Julius Smith's (free online) book is also a good resource here:
https://ccrma.stanford.edu/~jos/filters/

Honestly it can take a few readthroughs (of different books even) for it all to sink in. 

Julius also some discussion on implementing a phaser:
https://ccrma.stanford.edu/~jos/pasp/Virtual_Analog_Example_Phasing.html
and (related, simpler) flanging:
https://ccrma.stanford.edu/~jos/pasp/Flanging.html

spencer



On Thu, May 22, 2014 at 2:16 PM, Rich Caloggero <rjc@mit.edu> wrote:
This might be a better version:
http://www.dspguide.com/


-- Rich


-----Original Message----- From: Stuart McDonald
Sent: Thursday, May 22, 2014 5:55 AM
To: chuck-users@lists.cs.princeton.edu
Subject: [chuck-users] Filters and filter education

I've been periodically fussing over trying to construct a phaser (the
effect, not the fictional weapon) and while there's a working ChucKian
example at http://electro-music.com/forum/viewtopic.php?t=23264 , I'd
like to understand more about what's going on.

The example uses a PoleZero filter, which may as well be called
PixieWand for all I know what it actually does. There are numerous
other filter UGens as well; I think there may be a whole world of
filtration out there I can't even imagine.

The ChucK documentation doesn't provide descriptions of the mechanics
of these filters. I get the impression that they're things you're
expected to understand if you have a formal background in DSP, and if
you don't, well, it's a bit of a leap to get there.

For now I'm optimistic I can get educated in some way. A 2006 post on
this subject on this list
(https://lists.cs.princeton.edu/pipermail/chuck-users/2006-June/000763.html)
suggested reading Real Sound Synthesis for Interactive Applications
(http://www.amazon.com/Real-Sound-Synthesis-Interactive-Applications/dp/1568811683)
by Perry R. Cook.

The book looks promising, but I'm not sure if it tackles the subject
to a depth that would be helpful. Has anyone read it and could
recommend? Perry, what do you reckon? =D

Many thanks,


Stuart
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