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Re: A question on fftshift
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From: |
Roberto Hernandez |
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Subject: |
Re: A question on fftshift |
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Date: |
Fri, 19 Jul 2002 16:24:52 -0300 |
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User-agent: |
Mozilla/5.0 (Windows; U; Win98; en-US; rv:1.0.0) Gecko/20020530 |
Steve M. Robbins wrote:
is that the frequency interval for the FFT output is [-fc,fc] where fc
is the critical (Nyquist) frequency.
For an odd number of samples. Otherwise it's [-fc, fc - 1(N*Dt)].
The documentation for fftshift says otherwise, however.
Who is correct?
The documentation is wrong. This was reported, but I guess it hasn't
been fixed. Search the mailing lists for "fftshift help in octave
2.1.35, incorrect?" in April of 2002.
The function works fine, it's only a documentation problem.
Regards,
Roberto
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