2013

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Resampling/Timestretching
The pitchshifting/timestretching/resampling editor opens. This effect can change the
tempo and pitch of the audio material separately. The effect is also available as a
mouse mode or object effect. The dialog's advanced settings options and the pitch
changing options are missing, however.
Algorithm: Selects the applied timestretching process.
Time factor calculation: All algorithms in this dialog apply a time factor as the input
parameter. The input fields for the group "Time factor calculation" enable convenient
detection of the time factor from the desired new length or a new tempo in BPM in
relation to an old tempo (required beforehand).
Pitch (semitones): For any algorithm except resampling, the pitch can also be set
independent of the tempo. Use the pitch fader beside the factor fader to experiment.
Play/Stop/Play orig.: "Play/Stop" can be used to immediately control the result of the
algorithm. "Play orig." plays the unedited material for comparison.
Algorithms for timestretching/pitchshifting
• Standard: Timestretching and pitchshifting in standard quality. This method is
suitable for audio material without a pronounced beat. Beat markers are
evaluated to improve audio quality.
• Smoothed: Timestretching and pitchshifting for audio material without pulsing
elements. The method is suitable for polyphonic orchestral instruments, pauses,
speech, and singing. Beat markers are not evaluated.
In this case, a considerably more complex algorithm is used which requires more
processing time. The material can also be processed with very large factors (0.2...
50) without causing serious artifacts. The material is "smoothed" to make the
sound softer and emit it at an adjusted phase level. This smoothing is hardly