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Subject: Re: fft amplitude relationship
Date: Wed, 28 May 2008 16:07:01 +0000 (UTC)
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"Bruce " <italianasa84@gmail.com> wrote in message 
<g1juri$c4v$1@fred.mathworks.com>...
> Thanks, what you mentioned was what I was looking for.
> - Bruce

Bruce,

Walter's answer is incomplete.  The DC and Nyquist values 
are unique and therefore do not have a 2 in the scale 
factor.

time(DC)      = frequency(DC) / N
time(Nyquist) = frequency(Nyquist) / N
time(all other points) = frequency(all other points) * 2 / N

Note that there is no Nyquist value for odd N.

Ken