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Table Of Contents
500 EFFECTS MENU
Tip: To change the sample rate of an audio file, e.g. from 48 kHz to 44.1 kHz, please use
the function "Effects -> Sample manipulation -> Adjust sample rate (view page 545)".
Resampling
Samplers and PCM synthesizers transpose samples using this procedure. Time factor and
pitch are dependent upon each other: the shorter the audio material, the higher the pitch
and vice versa. The effect is comparable with changing the playing speed of record players
or tape recorders.
The effect is relatively loss-free, the sound loss is smaller than with all
Timestretching/Pitchshifting procedures. If a pitch change is wanted or justified by
changing the speed, use this algorithm.
Pitchshifting/Timestretching
With all other algorithms, the time factor and pitch are independently adjustable. These
algorithms may create artifacts, which can be balanced out using the anti-aliasing filter. The
preset timestretching/pitchshifting algorithm can be saved via Timestretch / Pitchshift
Patcher (view page 621) ("Tools" menu).
Standard
Here, an algorithm is used that usually delivers very good results with factors from 0.9 to
1.1, that works in phase-locked mode, and thereby keeps the room effect of stereo
signals. This algorithm is only partially suitable for drum loops or other "beat heavy" audio
material as it can change the groove.
Time compression (sample length is reduced) is more successful with this algorithm than
timestretching, i.e. it is better to reduce the longer sample than vice versa.
This algorithm is especially suited to complex audio material. The CPU load is light.
At extreme settings, anti-aliasing effects may occur. An additional anti-aliasing filter can
come to your aid. This filter is also available for all other algorithms that work internally with
resampling.
Beat marker stretching (smoothed)
Beat marker stretching (smoothed) represents the standard methods for high quality
timestretching and pitchshifting. This algorithm works basically the same way as "beat
marker stretching". Here, the stretched material is synchronized with the beat markers in
such a way that the groove remains perfectly intact. Additionally, the smoothed algorithm is
used in between the beat markers. With percussive audio material, good audio quality is
possible even at very large time factors. The CPU power usage is correspondingly high
here.
Smoothed
This deals with a complex algorithm that requires higher processing time. The audio
material can now also be used on very large factors (0.5 – 2.0) without bringing about
strong artifacts. The audio material is "smoothed", which makes the sound softer and emits
it at an adjusted phase level. This smoothing is hardly audible, for example, with speech,
singing, or solo instrumentation. Problems in the shape of distortions may arise with more