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IN1606 and IN1608 Series Scaling Presentation Switcher • Internal Web Pages 102
Ducking parameters
Ducking lowers the level of microphone or program material (based on a source signal from
another microphone) for the duration of the signal that is present at the source microphone.
It restores the original level after the source signal ceases and after the hold and release
times are met. This is useful when:
• Program material must be attenuated in order to accentuate the voice of a narrator.
• One microphone is used by a chairman or master of ceremonies and must have priority
over other microphones and program material.
• A paging microphone must attenuate all other signals.
To apply ducking for microphone inputs:
1. Click the Mic/Line Input tab (see figure 71,
1
on page 99).
2. From the desired Mic/Line input panel, select the Enable Ducking check box (
4
).
The following ducking options become available:
• Threshold — Sets the input signal level in dB that the ducking source must exceed
before ducking begins. The default is -30 dBFS.
• Hold time — Determines the time in milliseconds after a ducking source signal
drops below the threshold before ducking ceases. The default value is 1000 ms.
• Release time — Determines how long in milliseconds the ducking targets take to
restore signal levels after the ducking source level is below the threshold and the
hold time is met.
• Duck (targets) — Shows all potential targets to be attenuated when ducking is
enabled.
• Duck by (attenuation) — Attenuates the corresponding duck target in dB.
3. In the Threshold field (
5
), adjust the value by one of the following methods:
• Enter a value in the Threshold field and press the <Enter> or <Tab> key.
• Click the Up or Down arrow buttons.
If ducking does not occur quickly enough to avoid loss of speech or program material
from the ducking source, decrease this setting. If ducking occurs too soon, allowing
background noise to trigger ducking, increase the setting.
4. In the Hold Time field (
6
), adjust the value by one of the following methods:
• Enter a value in the Hold Time field and press the <Enter> or <Tab> key.
• Click the Up or Down arrow buttons. The default value is 1000 ms.
5. In the Release Time field (
7
), adjust the value by one of the following methods:
• Enter a value in the Release Time field and press the <Enter> or <Tab> key.
• Click the Up or Down arrow buttons.
6. In the list of Duck (target) check boxes (
8
), select the targets to attenuate when the
threshold is met. Only selected inputs are ducked.
NOTE: Only one mic input can be selected as a duck target at a time.
7. For those targets checked in step 6, adjust the adjacent Duck By field (
9
) in one of the
following methods:
• Enter a value in the Duck By field and press the <Enter> or <Tab> key.
• Click the Up or Down arrow buttons. The default is 20 dB. If additional attenuation of
a target is required, increase this value.