Owner`s manual
14
How Auto-Tune Live corrects pitch
Auto-Tune Live works by continuously tracking the pitch of an input sound
and comparing it to a user-defined scale. The scale tone closest to the input
is continuously identified. If the input pitch exactly matches the scale tone,
no correction is applied. If the input pitch varies from the desired scale tone,
an output pitch is generated which is closer to the scale tone than the input
pitch. (The exact amount of correction is controlled by the Retune Speed
and Humanize settings, described below and in Chapter 3.)
Scales
The heart of Auto-Tune Live pitch correction is the Scale. Auto-Tune Live
lets you choose from major, minor, chromatic or 26 historical, ethnic and
micro-tonal scales. Individual scale notes can be bypassed, resulting in
no pitch correction when the input is near those notes. Individual scale
notes can also be removed, allowing a wider range of pitch correction for
neighboring pitches. The scale can be detuned, allowing pitch correction to
any pitch center.
For added flexibility, you can also select the target pitches in real time via
MIDI from a MIDI keyboard or a pre-recorded sequencer track.
Retune Speed
Auto-Tune Live also gives you control over how rapidly, in time, the pitch
adjustment is made toward the scale tone. This is set with the Retune Speed
control (see Chapter 3 for more details).
Fast Speed settings are appropriate for short duration notes and for
mechanical instruments, like oboe or clarinet, whose pitch typically changes
almost instantly. A fast enough setting will also minimize or completely
remove a vibrato, as well as produce the iconic Auto-Tune Vocal Eect.
Slow Speed settings, on the other hand, are appropriate for longer notes
where you want expressive pitch gestures (like vibrato) to come through at
the output and for vocal and instrumental styles that are typified by gradual
slides (portamento) between pitches. An appropriately selected slow setting
can leave expressive gestures intact while moving the average pitch to the
correct tonal center.
Vibrato
Auto-Tune Live allows real-time adjustment of the depth of any natural
vibrato present in the input.
Auto-Tune Live can also add a vibrato to an input that does not naturally
exhibit one. You can program the vibrato rate along with individual vibrato