MathGroup Archive 2010

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Butterworth filter

  • To: mathgroup at smc.vnet.net
  • Subject: [mg108425] Re: Butterworth filter
  • From: Luigi B <l.balzano at gmail.com>
  • Date: Wed, 17 Mar 2010 04:40:16 -0500 (EST)
  • References: <hnkfa8$po0$1@smc.vnet.net> <hnl0ln$6uq$1@smc.vnet.net>

On Mar 15, 11:03 am, "Nasser M. Abbasi" <n... at 12000.org> wrote:
> "Luigi B" <l.balz... at gmail.com> wrote in message
>
> news:hnkfa8$po0$1 at smc.vnet.net...
>
> > Dear All,
> > I have a table {{x,y}} of measured data with significant noise.
> > I am not into signal processing and I would like to filter this table
> > with a Butterworth type of filter.
> > Does anyone have a suitable routine?  (That would allow changin the
> > order of the filter as well, like the function 'butter' in another
> > system).
>
> > Thanks, Luigi
>
> This is not much help to you now, but there used to be a Mathematica add-on
> application called signals and systems which had this and more filters:
>
> http://documents.wolfram.com/applications/signals/FilterAnalysisandDe...
>
> Too bad this application is no longer available.
>
> I have version 1.0 bought few years ago, which no longer works on version 7
> of Mathematica (I get many error messages when I load it).
>
> If you google more may be you'll find something. When all else fails, it
> might be a good exercises to write one yourself.
>
> --Nasser

Dear Nasser
 thank you for your message. However, it does not solve my problem.

L


  • Prev by Date: Re: fitting parameters to a differential equation
  • Next by Date: Re: fitting parameters to a differential equation
  • Previous by thread: Re: Butterworth filter
  • Next by thread: Re: Butterworth filter