Bedienungsanleitung Behringer DEQ2496 (Seite 9 von 22) (Englisch)

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ULTRACURVE PRO DEQ2496

3. MENU STRUCTURE AND EDITING

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.

On pages 1 and 2 of the DEQ menu you can adjust the necessary

settings to determine the threshold and the way of sound

processing. Additionally, you will find a graphic representation of

the control curve with regard to THRESHOLD, GAIN and RATIO. In

the center of the display, the LEVEL meter (left) indicates the

filtered DEQ input level (control signal), while the GAIN meter (right)

shows how much boost/cut is applied to the signal.

Page 3 includes a frequency diagram showing the filter curves

with regard to frequency and threshold. The current DEQ input

level can be seen from the LEVEL meter on the right.

Fig. 3.4: DEQ menu (page 1)

The make-up gain parameter M-GAIN on page 1 allows you to

set the amount of boost/cut for the filter with the upper data

wheel. The setting range is from -15 to +15 dB. THRESHOLD

(large data wheel) defines the threshold as of which the filter

function is activated. If the filter has been set to attenuate the

signal (M-GAIN < 0), then the desired frequency range (see

page 3) will be lowered in level as soon as it exceeds the

threshold. If boost is required (M-GAIN > 0), the frequency range

will be raised in level as soon as the signal drops below the

threshold. The RATIO parameter (lower data wheel) determines

the amount of boost/cut applied to the respective frequency

range, if the signal exceeds or drops below the threshold. The

setting range is from 1:2 to 1:100.

Fig. 3.5: DEQ menu (page 2)

On the second page of the DEQ menu (accessed by pressing

the DEQ or PAGE key), you can define two additional dynamics

parameters.

ATTACK (upper data wheel) determines how fast the dynamic

EQ starts processing when the signal exceeds or drops below

the threshold. The ATTACK times available range from 0 to 200

milliseconds. Press this control to select a coarse or fine

adjustment scale.

The RELEASE parameter (lower data wheel) lets you adjust

the time needed by the EQ to release the sound after the signal

has exceeded or dropped below threshold (depending on the

GAIN setting). The RELEASE times available range from 20 to

4,000 milliseconds. Here, too, you can press the control to select

a coarse or fine adjustment scale.

It is on this page that you can also edit the THRESHOLD value

(large data wheel), so as to be able to make some readjustments

without having to change to another page.

Fig. 3.6: DEQ menu (page 3)

As mentioned before, page 3 includes a frequency diagram

and the gain reduction meter. MODE (upper data wheel) defines

the filter type, and you can choose from high-shelving, low-

shelving and band-pass filters.

The FREQUENCY parameter determines the center frequency

of the filter (large data wheel). In the case of low-shelving and

high-shelving filters, this is the cut-off frequency as of which

the low or high frequencies are processed. The entire frequency

spectrum ranges from 20 to 20,000 Hz. Press the data wheel to

select a coarse (1/6 oct. per step) or fine adjustment scale

(1/60 oct. per step).

If you selected bandpass under MODE, the parameter

BW(OCT) appears in the lower right part of the display. Here,

you can use the lower data wheel to adjust the bandwidth of

your choice and thus determine the width of the filter curve

(1/10 oct. to 10 oct.).

The B key selects which of the dynamic EQs is displayed.

Three EQs are available for each stereo side. Keep the key

pressed to reset the settings of the currently selected DEQ.

This table shows an example with extreme settings, thus

illustrating how a dynamic EQ works:

1.00 kHz

+15 dB > continuous line

0 dB > broken line

-15 dB > dotted line

0.1

-40 dB

1:100

Tab. 3.1: Bandpass with extreme settings (see also fig. 3.7)

Behringer DEQ2496 Seite 9

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