Attero Tech Box 4 I/OP - Manual (Page 18)

VoiceBox 4 I/OP
User Manual
 Attero Tech LLC 2010 Page 14 614-00008-02
3.4.1 – Output EQ
The output EQ stage has five cascaded bands of parametric EQ
followed by a high pass filter. Each parametric EQ has
adjustable frequency (20 Hz to 20 kHz), bandwidth (0.1 to 3.0)
and gain (-12 dB to +12 dB). Each stage has it’s own clip LED to
warn if the signal at the stage is clipping or not.
The high pass filter is a 12 dB / Octave filter with adjustable
Frequency from 20 Hz to 20 kHz. This filter also has a clip
indicator. It also has a bypass facility that, when active, will
allow the audio to ignore this filter.
3.4.2 – Output Limiter
The output limiter has four controls are available for each output.
The bypass button allows the limiter to be completely bypassed and its
settings ignored. Click on the button to toggle the state of the bypass. If
the red indicator is on, the bypass is activated.
The remaining controls control the specific aspects of the limiter.
The threshold control ranges from -100 dB to 0 dB, the attack control
ranges from 1 ms to 1 s, and the release control that ranges from 10 ms
to 30 s.
There is also a gain reduction meter to given an approximate indication
of the amount of limiting that is actually taking place.
3.4.3 – Output Gain
The Output Gain control allows the overall level of the signal to be adjusted before
it is fed to the local outputs
The fader sets the gain from -100 dB to +12 dB. The meter alongside shows the
current level after all the input processing has taken place, including the gain
factor. There is also a clipping LED.
The gain control also has two toggle indicators. The upper one marked with an “M”
is the “Mute” button. The lower button marked with an “I” is the “Polarity Invert”
button.
3.4.4 – Output Delay
The delay control adds buffering to delay the audio signal. If the control is set to 0, the
control is essentially bypassed.
A maximum delay of up to 20 ms can be added in total.
Figure 20 - Local Output Limiter Controls
Figure 21 - Output Gain Controls
Figure 22 - Output Delay
Control
Figure 19 - Local Output EQ Controls