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Thu, 16 Apr 2009 05:13:54 -0700 (PDT)
Hi everybody, I trying to shift (circular) a real signal by delta, so I do :
a = [1:10] %as a test
b = ifft( fft(a) .* exp(-2*i*pi*[0:9]*delta/10))
so, yeah, that's cool. but I'd like to use a non-integer delta, like 0.2.
But of course I'll end up with b being an array with imaginary number.
I could interpolate to get more samples and only pick the on I need, but
it's unpractical for values like 0.3452.
would someone please have an idea?
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- FFT time-shift/interpolation,