User Manual

35
Clicking the Stereo Noise button will toggle it
between mono and stereo noise. The button
will turn blue to indicate the selection of
stereo noise.
NOTE: Stereo noise is only
available from stereo or mono-
>stereo versions of ARTICULATOR
Evo. If you have instantiated a mono
version, this button will be disabled.
FORMANT EXTRACTION SECTION
The controls in this section allow you to
optimize the formant extraction process for
your specific Control Signal.
Voice Type
Use this control
to select the
range of the
track you will
be processing. Choices include soprano voice,
alto/tenor voice, baritone/bass voice and
instrument (a general setting for anything that
isn’t actually a vocal).
Matching the appropriate algorithm to
the input results in more accurate formant
extraction.
To select voice type, click on the Voice Type
pop-up and then select the desired range from
the pop-up list.
NOTE: Choosing the wrong Voice
Type (or just forgetting to set it
at all) can result in compromised
performance. Pay attention.
Tracking
In order to
accurately analyze
the Control Signal,
ARTICULATOR
Evo requires
a periodically
repeating
waveform,
characteristic of a voice or solo instrument.
The Tracking control determines how much
variation is allowed in the incoming waveform
for ARTICULATOR Evo to still consider it
periodic.
If you are working with a well-isolated solo
Control Signal (e.g., tracking in a studio or from
a multitrack master) you can typically set the
Tracking control to 25 and forget it.
If, on the other hand, your Control Signal is
noisy or not well-isolated, or you are dealing
with a particularly breathy or guttural voice,
it may be necessary to allow more signal
variation (higher Tracking numbers). However,
under these circumstances tracking is not
guaranteed and a too “relaxed” setting may
negatively aect the accuracy of the formant
extraction.
To adjust Tracking, click on the knob and move
the cursor up to turn the knob clockwise, or
down to turn it counterclockwise. Remember,
higher numbers allow more variation, while
lower numbers require less.
Command (Mac)/Control (PC)/Option (Pro
Tools) clicking on the knob will reset it to its
default value of 25.
FORMANT MODULATION SECTION
Another way of looking at the Control Signal’s
formant information is to think of it as a real
time model of the vocal tract of the person
singing or speaking. The controls in this section
allow you to modify the extracted formant
information by modifying the geometry of
that modeled throat.
Throat Length
This control lets
you increase or
decrease the
length of the
modeled throat
that is applied to
the Audio Signal.
Values above
1.00 represent a
lengthening of the throat while values below
1.00 represent a shortening of the throat. The
actual values represent the percentage change
in the throat length. For example, a value
of 1.20 represents a 20% increase in throat
length, while a value of 0.80 represents a 20%
decrease in throat length.