12.0

Grain Size
Allows you to determine the size of the grains into which the standard time-stretching
algorithm splits the audio. Low grain size values lead to good results for material that
has many transients.
Overlap
This is the percentage of the whole grain that will overlap with other grains. Use higher
values for material with a stable sound character.
Variance
This is the percentage of the whole length of the grains, and it sets a variation in
positioning, so that the overlapping area sounds smooth. A variance setting of 0
produces a sound akin to the time stretching used in early samplers, whereas higher
settings produce more rhythmic smearing effects but fewer audio artifacts.
Limitations
Applying time stretching to audio material can lead to a degradation in audio quality and to
audible artifacts. The result depends on the source material, the particular stretch operations
applied, and the selected audio algorithm preset.
As a rule of thumb, smaller changes in duration cause less degradation. However, there are
additional issues one should be aware of when working with time stretching algorithms.
NOTE
In rare cases, editing warped audio events may cause discontinuities at the edit points. You can
then try to move the edit point to a different position or bounce the audio event prior to editing.
Reverse Playback and Scrubbing
Most of the algorithms used for time stretching only support forward playback. Reverse playback
or scrubbing of warped audio events can lead to recurring artifacts in playback.
Stretch Factor
Some algorithms may put limitations on the maximum degree of time stretching supported.
Time Stretch Algorithms
Limitations
339
Cubase AI 12.0.20