Sound Processing; Fbq Equalizer; Digital Effects Processor - Behringer ULTRACOUSTIC ACX450 User Manual

ULTRACOUSTIC ACX450/ACX900/ACX1800

4. SOUND PROCESSING

The ULTRACOUSTIC offers many options for sound processing.
The ACX1800 includes, for example, an FBQ equalizer, a multi-
effects unit and a compressor. The various processing options
are explained in this chapter.

4.1 FBQ equalizer

A graphic equalizer with FBQ spectrum analyzer is available
for sound adjustment and correction. If the sliding controllers
are in neutral position (0), the signal is not modified.
s To boost the frequency range, move the respective sliding
controller up.
s To dampen the range, move the sliding controller down.
s Press the FBQ switch
FBQ function: Each controller is equipped with a LED indicating
the level of the associated frequency range of the controller by
means of its brightness. This assists you in identifying the
controller that must be used to edit the sound. If the sound is for
example too dull or too droning, one of the LEDs is probably very
bright, indicating the sliding controller that should be moved down
to reduce the bass level. On the other hand, you can quickly
identify frequency ranges whose level is too low (LED barely lit)
to increase it.
+

4.2 Digital effects processor

One of the key features of your ULTRACOUSTIC are the two
built-in multi-effects processors that operate independently of
each other in both channels. Each effects module offers a total
of 16 different programs that are grouped in four categories.
s To switch effects on or off, press the IN/OUT switch
at the ULTRACOUSTIC or at the foot switch.
s Turn the FX SELECT controller
The effects are described in the following overview:
8
to activate the FBQ display.
to select a program.
4. SOUND PROCESSING
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Chamber

(
Room
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Hall

Concert

Chorus
2 '

Flanger

0
Phaser

Tremolo
/ <
Chorus / Delay 400 ms
 '

Flanger / Delay 400 ms
2 '
Chorus / Delay 300 ms
0 
Flanger / Delay 300 ms

Delay 80 ms
$ <

( / Delay 300 ms

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Delay 400 ms

Delay 500 ms
Table 4.1: Effects programs
s Use the FX LEVEL controller
audible.
s Edit the effect using the PARAMETER controller
(only in ACX1800).
The reverb presets are effects that imitate the reverberation of
various large rooms. Use the PARAMETER controller to adjust
the reverberation time (decay).
1 simulates the typical characteristics of a studio.
This effect is useful in cases where you need unobtrusive
reverb to liven up the signal.
2 : Reverberation typical for rooms of medium size,
with clearly audible reverb from walls.
3 Simulation of a lively large hall with considerable
echo.
4 simulates the prolonged reverb in a large concert
hall.
This group includes four modulation effects that are generated
in different ways. For each effect, you can adjust the depth and
speed of the modulation.
5 give guitar signals more depth and width. This is
achieved by means of a modulated delay of the input
signal.
6 : Popular guitar effect achieved by constant
modulation of the tone pitch.
7 : The phase effect is similar to the flange, but
somewhat subtler. It is achieved by superimposing a
phase-shifted effects signal on the input signal.
8 : Intensive variation of the volume at a preset
rate.
This group includes a number of dual effects where for example
a chorus or flanger effect is combined with a delay. In the
ACX1800, you can adjust the volume of the delay effect.
9 with a delay of 400 ms.
10 with a long delay (400 ms)
11 with a short delay (300 ms).
12 with a delay of 300 ms.
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Decay
Decay
Decay
Decay
Depth
Depth
Speed
Speed
Delay Level
Delay Level
Delay Level
Delay Level
Feedback
Feedback
Feedback
Feedback
to make the effect