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Dear Tomasz,
Thank you very much for valuable reference.
Best Regards
Dimitris Tsokakis
--- In amibroker@xxxx, "Tomasz Janeczko" <amibroker@xxxx> wrote:
> Hello,
>
> I introduced 2nd order IIR filtering because it is wide known
> filter in acoustics and generally electronics.
>
> The 2nd order filter has less lag and better noise suppression.
>
> As EMA is essential 1st order IIR filter it has worse
characteristics
> than 2nd and higher order filters.
>
> The coefficients can be derived using standard methods
> used in acoustics. See the following references:
> http://www.mesasoftware.com/pub/SMOOTHINGFILTERS.EXE
> SMOOTHING FILTERS . . . . . . . . .Synopsis
>
> Use of smoothing filters is a tradeoff between degree of smoothing
and acceptable lag. This paper discusses the difference between
> FIR (Finite Impulse Response) and IIR (Infinite Impulse Response)
filters. Equations for higher order filters is provided, as well
> as a definitive discussion of lag calculation.
>
> also:
> http://monkey.icu.ac.kr/sslab/rr/HICSS2000/DATA/DTISA04.PDF
>
> and acoustic related ones:
>
> http://svr-www.eng.cam.ac.uk/~ajr/SA95/node13.html
>
http://www.mathworks.com/access/helpdesk/help/techdoc/ref/filter.shtml
> http://www.onu.edu/user/FS/lthede/adfd_txt.htm
> http://www.gresilog.com/english/excommen/doc/fil_rec.htm
>
>
> Best regards,
> Tomasz Janeczko
> ===============
> AmiBroker - the comprehensive share manager.
> http://www.amibroker.com
>
> ----- Original Message -----
> From: "DIMITRIS TSOKAKIS" <TSOKAKIS@xxxx>
> To: <amibroker@xxxx>
> Sent: Saturday, November 03, 2001 5:15 PM
> Subject: [amibroker] Re: Newsletter 13/2001 available
>
>
> > Dear Tomasz,
> > Thank you for interesting techniques of Issue 13/2001.
> > Two preliminary questions, not on the technique but on
> > the subject itself:
> > A. In
> > f0 = 0.2;
> > f1 = 1.2;
> > f2 = -0.4;
> > do you follow some formula or relation between f s ?
> > I noticed that slight changes form -0.4 to -0.5 have quite
> > different response.
> > B. In what sense do you find this ema "better".?
> > I did not see that.
> > If the example was just to show the technique, it is O. K.
> > Best Regards
> > Dimitris Tsokakis
> > --- In amibroker@xxxx, "Tomasz Janeczko" <amibroker@xxxx> wrote:
> > > Hello,
> > >
> > > The newsletter issue 13/2001 is available at:
> > > http://www.amibroker.com/newsletter/13-2001.html
> > >
> > > Enjoy.
> > >
> > > Best regards,
> > > Tomasz Janeczko
> > > ===============
> > > AmiBroker - the comprehensive share manager.
> > > http://www.amibroker.com
> >
> >
> >
> >
> >
> > Your use of Yahoo! Groups is subject to
http://docs.yahoo.com/info/terms/
> >
> >
> >
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