OptionaltempoOptionalpitchPitch scale factor. 1.0 = no change, 2.0 = octave up
OptionaltransientsTransients: crisp, mixed, smooth
OptionaldetectorDetector: compound, percussive, soft
OptionalphasePhase: laminar, independent
OptionalwindowWindow: standard, short, long
OptionalsmoothingSmoothing: off, on
OptionalformantFormant: shifted, preserved
OptionalpitchqPitch quality: high, medium, low, very-low
OptionalengineEngine: faster, finer
Tempo scale factor. 1.0 = no change, 2.0 = double speed