TC-Helicon VoicePro, Instruction Manual

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Section 6: Detailed Parameter Descriptions
CHARACTER | Resonance
Resonance allows you change the positioning of the
harmonic content that forms the identity of a voice. The
results can yield anything from subtle tonal changes to a
new character. The Freq Shift Parameter is very useful for
tuning the Resonance Style to qualities of different voices.
Style
A Resonance Style sets all the Resonance Parameters to a
preset sound. The styles are authored with the amount at
"Unity". A style can be very dependent on the input voice.
The name of the style will give you some indication of what
the Style will do.
Amount
The Amount Parameter allows you to get more or less of
the selected Style. With a value of "Unity", all the
Resonance Parameters represent their actual values.
Above or below unity, the parameters are scaled to achieve
more or less of the sound.
Length
Alters the apparent vocal tract length. Changing length is
similar to changing the apparent gender of the input voice.
Band Gain, Freq, BW
There are three parametric bands controlled by Gain, Freq
and BW, which control the spectral region that is modified.
A positive or negative gain moves spectral energy to higher
or lower frequencies respectively. Typically, the first,
second and third band operate at low, mid and high
frequency ranges respectively.
Freq Shift
Shifts the frequency center of all of the parametric bands.
This can be used to tune a Resonance Style to a particular
voice.
UV Balance
Controls how Resonance is applied to voiced and un-
voiced segments. A value of “0” applies Resonance to
voiced and unvoiced evenly, whereas positive values apply
more Resonance to unvoiced and less Resonance to
voiced. Similarly, negative values apply more Resonance to
voiced and less Resonance to unvoiced.