Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!accuvax.nwu.edu!nucsrl!telecom-request From: John Higdon Newsgroups: comp.dcom.telecom Subject: Re: Telecom Peeves Message-ID: <9718@accuvax.nwu.edu> Date: 14 Jul 90 19:47:25 GMT Sender: news@accuvax.nwu.edu Reply-To: John Higdon Organization: Green Hills and Cows Lines: 33 Approved: Telecom@eecs.nwu.edu X-Submissions-To: telecom@eecs.nwu.edu X-Administrivia-To: telecom-request@eecs.nwu.edu X-Telecom-Digest: Volume 10, Issue 483, Message 3 of 12 roy@phri.nyu.edu (Roy Smith) writes: > The problem is room noise picked up in the mouthpiece > and heard through my earpiece (is sidetone the right term for that?) > If I cup my hand over the mouthpiece, I can hear fine, but that's a > real drag. I think what I want is a push-to-talk handset, but havn't > been able to fine any. Any suggestions? Push-to-talk is a common way of dealing with this, but there is another known as the "confidencer". It is a special network that eliminates sidetone so that noise entering through the mouthpiece won't be heard in the earpiece. Yet another method is to obtain a "noise cancelling" mouthpiece. These are relatively easy to find to fit the standard (pre "K" style) handsets. > Do double-hearing people > find that noise in the non-phone ear is a real problem, or does the > brain automatically just filter it out? The brain filters it out. It is very amusing to watch people in a noisy location jamming a finger in the opposite ear. That technique does little good when the real problem is noise entering through the mouthpiece. At one of my transmitter sites, there is a standard phone that I have been too lazy to modify. When making calls in the noisy room, covering my other ear has virtually no effect on intelligibility, but cupping my hand over the mouthpiece makes all the difference in the world. John Higdon | P. O. Box 7648 | +1 408 723 1395 john@bovine.ati.com | San Jose, CA 95150 | M o o !