Article View: sci.electronics
Article #10230Re: A question about the Nyquist theorm
From: Rob Fugina
Date: Mon, 18 Feb 1991 21:29
Date: Mon, 18 Feb 1991 21:29
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In article <1759@manta.NOSC.MIL> north@manta.NOSC.MIL (Mark H. North) writes: >Sorry to answer my own post but I take that last paragraph back. I think >you are wrong after all. Look at it this way -- suppose I tell you I'm >going to send you one of two signals, either 1 volt 60 Hz or a DC voltage >between -1 and 1 volt. You may sample at 120 Hz. You get all identical >samples at 0.5 volts. Which signal did I send? >Mark You sent a DC signal of 0.5 volts. If it were AC, you the samples would be alternating positive and negative of the same magnitude. Rob robf@cs.umr.edu
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!uakari.primate.wisc.edu!umriscc!mcs213f.cs.umr.edu!robf From: robf@mcs213f.cs.umr.edu (Rob Fugina) Newsgroups: sci.electronics,sci.physics Subject: Re: A question about the Nyquist theorm Message-ID: <2189@umriscc.isc.umr.edu> Date: 18 Feb 91 21:29:39 GMT References: <D04gX2w163w@shark.cs.fau.edu> <1758@manta.NOSC.MIL> <1759@manta.NOSC.MIL> Sender: news@umriscc.isc.umr.edu Followup-To: sci.electronics Organization: University of Missouri - Rolla Lines: 12