Eq Bypass; Deq; Thr (Threshold); Ratio - BSS Audio FDS366T OMNIDRIVE User Manual

FDS-366T
Outputs - EQ/DEQ

EQ Bypass

"On" or "Bypass"
An EQ bypass facility is now available. To switch out the effect of both the
EQs and Dynamic EQ select "Bypass" in this screen.
DEQ Dynamics
The first EQ in each output can be programmed to work dynamically. The first
DEQ screen sets up the parameters of the EQs' compressor; the EQ screen that
Screen
follows sets the EQ parameters.

DEQ

"On" or "Off"
Determines whether the Dynamic equaliser on this output channel is enabled
for dynamic operation. When set to OFF, the following DEQ equaliser will
operate as a conventional equaliser. When set to ON, the boost/cut value of
the equaliser is dynamically varied according to the amplitude of the signal. If
the DEQ parameter is selected as "Off" then the other parameters on this DEQ
screen are not selectable - switch DEQ to "On" to adjust them. Useful for
previewing the effect of the dynamics independantly.

Thr (Threshold)

(-30dBu to +20dBu in 0.1dB steps)
Sets the signal level that is required to trigger compressor operation.
If a signal is below threshold in 'boost' mode, or above threshold in 'cut' mode,
the Dynamic Equaliser will not compress it. Adjusting the threshold control
downwards brings a signal closer to, or takes it above, the threshold level
respectively.
Once the input signal is above the threshold level in 'boost' mode, or below
threshold in 'cut' mode, gain reduction or compression will occur. The amount
of effective boost/cut is indicated on the bargraph meter to the left of the DEQ
parameters screen or on the curve itself in the DEQ Equaliser window. What
actually happens to the sound when compressing is to a large extent governed
by the Ratio parameter setting.
In use the threshold and ratio controls are generally adjusted as a pair whilst
listening to the result. The attack and release parameters also change the
characteristics.

Ratio

(2:1, 5:1, 10:1, 20:1, INF)
Determines the aggressiveness of the dynamic equaliser. Higher settings
control the boost-cut very tightly, just like a limiter. Lower settings produce a
more relaxed result. In applications where gentle compression is required, it is
advantageous to change from the linear to compression region in a very
gradual manner, rather than the more conventional abrupt manner. The FDS-
366T Dynamic Equaliser has been configured so that for low settings of the
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