User manual
16
ULTRADRIVE PRO DCX2496
4. MENU STRUCTURE AND EDITING
The FREQ parameter controls the cutoff frequency, at which
the filter starts working. In the case of the low-pass and high-pass
filters, the cutoff frequency is the point, at which low and/or high
frequencies are processed. The entire frequency spectrum ranges
from 20 Hz to 20 kHz.
Use the GAIN parameter to define the degree of boost/cut
applied to a specific frequency band. The setting range is from
-15 to +15 dB.
+ When you set GAIN to 0 dB, the corresponding filter is
inoperative! This means that you cannot select a new
type. Only when this values is higher or lower than 0
dB, will the filter be activated, and you can select a new
filter type. Please note that two or more filters are
used for one frequency range when LINK is active.
Consequently, the processor performance will decrease.
With the Q parameter you can set both the quality of the band-
bass filter and the amount of interaction with adjacent frequency
ranges around the center frequency. The higher this value, the lesser
the influence on neighboring frequencies. This function is available
only for the band-pass filters; its range is adjustible from 0.1 to 10.
The number of filters available depend on the processing power
(>FREE) available. Filters can be allocated to either the inputs or
outputs in any proportion. The more filters are activated, the lower
the processing power and vice versa.
4.3.4 DYNAMIC EQ (FILTER)
As the DYNAMIC EQ is a highly complex module, its parameters
are allocated to two pagesthe FILTER and the DYNAMICS
parameters pages.
The DYNAMIC EQ influences a specific frequency range of the
signal, depending on the volume level. It can either boost or cut
this frequency range, depending on the gain setting made by the
user. If the gain control is set to lower the respective frequency
range in level, and if a preset THRESHOLD is exceeded, the EQ
modifies the sound by reducing the gain of the frequency range.
The amount of gain reduction applied is defined by the RATIO
value. When the signal drops below threshold again, the frequency
range is smoothed out again, i.e. the DYNAMIC EQ stops
processing the signal.
When you define a certain boost with the GAIN control, the gain
of the frequency range is raised depending on the volume level.
When the level of the selected frequency range drops below a
preset THRESHOLD, the range is boosted by a certain amount
(RATIO). As soon as the threshold is exceeded again, the
DYNAMIC EQ stops processing the signal.
Fig. 4.34: In A ß Dynamic EQ (ß Filter)
The complete DYNAMIC EQ (FILTER) page corresponds to the
EQ page in terms of operation and to the parameters in terms of
number and type. Exception: Only one filter is selectable.
4.3.5 DYNAMIC EQ (DYNAMICS)
On this page you can edit both the threshold and the operating
mode of the compressor and/or expander (volume-dependent
sound processing).
Fig. 4.35: In A ß Dynamic EQ (ß Dynamics)
The THRESHOLD parameter defines a threshold, activating the
filter function once that threshold is exceeded. If the filter has been
set to reduce the gain on the DYNAMIC EQ (FILTER) page (GAIN
< 0), this frequency range will be cut, as soon as it exceeds the
threshold.
However, if the filter has been set to raise the gain (GAIN > 0),
the frequency range is boosted, as soon as its level drops below
the threshold. The threshold setting range is from -60 to 0 dB.
Next, you can use the RATIO parameter to define the amount
of gain boost/cut. RATIO adjusts the level balance between the
input and output signals. Available settings range from 1.1 : 1
(minimum boost/cut) to oo : 1 (maximum boost/cut).
ATTACK defines how fast the DYNAMIC EQ reacts to signals
exceeding or falling below THRESHOLD, and can be set from
1 to 200 milliseconds.
RELEASE controls the recovery time needed by the EQ to stop
processing the signal, once it has exceeded or fallen below
THRESHOLD (depends on the GAIN setting). Available RELEASE
times are from 20 to 4,000 milliseconds.
Tab. 4.3: Band-pass settings with extreme values
(results in fig. 4.36)
Fig. 4.36: Filter curves with gain above/below threshold
4.4 SUM menu
In addition to its inputs A-C, the ULTRADRIVE PRO DCX2496
provides an internal source signal that can be composed of these
three input signals. This SUM signal can be edited at any time,
much like any other input signal, so that you have a maximum of
four separate source signals available.