Re: [OT] How to produce IIR filter coefficients from a set ofpoints describing the frequency response

> Thanks for the ideas. I've been playing with sage all afternoon and
> it's great. I'd heard about it, but had not dared install it...
> But on the topic of iir filter coeficients, I haven't been able to
> find how... with scipy.signal, there are two functions for creating
> filters: iirfiter and iirdesign, but they are not designed for
> arbitrary filter responses, since they model classic bp, hp, lp and br
> filters. I've found remez, but it's for fir filters.
> Am I missing something?
>
> Cheers,
> Andrés
>
>
> On Fri, May 15, 2009 at 5:14 PM, Jim Bates <jabates@...> wrote:
>> From: victor <Victor.Lazzarini@...>
>> This absolutely impressive, but scary!
>>
>> True.  Running on OSX 10.4, 1.67 Ghz and 2 GB RAM, Sage will compute pi
>> to 100,000 places in just under 9 seconds.  It uses Cython which is a C
>> extension
>> for Python.  It is quite fast.  ( http://cython.org/  )
>> All the Best,
>> Jim
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>
>
>
> --
>
>
> Andrés
>