Sound Cancellation Techology

Angelo Campanella acampane at
Mon Jun 19 22:10:20 EST 1995

In article <twdayDABv60.9p8 at> twday at (Tom Day) writes:
>From: twday at (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+-


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