I am currently dissecting a very nice spectral delay external --
https://guitarextended.wordpress.com/2012/02/07/spectral-delay-effect-for-guitar-with-pure-data/ -- and I would like to know if any PD veterans here can point me to a transparent and comprehenisve tutorial on using abstractions in PD, and parsing Array data in a polyphonic context.
I am asking because I am a little unclear about how/when an abstraction becomes 'polyphonic' in PD. I can pass single data streams to a lower level abstraction, yet I cannot see how PD 'knows' if a given abstraction is polyphonic, requiring a $0 prefix, parsing etc.
(Coming from Max, I expect to declare voice-numbers, voice-targets, pack/unpack etc)
Pointers very much welcomed friends (PD-vanilla, with cyclone and zexy libraries)
ps, I have been here -- http://www.pd-tutorial.com/english/ch03s08.html -- as part of my studies, but it lacks a transparent discussion on polyphony, voice-targeting and Array data parsing