User guide

536 Chapter 21 Editing Audio in the Sample Editor
Time and Pitch Machine Algorithms
The Algorithm menu allows you to choose the algorithm that is best suited to the
audio material you want to process. Your choices are:
 Version 5: This algorithm was inherited from Logic 5. It can be used on most types of
audio material, and has a particular color, which may be useful as a creative option.
 Any Material: This is the most universal algorithm. It is able to handle most material.
 Monophonic: A specialized algorithm for monophonic material—an individual voice,
brass, or woodwind instrument, for example.
 Pads: Use this algorithm on polyphonic material with harmonic content—choirs or
string sections are good examples.
 Rhythmic Material: Use this algorithm on rhythmic material—can be drums and
percussion, but less obviously; rhythm guitar, clavinet, and piano comp parts.
 Beats Only: This algorithm perfectly maintains the timing of percussive material. It
should be your first choice for all kinds of dry drum loops.
 Universal: This high-quality algorithm is able to handle any kind of audio material,
and is generally recommended for most time stretching tasks. The following two
algorithms can, however, deliver better results in cases where the audio material
exactly matches the outlined specifications.
 Complex: Choose this algorithm to obtain natural sounding results when time
stretching complex musical material—orchestral music or final mixes.
 Percussive: The Percussive algorithm perfectly maintains the timing of rhythmic
material, making it a good choice for drum loops and percussive, non-harmonic
signals. In comparison to the Beats Only algorithm, the Percussive algorithm is better
suited for percussive material that has been processed through a reverb (or contains
a long tail). This may also apply to percussive playing styles, such as a staccato
electric piano or clavinet parts. Beats Only may be the better alternative for dry drum
recordings.
Support of Third Party Algorithms
Logic Express allows you to access the pitch shift and time stretch algorithms of the
following third party plug-ins in the Time and Pitch Machine:
 Serato: Pitch’n Time
 Izotope: Radius
Note: These algorithms can only be accessed in the Time and Pitch Machine if the
corresponding Audio Unit plug-ins are installed, and authorized, on your system.