Behringer high-precision digital 24-bit/96 kHz EQ/RTA mastering processor DEQ2496 - Manual (Page 6)

6 ULTRACURVE PRO DEQ2496 User Manual
Turn the upper data wheel to select a frequency band for editing with the FREQ
parameter. 31 bands are available comprising the entire frequency spectrum
from 20 Hz to 20 kHz. With the large data wheel (GAIN) you can boost or cut the
level of the selected band. The setting range is from -15 to +15 dB.
VPQ (Virtual Paragraphic Equalizer) function
The lower data wheel (BW/OCT) additionally assigns the required bandwidth
to the filters. This means that the frequency bands have a peaking boost/cut
characteristic around their center frequency. The number of adjacent frequency
ranges influenced by this is determined by the bandwidth. The setting range is
from 1/3 too 59/3.
As soon as this parameter has been modified, the RESET GEQ message
(left bottom part of display) changes to ACCEPT VALUES. Now, when you press
the B key (or the large data wheel), the current value is stored and you can
continue to enter the filter settings as required.
When you press the lower data wheel, the BW/OCT parameter changes to MODE.
Turn the wheel to select a HIGH or LOW shelving filter. In this case, the GAIN
parameter changes to dB/OCT. Use the large data wheel to adjust the filter slope
from -15 to +15 dB/oct. In HIGH mode, all frequency bands above the selected
frequency are now raised or lowered in level. In LOW mode, all frequency
bands below that frequency are modified. Confirm your entries with the B key
(ACCEPT VALUES).
The A key to the left of the display can be used in DUAL MONO mode to alternate
between the left and right-channel audio signal. Keep the key pressed for
some time to display the settings of both sides and edit them simultaneously.
In STEREO LINK mode both channels are always processed simultaneously.
The B key allows you to reset the filter settings (RESET EQ). Hit it briefly to reset
the currently selected frequency band to 0.0 dB gain. Press it for about 1 s to
reset all frequency bands. Single frequency bands can be reset by pressing the
large data wheel.
3.2.2 PEQ menu
Press the PEQ key to use parametric EQs for signal processing. On each
stereo side, you have ten EQs available, which can be set to PEQ or FBD mode
(Feedback Destroyer: see chapter 3.2.4). In addition to the band-pass filters,
this menu offers filters of the shelving type (high or low), with a slope of 6 or
12 dB/oct.
Fig. 3.2: PEQ menu (page 1)
This menu comprises two pages, as can be seen in the top left part of the
display. Similar to the GEQ menu, page 1 of the PEQ menu provides a graphic
representation of the entire frequency range. Parameter changes can be effected
with the corres-ponding controls (FREQ: upper data wheel, GAIN: large data
wheel, BW/OCT: lower data wheel).
To reset the selected PEQ, keep the B key to the left of the displa`y pressed for
about 1 s. Or hit it briefly to select the parametric filters.
Fig. 3.3: PEQ menu (page 2)
Press the PAGE or PEQ key to select the second menu page. If no parametric EQ
was selected before, page 2 will be displayed immediately, providing a list of the
ten available locations with all relevant parameters. Single filters can be selected
either by turning the lower data wheel or by pressing the lower and upper
data wheels (UP/DOWN). MODE allows you to activate the selected filter with
the large data wheel (press or turn) (PARAM). This will display the associated
parameters FREQ, BW(OCT) and GAIN, which can be selected by turning the
upper data wheel. Value changes must be entered with the large data wheel.
The GAIN setting range is from -15 to +15 dB, the frequency range (FREQ) is from
20 to 20,000 Hz. The FREQ parameter can be adjusted with two scales. The first
scrolls faster through the frequency ranges (1/6 oct. per step), the second
uses much finer increments (1/60 oct. per step). Press the large data wheel to
alternate between these two scales.
The parameter BW(OCT) adjusts the bandwidth of the band-pass filter.
The “width” of the peaking characteristic (1/10 oct. to 10 oct.) is determined by
this value. Additionally, you can select shelving filters here with a slope of 6 or
12 dB/oct. (e.g. L=Low, 6 dB / H=High, 12 dB, etc.)
Explanation:
The low-shelving filter raises (positive gain) or lowers (negative gain)
the level of the frequency band below the adjusted frequency.
The high-shelving filter, on the other hand, raises (positive gain)
or lowers (negative gain) the level of the frequency band above the
adjusted frequency.
The band-pass filter raises or lowers the level of the frequency range
around the center frequency.
The GAIN and BW(OCT) values can be reset by pressing the large data wheel.
In this menu too, the A keys selects the left and right-channel signals. If STEREO
LINK modes has been selected in the UTILITIES menu (chapter 3.5), the parameter
values refer to both sides.
◊ At least one filter must be activated on page 2 to be able to recall the
first page of the PEQ menu.
3.2.3 DEQ menu
Press the DEQ key to select the DEQ menu. Due to their complexity, the Dynamic
EQs have their parameters split up on three pages.
Explanation:
A Dynamic EQ influences a defined frequency range of a signal,
based on the volume level. It can either raise or lower the level of a
specific frequency, depending on the GAIN setting chosen by the user.
When the GAIN setting selected causes the frequency range to
be lowered in level, and when the signal exceeds a pre-defined
THRESHOLD, the EQ starts processing the sound and cuts the level of
the respective frequency range. The amount of attenuation applied
is determined by the RATIO parameter. When the signal drops below
the THRESHOLD, the frequency range is “smoothed out” again, i.e. the
Dynamic EQ stops processing the frequency range.
When the GAIN setting selected causes the frequency range to be raised
in level, this boost depends on the volume level. As soon as the level of
the selected frequency range drops below a pre-defined THRESHOLD,
this results in a signal boost determined by the RATIO parameter. If the
signal exceeds the threshold again, the Dynamic EQ stops processing
the sound.