User`s manual

AEQ FORUM
Digital audio mixer for broadcast applications
92
The threshold must be adjusted to a level slightly higher than the level of the noise to be
avoided. Thus, the threshold will be set at a very low level. Above the threshold, the noise gate
does not act (unity gain), letting the rest of the signal through without processing it. The gate
remains closed; i.e. when the signal surpasses the threshold level, the gate opens. The attack
time is the time the gate takes to open (unity gain) when it receives a signal whose amplitude
exceeds the threshold level; this time must be short to avoid cutting off the beginning of a
sentence or song. The release time is the time the gate takes to close when the signal level falls
below the threshold. The hold time is the minimum time during which the gate remains open; it
is used to prevent the gate from closing when the signal level drops briefly—for example, when
an announcer pauses while speaking. The hold time prevents the gate from opening and
closing constantly in the presence of a signal whose level fluctuates in a range close to the
threshold level.
4.3.4.3. Advanced configuration of Equalizer.
From the initial screen of the pre-sets advanced information menu (“Digital Sound Processes”)
you can configure and activate/deactivate the Equalizer operation.
When you select the “Active” checkbox, the “Configure” button gets active and gives you
access to the graphic display where the Equalizer associated parameters can be modified.
4.3.4.4. Advanced configuration of Low Pass Filter.
From the initial screen of the pre-sets advanced information menu (“Digital Sound Processes”)
you can configure and activate/deactivate the Low Pass Filter operation.
When you select the “Active” checkbox, the “Configure” button gets active and gives you
access to the graphic display where the Low Pass Filter associated parameters can be
modified.