I am experiencing problems with the remez command in Octave 3.2.4 on
Windows. I have tried a number of different orders and griddensities,
but all seem to give error. I am trying to define a differentiator.
Example: B=remez(4,[0 0.8],[0 0.8]*pi,'differentiator',4*1024) gives me
coefficients
-0.02488 0.35098 -1.00103 0.00000 ... (neg. symmetry)
MATLAB's firpm, which I understand should give the same (similar)
output, gives
B= 0.1519 -0.4161 0.9424 0
The MATLAB result is a really decent differentiator, which cannot be
said about the remez output.
Could anyone hint me at a solution? Have I misunderstood anything about
the remez function?
Anders
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