Path: utzoo!attcan!uunet!husc6!cs.utexas.edu!milano!macondo!simon From: simon@macondo.sw.mcc.com (Simon John Gibbs) Newsgroups: comp.sys.next Subject: Re: Fwd: LSC problem Message-ID: <1608@macondo.sw.mcc.com> Date: 18 Nov 88 21:47:01 GMT References: <6843@batcomputer.tn.cornell.edu> Organization: MCC, Austin, TX Lines: 21 In article <6843@batcomputer.tn.cornell.edu>, sandell@batcomputer.tn.cornell.edu (Gregory Sandell) writes: : In article wb1j+@andrew.cmu.edu (William M. Bumgarner) writes: : >---- : >From: fry%zariski@harvard.harvard.edu (David Fry) : > : >I was wondering if anyone has thought of using the NeXT : >computer for an anti-noise demonstration. I think it would be : >a nice little trick... : : Well, since you're a mathematician you may have an idea of how complicated : a task this is. Most people in DSP work I have talked to about this : idea says, "yeah, sure...show me it happening." ... This is not a new idea, and it is possible when the noise source is sufficiently predicatable. There's a company named Noise Cancellation Technology Inc. who've been active in this area for a few years (they were mentioned in Omni about a year ago). I believe they have a product for factory environments and are working in a car muffler. Simon Gibbs (simon@mcc.COM)