10.6

Table Of Contents
477Logic Pro Instruments
Logic Pro Sculpture BodyEQ models
All other BodyEQ models provide the following parameters:
Body EQ parameters
Formant–Intensity knob: Rotate to scale the intensity of model formants. Any formants
(harmonics) in the model become louder or are inverted, depending on how this
parameter is used. A value of 0.0 results in a flat response. A value of 1.0 results in
strong formants. Negative values invert the formants.
Formant–Shift knob: Rotate to shift the formants logarithmically. A value of −0.3,
for example, shifts all formants one octave downward, and a value of +0.3 shifts the
formants up one octave. A value of +1.0 shifts up by a factor of 10—from 500Hz to
5000Hz, for example.
Formant–Stretch knob: Rotate to stretch the formant frequencies, relative to each other.
This parameter alters the width of all bands being processed by the BodyEQ, extending
or narrowing the frequency range. Low Formant Stretch values move the formants
closer together (centered around 1kHz), whereas high values move the formants
farther apart from each other. The control range is expressed as a ratio of the overall
bandwidth.
Note: When combined, Formant Stretch and Formant Shift alter the formant structure of
the sound and can result in some interesting timbral changes.
Fine Structure slider: Drag to enhance the spectral (harmonic) structure, making the
overall harmonic makeup of the sound more precise. This results in a more detailed
sound that is harmonically richer and—depending on the model selected—more guitar-
like or violin-like, for example. In other words, the resonant cavities of the instrument
become more resonant—somewhat like the increased depth of tone provided by a
larger-bodied guitar. A value of 0.0 denotes no fine structure. A value of 1.0 results in
enhanced/full fine structure of the selected model.
Note: Heavy use of Fine Structure may be quite CPU intensive. Also note that Fine
Structure may not actually result in much difference in your sound. It is highly
dependent on several string, Waveshaper, and BodyEQ model parameter settings. As
always, use your ears!
Adjust BodyEQ models graphically
In Logic Pro, do the following:
To control the Formant Intensity parameter: Drag the graphic vertically.
To control the Formant Shift parameter: Drag the graphic horizontally.