Re: A question about the Nyquist theorm

Article View: sci.electronics

Article #10224

#10224

From: Kevin William Ryan
Date: Mon, 18 Feb 1991 19:52

15 lines
1036 bytes

    Mea culpa. The requirement that you must sample _above_ 2w is
correct: sampling _at_ twice the highest frequency produces indefinite
results, as phase and therefore magnitude information is lost. Thus the
proper definition is:

        max freq signal < 1/2 sampling rate

in order to preserve information. 

    It's been too damn long since that signals course... :-)

                                                    kwr

Internet: kr0u+@andrew.cmu.edu

Technical Details

Message-ID: <wbk323K00WBNM2ys43@andrew.cmu.edu>

Path:

arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!wuarchive!udel!rochester!pt.cs.cmu.edu!o.gp.cs.cmu.edu!andrew.cmu.edu!kr0u+

References: <1751@manta.NOSC.MIL> <D04gX2w163w@shark.cs.fau.edu>, <319@sphere.UUCP>

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!wuarchive!udel!rochester!pt.cs.cmu.edu!o.gp.cs.cmu.edu!andrew.cmu.edu!kr0u+
From: kr0u+@andrew.cmu.edu (Kevin William Ryan)
Newsgroups: sci.electronics,sci.physics
Subject: Re: A question about the Nyquist theorm
Message-ID: <wbk323K00WBNM2ys43@andrew.cmu.edu>
Date: 18 Feb 91 19:52:35 GMT
References: <1751@manta.NOSC.MIL> <D04gX2w163w@shark.cs.fau.edu>,
 <319@sphere.UUCP>
Organization: Biology, Carnegie Mellon, Pittsburgh, PA
Lines: 15
In-Reply-To: <319@sphere.UUCP>

Reply to Parent Message