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Article #14725

Re: How to build a noise reducer?

#14725
From: Michael Covington
Date: Wed, 18 Nov 1992 16:13
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In article <zhenya.722059559@ultima> zhenya@socs.uts.edu.au ( The Firefox.) writes:
>Does anyone have any ideas about the best way to build a device that takes
>an input from an external microphone, shifts the signal 180 degrees out
>of phase, and then re-emits it with little loss of resolution of the
>waveform in the process?

To shift a sine wave 180 degrees = to turn it upside down.

Why not just reverse the leads on the speaker?




-- 
:-  Michael A. Covington     internet mcovingt@uga.cc.uga.edu 
:-  Artificial Intelligence Programs       phone 706 542-0358
:-  The University of Georgia                fax 706 542-0349
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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!emory!athena.cs.uga.edu!aisun3.ai.uga.edu!mcovingt
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Path: arc1-ca.pugleaf.net!sparky!uunet!ogicse!emory!athena.cs.uga.edu!aisun3.ai.uga.edu!mcovingt
From: mcovingt@aisun3.ai.uga.edu (Michael Covington)
Newsgroups: sci.electronics
Subject: Re: How to build a noise reducer?
Message-ID: <1992Nov18.161332.532@athena.cs.uga.edu>
Date: 18 Nov 92 16:13:32 GMT
Article-I.D.: athena.1992Nov18.161332.532
References: <zhenya.722059559@ultima>
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Organization: AI Programs, University of Georgia, Athens
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