The Basic EQ parameters differ from other EQ models.
Low/Int knob: Set the gain of a low shelving filter (or scale the intensity of model formants).
Mid/Shift knob: Set the gain of a peak filter (or shift the formants logarithmically). This is sweepable—see “Mid Frequency/Fine Structure slider” below.
High/Stretch knob: Set the gain of a high shelving filter (or stretch the formant frequencies, relative to each other).
Mid Frequency/Fine Structure slider: Sweep the center frequency of the mid band between 100 Hz and 10 kHz (or enhance the spectral (harmonic) structure).
To control the Low parameter: Drag the left third of the graphic vertically.
To control the Mid parameter: Drag the center third of the graphic vertically.
To control the Mid Frequency parameter: Drag the center third of the graphic horizontally.
To control the Hi parameter: Drag the right third of the graphic vertically.