Complex Mode; Complex Pro Mode; Rex Mode - Ableton Live Reference Manual

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CHAPTER 9. TEMPO CONTROL AND WARPING

9.3.5 Complex Mode

Complex Mode is a warping method speci cally designed to accommodate composite
signals that combine the characteristics covered by other Warp Modes; it works well for
warping entire songs, which usually contain beats, tones and textures.
Complex Mode is a rather CPU-intensive function, using approximately ten times the CPU
resources required by the other Warp Modes. As such, you may want to freeze tracks where
Complex Mode is used or record the results as a new clip to use as a substitute.

9.3.6 Complex Pro Mode

Complex Pro Mode uses a variation of the algorithm found in Complex mode, and may offer
even better results (although with an increase in CPU usage.) Like Complex Mode, Complex
Pro works especially well with polyphonic textures or whole songs.
The Formants slider adjusts the extent to which the formants of the sample are compensated
when transposing. At 100%, the original formants will be preserved, which allows for large
changes in transposition while maintaining the sample's original tonal quality. Note that this
slider has no effect if the sample is played back untransposed.
The Envelope slider also in uences the spectral characteristics of the material. The default
setting of 128 should work well for most audio. For very high-pitched samples, you may
have better results with lower Envelope values. Likewise, low-pitched material may sound
better with higher values.

9.3.7 REX Mode

REX Mode differs from the other Warp modes in several ways. Most notably, it is not available
as an option in the Clip View's Sample Box, but is instead enabled automatically when
loading a le in REX format. REX les, associated with the program ReCycle by Propellerhead
Software, contain embedded tempo and timing information and will synchronize to your Set's
tempo just like any other audio le.