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Article #10346Re: Re: A question about Nyquist theorm
From: bittel
Date: Wed, 20 Feb 1991 14:00
Date: Wed, 20 Feb 1991 14:00
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1450 bytes
In article <1991Feb17.115102.15399@Neon.Stanford.EDU>, zimmer@calvin.stanford.edu (Andrew Zimmerman) writes: >>> > "The sample frequency must be at least twice the highest frequency >>> >component within the analog signal for an accurate representation of the >>> >analog signal". >> >>I think this should be "GREATER than twice the highest frequency >>component". > > Just to nit-pick, it should be "GREATER then twice the bandwidth of the > signal", not twice the highest frequency. > > Andrew > zimmer@calvin.stanford.edu I had a professor that loved to explain the sampling theory this way. It is not correct!!! What does the bandwidth have to do with it??? Say you have a signal with frequency components from 5000 to 5100 Hz. The bandwidth is 100 Hz.. Does that mean you can sample at 200 samp/sec and get the signal??? NO!! Fs >= 2fmax Enough said. NJIT student who finally passed EE333.
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<91046.095459F0O@psuvm.psu.edu> <Abj8CR200WBN04RPUr@andrew.cmu.edu> <317@sphere.UUCP> <1991Feb17.115102.15399@Neon.Stanford.EDU>Show Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!think.com!hsdndev!rutgers!zodiac!bittel From: bittel@zodiac.rutgers.edu Newsgroups: sci.electronics Subject: Re: Re: A question about Nyquist theorm Message-ID: <605.27c28109@zodiac.rutgers.edu> Date: 20 Feb 91 14:00:40 GMT References: <91046.095459F0O@psuvm.psu.edu> <Abj8CR200WBN04RPUr@andrew.cmu.edu> <317@sphere.UUCP> <1991Feb17.115102.15399@Neon.Stanford.EDU> Organization: Rutgers University - Computing Services Lines: 26