if you dont want to do this using the nonrealtime
mode (i for example still do not understadn it) you
could just "play" it between 2 buffers.
a third buffer can be used for the "undo" – and now
you can use any of your custom realtime DSPs in an
file editor like program.
Sorry I cant help but if you end up successful please share your
findings. Most solutions available to max utilize an fft giving
limited accuracy due to large windows. With my new found fft
ability, I’m thinking about trying a pfft in non realtime mode.
As much EVIL as digidesign is, they have really great transient
detection in "beat detective".
maybe they got patent for it. patents for the greater good? naw