.01)

Patent

CA 2090681

A noise-cancelling telephone handset comprises a housing defining an earpiece (2) and a mouthpiece (3) housing a first order pressure gradient microphone (m). The housing is pro- vided with two pressure-sensing locations (h1 and h2) in the region of the mouthpiece (3), these locations being connected to the microphone (m) by ducts (5). The pressure-sensing locations (h1 and h2) are spaced apart by a predetermined distance which is sufficiently large to permit locally-generated speech signals to produce a pressure gradient between the pressure-sensing locations whilst sound signals from distant sources produce substantially equal pressures at the pressure-sensing locations, whereby, in use, the output from the mouthpiece is substantially entirely that resulting from the locally-generated speech sig- nals.

Affiliated with

Also associated with

Rating

Noise-cancelling handset does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Noise-cancelling handset, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise-cancelling handset will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1981142