[SciPy-user] What's "a sequence"
Robert Kern
robert.kern@gmail....
Wed Apr 11 14:21:40 CDT 2007
Stef Mientki wrote:
> hello,
>
> I'm trying to design a filter by the Remez exchange algorithm,
> but don't know how define "a sequence", like the bands parameter.
>
> From the help:
> remez(numtaps, bands, desired, weight=None, Hz=1, type='bandpass',
> maxiter=25, grid_density=16)
> Calculate the minimax optimal filter using Remez exchange algorithm.
> Inputs:
> numtaps -- The desired number of taps in the filter.
> bands -- A montonic sequence containing the band edges. All elements
> must be non-negative and less than 1/2 the sampling frequency
> as given by Hz.
>
> I tried several options
> i=signal.remez(16, ([0.02,0.06]), ...
> i=signal.remez(16, [0.02,0.06], ...
> i=signal.remez(16, (0.02,0.06), ...
>
> but they all give an error on the bands-parameter.
What error? Please always copy-and-paste the traceback.
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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