Here's another cleanup of something I made for a recent performance. Like martha~, it's a Pd-vanilla abstraction, so ready to use on any platform. The idea is to make multiple time-stretched/transposed copies of the live input that trail behind as a kind of detuned halo (or with the right settings, a dense and disgusting mush). A simplified version of the I07.phase.vocoder.pd doc patch is at its core, so this is mainly about taking care of all the buffering, polyphony, and auto-spawning of streams.
http://williambrent.conflations.com/pages/research.html#streamStretch