filters
We finished the "auto-feedback" patch (included in the
week2
class patches), and then discussed filters. We created an 'auto-wah'
filter (moving bandpass filter) in Max/MSP, and then showed how to
implement a simple filter Synth in SuperCollider.
I'm also including an RTcmix filter example, although we didn't have
time to cover it (next week!).
Links
- Sound on Sound article
-- SoS is a pretty good 'industry' site. They differentiate between
"EQ" and "filters", which are really the same thing. Click on the link
in the second paragraph about EQ for more information).
- Cycling '74 Filter Tutorial
-- this is the Max/MSP tutorial about filters. Some good info in general,
though.
- Julius O. Smith's Filter Page
-- excellent explanation of the math behind the filters, from the master
at Stanford. Only if you want to get really involved in understanding
filter theory.
- Miller Puckette's Filter Page
-- part of a larger book Miller has done about digitial audio. Excellent
intro to both the theory and practicalities of filter use. And hey,
you could go ask Miller directly about things you don't understand!
- Luke's filter page
-- a very early web-site that Luke did when he was a TA for this class
back in 2002. It goes through the basic theoretical aspects of digital
filters like I did in class.
Class Downloads
- week3-patches.zip
-- filter patches (Max/MSP, RTcmix ([rtcmix~]) and SC3). The
"week3-sc3code.scd" file is the SC3 document. Double-click on
it and it should start SuperCollider. All of the class code
I typed is in that document.