ATEIS UAPg2 - Manual (Page 165)

UAPG2 MANUAL
Version EN.24
165
Use the Ducker Component
As simple example, we will set a system for a speaker with background music.
When the speaker is talking, the background music must decrease its level.
The speaking is using a standard dynamic microphone type SM58. The microphone is connected to
the channel 2 of the "Input A" component, with a input sensitivity at -40dB (set in the input A
component). Then the microphone is linked to the input (S) of the ducker.
The music player (as a CD player) is connected to the input 1 of the "Input A" component. Then the
music is linked to the input (A) of the ducker.
Threshold:
set at -18dB, because less would active the attenuation when the speaker is not
talking if the microphone catch some unexpected noise.
Response time: set very short, because the background music must be attenuated as soon as the
speaker is talking.
Attack and Release times: Which are the "fade in" and "fade out" on the background music.
Set almost one second for the hearing comfort, we want a kind music transition.
Hold time: Set at 700(ms), enough to avoid the music back during the speech breaks.
Audio depth: Set at -20dB, to hear the music during the speech, but at very low level (depending of
the context).