[music-dsp] I found source to a useful program
joshscholar at yahoo.com
Sun Sep 5 07:04:10 EDT 2004
There's a filter design applet at
Those of you who've already seen it might think it's not so useful because
it doesn't factor filters into stages and only prints 4 places of the
decimal - that isn't enough for a high order IIR filter in that form.
However the source code is available online. I found that placing it in the
directory the .sh file expects and using Cygwin, I can alter
FilterCoefficient.java to print more places and recompile.
Also the source looks quite usable. There isn't anything written about a
license, so I should write the professor before using his code...
The code can design:
Five kinds of high pass, low pass and band pass filters (Butterworth,
Bessel, Chebyshev , Elliptic and Kaiser), a simple all pass, a
Parks-McClellan seven band parametric equalizer, a simple band-boost and
some sort of LPC designed filter... You can specify the order of the filter
or in some cases it can pick the order that best matches your requirements.
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