Apple Logic Pro X - Manual (Page 889)

Chapter 25 Preferences, project settings, and key commands 889
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User: Stretch Upper slider: Determines the deviation (from the equal tempered scale) in the
treble end of the sound. The higher the value, the farther down the low notes are tuned. A
setting of 0 results in an equal tempered scale tuning.
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User: Stretch Lower slider: Determines the deviation (from the equal tempered scale) in the bass
end of the sound. The higher the value, the farther down the low notes are tuned. A setting of
0 results in an equal tempered scale tuning.
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User: Root Key pop-up menu: Allows you to choose a global key (C-B) for the chosen scale. This
provides an easy way to reference the chosen scale to any root note.
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Hermode Tuning: Type pop-up menu: Allows you to set different Hermode Tuning modes.
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Classic (3/5-all): This mode provides a broad and regular tuning of pure 5ths and 3rds. In
cases of conflict, the degree of purity is temporarily reduced. This mode can be used for
all types of music. The value of the Depth parameter indicates the degree of the 5th and
3rd purity. A setting of 100% determines maximum purity. A 10% value is the lowest purity
setting. Off sets the tuning to an equal tempered scale.
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Pop/Jazz (3/5/7-all): 5ths, 3rds, and 7ths are changed in this mode. It’s great for Pop and Jazz
styles, especially when using sustained chords. It’s less suitable for polyphonic music, as the
detuning of the natural 7th is significant. This mode should always be used with a Depth of
90% or 100%, as other values will render the natural 7th acoustically ineffective.
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Baroque (3/5-adaptive): This mode tunes pure 5ths and 3rds (with changing characteristics).
In tonal music, with a clear harmonic center, the middle chords are tuned very purely,
whereas more distant chords are tuned with less purity. If the harmonic center becomes
unclear, all chords are tuned with equal purity. As with the other mode parameters, a Depth
value of 100% determines the highest purity, and a value of 10%, the lowest purity.
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Hermode Tuning: Depth slider: Allows you to set degrees of effect between 0% and 100%.