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From: Senthil on 1 Aug 2010 13:34
timesignal = sin(1:100);
freqsignal = fft(timesignal);
rectimesignal = real(ifft(freqsignal));
here time signal and rectimesignal are same.....
From: Greg Heath on 1 Aug 2010 13:54
On Aug 1, 1:34 pm, "Senthil " <senthilponku...(a)yahoo.co.in> wrote:
> timesignal  = sin(1:100);
> freqsignal = fft(timesignal);
> rectimesignal = real(ifft(freqsignal));
> here time signal and rectimesignal are same.....

No they aren't:

x = sin(1:100);
X = fft(x);
recx = real(ifft(X));

% In the context of this thread, recx and x
% are NOT the same.....

err = recx-x;
minmaxerr = minmax(err)

>>
minmaxerr =

-5.8287e-016 5.5511e-016

Hope this helps.

Greg
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