User manual

Table Of Contents
323
Audio processing and functions
About time stretch and pitch shift algorithms
MPEX
MPEX is an alternative high-quality algorithm. You can choose between the following
quality settings
:
Ö When applying the Pitch Shift process, you can choose between the regular setting
and a setting where the formants are preserved for each quality setting.
Standard
The Standard algorithm is optimized for CPU efficient realtime processing. The
following presets are available:
Option Description
MPEX –
Preview Quality
Use this mode only for preview purposes.
MPEX –
Mix Fast
This mode is a very fast mode for preview. This works best with
composite music signals (mono or stereo material).
MPEX –
Solo Fast
Use this mode for single instruments (monophonic material) and
voice.
MPEX –
Solo Musical
Same as above but higher quality.
MPEX –
Poly Fast
Use this for processing monophonic and polyphonic material. This is
the fastest setting that gives still very good results. You can use this
for drum loops, mixes, chords.
MPEX –
Poly Musical
Use this for processing monophonic and polyphonic material. This is
the recommended MPEX default quality setting. You can use this for
drum loops, mixes, chords.
MPEX –
Poly Complex
This high quality setting is quite CPU-intensive and should be used
only when processing difficult material or for stretch factors above
1.3.
Option Description
Standard –
Drums
This mode is best for percussive sounds, because it does not change
the timing of your audio. Using this option with certain tuned
percussion instruments may lead to audible artifacts. In this case, try
the Mix mode as an alternative.
Standard –
Plucked
Use this mode for audio with transients and a relatively stable spectral
sound character (e.
g. plucked instruments).
Standard –
Pads
Use this mode for pitched audio with slower rhythm and a stable
spectral sound character. This minimizes sound artifacts, but the
rhythmic accuracy is not preserved.
Standard –
Vocals
This mode is suitable for slower signals with transients and a
prominent tonal character (e.
g. vocals).
Standard –
Mix
This mode preserves the rhythm and minimizes the artifacts for
pitched material that does not meet the above criteria (i.
e. with a less
homogenous sound character).
This preset is selected by default for audio that is not categorized.