Atte André Jensen
atte.jensen at gmail.com
Sat Jul 1 05:38:54 EDT 2006
Adam Tindale wrote:
> There are a few examples of filtering that come with ChucK. The best
> ones are wind.ck and wind2.ck, as well as powerup.ck.
I did have a look, and found that something like this gives a decent
resonant low-pass filter:
triosc tri => ADSR env => TwoPole filter => dac;
sqrosc sqr => env;
1 => filter.norm;
1500 => filter.freq;
Seems that the radius is "filter strength", setting it to 0 and the
filter just passes the signal through. However I still need to be able
to get rid of the resonance. And a high-pass version would be nice too.
Could someone explain that the coefficients mean? (or link to some
material that explains it)...
> To understand what is going on you will have to look at STK and/or
> Perry Cook's book Real Sound Synthesis.
Yeah, that looks like a nice book, might pick it up. I imagine a lot of
future users being just as ignorant as me about filer coefficients and
the like. So may I propose that a couple of simple to use analog style
filters is added to chuck + a bit of explanation about using the current
filters + links (if possible) to background material.
> As for using other oscillators, in the manual there is a tutorial on
> extending basic patches that (I think) covers this topic.
Well as I said I know how to use those. The two pages (24 + 25) of
"Modifying Basic Patches" is not really that deep. Maybe I wasn't being
clear, but I was more hoping for a few classic subtractive examples. You
know like a pad, a moog style bass and a brass sound. With such a few
examples I imagine most users familiar with subtractive synthesis would
be able to more or less take it from there...
> I hope this helps.
peace, love & harmony
http://www.atte.dk | quartet: http://www.anagrammer.dk
http://www.atte.dk/gps | compositions: http://www.atte.dk/compositions
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