User Manual

18
correction will result in the “munchkinization”
eect familiar from tape speed changing and
early digital sampling. (Of course, if singing
chipmunks are what you’re going for, leave
Formant Correction o.)
The default Transpose setting is  semitones
(i.e., no transposition). Double-clicking or
Command (Mac)/Control (PC) clicking the
Transpose knob will reset it to that value.
Throat Length
As mentioned above,
the shape of a singer’s
throat is a prime
contributor to their
vocal character. Auto-
Tune 8 lets you modify
the vocal quality of a
performance by actually
varying the geometry of
a physical model of the human vocal tract and
processing the original performance through
that model.
The Throat Length control lets you modify the
length of the modeled throat. The range of the
control is 50 to 180. Values above 100 represent
a lengthening of the throat while values below
100 represent a shortening of the throat.
The actual values represent the percentage
change in the throat length. For example, a
value of 120 represents a 20% increase in throat
length, while a value of 70 represents a 30%
decrease in throat length.
NOTE: This control is only active when
Formant Correction is engaged.
When Formant Correction is not
engaged, this control is disabled (grayed out).
In addition to simply changing vocal timbre,
increasing throat length is useful when the
original performance is female and you want
to transpose it down and have it sound more
male. Conversely, decreasing throat length
is useful when the original input is male and
you want to transpose it up and have it sound
female or childlike.
NOTE: While this control gives you
the ability to radically change the
throat length, keep in mind that
the variation in the length of human vocal
tracts is rarely more than about 20% in either
direction. If you are looking for a “realistic”
vocal characteristic, start with modest settings
of this control. More extreme settings can
produce dramatic results, but probably not
what anyone would call “realistic.”
Command (Mac)/Control (PC) click the control
to reset it to its default value of 100.
IMPORTANT NOTE: This function is
specifically for changing the existing
quality of a voice, not for manual
formant compensation for pitch shifting.
Auto-Tune 8 automatically applies appropriate
formant correction when it shifts pitch with
Formant Correction Enabled.
ANOTHER NOTE: This control sets the
overall Throat Length for your entire
track. Additionally, Throat Length
can be adjusted on a note-by-note basis in
Graphical Mode using the Throat Length
Adjust function described in the Graphical
Mode section below.
Formant Correction
Click the Formant button to
toggle Auto-Tune 8’s formant
correction function on and o.
The button will turn blue when
formant correction is active and will be pale
gray when it is inactive.
Engaging Auto-Tune 8’s Formant Correction
prevents the shifting of a voice’s resonant
frequencies to ensure that its vocal
characteristics are preserved over the pitch
shift range. (For a more complete explanation
of formant correction, refer to the Pitch
Shifting and Formant Correction section in
Chapter 2.)