St 3-Band Eq - Korg Soundlink DRS OASYS PCI Patches & Effects Manual

St 3-Band EQ

St 3-Band EQ
This is a stereo-in, stereo-out three-band EQ with high and low shelving and a fully
parametric middle band. As with all EQs in the OASYS PCI, the curves are smooth
and symmetrical in frequency, modeling analog EQs.
For the more technically inclined, the EQ calculations are all double-precision,
using first-order error-feedback.
Symmetric Q
The peaking band's Q is identical for boost and cut, which may be referred to as
"symmetric Q." Some specific EQs use asymmetric Q, in which a given Q for cut is
1/3 the actual bandwidth of the same Q for boost. So, if you are used to a particular
type of equalizer, and the Q in this effect doesn't seem right when cutting, try
multiplying the Q by three.
Input
Level
-INF, -69.0 to 0.0dB. This sets the input level for the effect. It does not affect the dry
signal.
Note that extreme positive or negative gain settings can dramatically increase the
volume within the EQ effect, so it may be necessary to decrease the input volume to
avoid clipping.
Low Shelf
Frequency
20-2000Hz. This sets the cutoff frequency of the low shelving EQ, in Hz. This is the
point at which gain is 3dB below maximum, as shown in the figure "High and Low
Shelving EQ," on page 382.
Gain
+/-18.1dB. This sets the amount of boost or cut for the low shelf.
Mid
Center
200-4000Hz This sets the center frequency of the parametric mid band, in Hz.
Q
0.25-32.00. This sets the bandwidth of the parametric mid band. Low Q means a
wider bandwidth, for more gentle, broad EQ; high Q means a narrow bandwidth,
for cutting or boosting very specific frequencies. A Q of 0.25 creates a bandwidth of
396
EQ
OASYS PCI