Subject: Re: 'pressure at the ears' visiting an anechoic chamber From: Malcolm Slaney <malcolm(at)INTERVAL.COM> Date: Fri, 23 Oct 1998 10:34:23 -0700 X-Web-Page:http://www.interval.com/~malcolm/pubs.html>> When visitors enter -for the first time- our (rather large) anechoic >> chamber, they are always complaining about the strange 'pressure at >> their ears'. Similar as listening to 'much out of phase' signals in >... > I'm pretty sure that the ear-popping is due to the pressure change as the door is pulled shut. The anechoic chambers I have been in have a door jamb much like a tunnel. You pull the door shut and the pressure in the room increases. I suspect our ears have very little experience with such pressure changes in normal life. - Malcolm McGill is running a new version of LISTSERV (1.8d on Windows NT). Information is available on the WEB at http://www.mcgill.ca/cc/listserv