Ableton/Live/UG/31 Instrument Reference/07 Impulse/02 Start Transpose and Stretch
- Start — offset into the sample, up to 100 ms.
- Transp — ±48 semitones, modulated by velocity or random.
- Stretch — -100% to 100%; negative shortens, positive lengthens. Mode A suits low sounds like toms and bass; Mode B suits high ones like cymbals. Modulated by velocity.