Article View: sci.electronics
Article #10226Re: A question about the Nyquist theorm
From: Tom Bruhns
Date: Mon, 18 Feb 1991 07:16
Date: Mon, 18 Feb 1991 07:16
13 lines
1036 bytes
1036 bytes
terryb.bbs@shark.cs.fau.edu (terry bohning) writes: >zimmer@calvin.stanford.edu (Andrew Zimmerman) writes: >> Just to nit-pick, it should be "GREATER then twice the bandwidth of the >> signal", not twice the highest frequency. >> > >Wow, that's great! So I only need to sample my 10 Hz bandwidth signal >which is centered at 1 MHz at 20 Hz! Just so--except that with exactly 20Hz sampling, you cannot get information on the amplitude of the component at exactly 1MHz, since that is a harmonic of 1/2 the sampling frequency. You would want to adjust your sampling frequency slightly, by a factor of 5/1000000...
Technical Details
Message-ID:
<5170107@hplsla.HP.COM>Path:
arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hplsla!tombReferences:
<91046.095459F0O@psuvm.psu.edu>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!zaphod.mps.ohio-state.edu!sdd.hp.com!hp-pcd!hplsla!tomb From: tomb@hplsla.HP.COM (Tom Bruhns) Newsgroups: sci.electronics Subject: Re: A question about the Nyquist theorm Message-ID: <5170107@hplsla.HP.COM> Date: 18 Feb 91 07:16:30 GMT References: <91046.095459F0O@psuvm.psu.edu> Organization: HP Lake Stevens, WA Lines: 13