Re: Need to calculate Nyquist frequency from data
- To: mathgroup at smc.vnet.net
- Subject: [mg41255] Re: Need to calculate Nyquist frequency from data
- From: "Urijah Kaplan" <uak at sas.upenn.edu>
- Date: Sat, 10 May 2003 04:03:05 -0400 (EDT)
- Organization: University of Pennsylvania
- References: <b9fk70$9u1$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
The Nyquist frequency is simply half of the sampling rate. So if your time
series represent samples taken 1000 times per second (evenly spaced), the
highest possible non-aliased frequency component will be at 500 times per
second (i.e. 500 Hertz.)
--Urijah Kaplan
"Bob Buchanan" <Bob.Buchanan at millersville.edu> wrote in message
news:b9fk70$9u1$1 at smc.vnet.net...
> Hello,
>
> I have a time series of real numbers which I can treat as representing
> a signal. How do I estimate the Nyquist frequency from the time
> series? If the previous question does not make sense, is it the case
> that the Nyquist frequency can only be estimated if one has a
> continuous function of time to work with?
>
> Thanks,
> Bob Buchanan
>
>