Pitch/Time for ChucK

ChucK has a PitShift Unit Generator, but
it's sort of wonky in many cases.  The
problems of real-time pitch shifting and
non-real-time time-shifting are highly 
related.  Adding real-time time shifting
brings up philosophical issues, but well
worth thinking about.  

One idea is:

SndBuf s => TimeShif t => dac;
1.5 => s.rate;
1.5 => t.time;

This might cause the sndbuf to play at 1.5 pitch 
and speed, but the time shifter would slow it
back down so only the pitch is shifted.  TimeShif
would have to allocate memory or do something clever.

Ooo, I think I got it!

Internally it only draws samples from the sndbuf at 
1.0/1.5 samples per sample but it puts them out at
regular rate.  This would accomplish the goals.
Give it some parameters like overlap/hop/random/etc.
and it could be a really useful UG.

Talk to Dan Trueman and Ray W. about what
make the most sense as a UG to plug into
outputs from LiSA, or SndBuf, or whatever.

Forge Ahead!!