Dan Dugan Sound Design E-2 - Manual (Page 11)

Dugan Model E-2 User Guide Introduction
11
Dugan Music System and Gain Limiting Theory
These functions require the physical Model CP-2 or Dugan Control Panels for Java or
iPad. See Dugan Music System and Gain Limiting on page 51 for more information on
setting up the Music System.
Dugan Music System
The Dugan Music System is a soft-gating or ducking system with its threshold set by
an audio side-chain, typically from a mic measuring the ambient sound level. Each
channel has a 2:1 expansion ratio below the floating threshold. There are three Music
System Threshold inputs on the
AUDIO I/O 9–12 connector (channels 9–11) , one for each
group.
The Music System can also be used to duck an audience mix when the people on
stage talk, attenuating the sound of the PA in the room. Use an aux send of the stage
vocal mix to supply the threshold signal instead of a mic.
The following example ( Figure 1-2 ) shows how the Music System works with three
background vocalists.
• Frame 1 shows no one singing. The system keeps all channels at a low gain.
• Frame 2 shows one person singing. The system automatically fades his/her gain to
full, while the other two inputs stay low.
Figure 1-2 Function of the Dugan Music System
• Frame 3 shows a different person singing. The system automatically fades his/her gain
to full, while the previous singer’s mic and the other input stay low.
• Frame 4 shows two people singing together. The system automatically gives their
channels full gain, while the other input stays low.