In article <twdayDABv60.9p8 at netcom.com> twday at netcom.com (Tom Day) writes:
>From: twday at netcom.com (Tom Day)
>Subject: Re: Sound Cancellation Techology
>Date: Sat, 17 Jun 1995 17:27:36 GMT
>Peter Wray (ac191 at FreeNet.Carleton.CA) wrote:
>: I have heard that there is some technology available that measures an
>: incoming sound and emits an equal and opposit sound. this is intended to
>: cancel each other out.
>Bose designed a cancelation system for the high efficiency round-the-
>world prop plane (I've forgotten the name of the project). That system
>worked incredibly well, especially considering that the plane had
>absolutely no exhaust muffling system.
Noise Cancelling Headsets these are common in the aviation inductry these
days. Cost is $300-600+-
Ang.
/\/\/\/\/\/\/\ Sound Technology /\/\/\/\/\/\/\/\/
