Signalsmith Stretch Examples Pitch-shift Moderate semitones input original +2 -2 +4 -4 {source} play play play play play Extreme semitones input original +8 -8 +16 -16 {source} play play play play play Time-stretch Moderate duration input original 80% 120% 150% {source} play play play play Extreme duration input original 200% 400% {source} play play play