🚀 go-pugleaf

One FAQ I often see here is:

Q: Does anybody have knowledge, references, or code for using DSP to
produce the common guitar/music processing effects: parametric EQ,
delay, echo, reverberation, flanger, chorus, pitch shift, compression,
limiting, distortion, expansion/gate, and others I've forgotten?

As for the answer, hopefully someone has collected past responses. 
Delay and echo are easy, there's an article by J.A.Moorer in
"Foundations of Computer Music" (Roads and Strawn, eds) about reverb,
and I recall some Julius Smith articles in ICMC (International Computer
Music Conference) proceedings about using waveguides for flanging and
reverb.  There was a good compressor/limiter article in JAES a year or
two ago, and some Computer Music Journal articles about distortion (a
special case of "waveshaping" as it's referred to in the computer music
literature).  Pitch shifting has been discussed to death here, too.  I
personally would love to have C code for all this stuff.