in making my latest plugin, i’ve come up with this time stretch algorithm that, i think, pretty closely mimics the classic akai s950 (and others) time-stretch. That is, it sounds very metallic and unnatural on purpose .
As a bonus it works in realtime, where current closed source solutions like Akaizer were offline, so you have to bounce the whole file when you make a change, the parameters for this struct are automatable .
It is a fairly short struct with a simple interface: