User Manual

31
Create Vibrato Functions
The controls in this section are designed to add
a synthesized vibrato to the input.
While vibrato is typically perceived to be a
variation solely in pitch, careful analysis shows
that, depending on the voice or instrument
and the style of the individual performer,
variations in amplitude (loudness) and formant
resonances are also involved. Reflecting
this, Auto-Tune Evo includes a plethora of
vibrato functions to allow the creation of
much more convincing vibratos. (And for the
adventuresome, they can be abused to create
some “interesting” effects.)
The controls are:
Shape Menu
Selects the
shape of the
vibrato.The
choices are:
NO VIBRATO Pretty self-explanatory.
SINE WAVE Changes smoothly from minimum
to maximum and back again. The most
common choice for a conventional vibrato.
SQUARE Jumps to maximum where it spends
50% of the cycle and then jumps to minimum
for the remaining 50% of the cycle.
SAWTOOTH Gradually rises from
minimum to maximum and then drops
instantaneously to minimum to start the
cycle again.
Rate
Sets the rate of the vibrato over a range
of 0.1 Hz to 10 Hz. The default Rate
setting is 5.5 Hz. Double-clicking or
Command (Mac)/Control (PC) clicking
the Rate knob will reset it to that value.
Variation
Sets the amount of random variation
that will be applied to the Rate and
Amount parameters on a note to note
basis. Useful for humanizing the vibrato
by adding random “errors.”
The range is from 0 (no variation) to
100 (maximum variation). The default
Variation setting is 20. Double-clicking or
Command (Mac)/Control (PC) clicking the
Variation knob will reset it to that value.
Onset Delay
Sets the amount of time (in msec) between the
beginning of a note and the beginning of the
onset of vibrato. The range is from 0 to 1500ms
(1.5 seconds). The default value is 500ms.
Double-clicking or Command (Mac)/ Control
(PC) clicking the Onset Delay knob will reset it
to that value.
Onset Rate
Sets the amount of time (in msec) between
the end of the Onset Delay (set above) and
the point at which the vibrato reaches the
full Amounts set in the Pitch, Amplitude and
Formant Amount settings. The range is from 0
to 1500ms (1.5 seconds). The default value is
500ms. Double-clicking or Command (Mac)/
Control (PC) clicking the knob will reset it to that
value.
Onset Example: As an example of the above
parameters, assume an Onset Delay of
1000ms and an Onset Rate of 750ms. In that
case, each time a new note starts there will be
no vibrato at all for the first second (1000ms)
followed by a 3/4 second (750ms) period during