Recording Handbook - Hol.gr

Mid: Boosts or cuts frequencies in the mid range of the frequency
spectrum (100 Hz - 10 Khz). A "peaking" control, it tends to make more
extreme changes at the mid-range frequencies (around 1 KHz) and less
extreme changes at either end of the mid range (100 Hz and 10 KHz).
Mid Freq: Also seen as "Sweep", "Para EQ" and other variations. Alters
the center frequency or "peak" of the Mid EQ control. This allows the
Mid EQ control more flexibility in boosting or cutting frequencies
toward the lower-mid and upper-mid range of the spectrum.
High: Boosts or cuts frequencies in the high (treble) half of the
frequency spectrum (1 KHz - 20 KHz). A "shelving" control, it tends to
make more extreme changes at higher frequencies (20 KHz) and less
extreme changes at lower frequencies (1 KHz).
(2) Graphic EQ
A form of EQ which is generally designed to alter specific, very
narrow frequency bands in an audio signal. The number of controls may
vary from as few as three (effectively another form of parametric EQ)
to as many as 30 or more per channel, with the audible frequency
spectrum evenly divided among them. Controls are usually sliders, but
may also be seen as "plus-or-minus" buttons with an LED or flourescent
display indicating the amount of boost or cut for each frequency.
These controls are of the "peaking" type, centering on a specific
frequency with a small amount of overlap with adjacent controls.
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