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Dugan Model E-3 User Guide Dugan Control Panel

Dugan Music System and Gain Limiting

These functions require the physical or software Dugan Control Panels.

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 (MST IN 1–3) on the auxiliary connector, one for each group.

NOTE: The MST IN connections are only used for the Music System because the Speech System

has no threshold.

Consider the following before placing the sensing mic:

• Place the sensing mic in the same area, and pointing in the same direction as the

program mics.

This samples, as closely as possible, the ambient sound picked up by the program

mics.

• Use the same type of mic for program and sensing applications.

• Do not place the sensing mic close to an individual voice or instrument.

• Do not point the sensing mic at a pit orchestra.

• Do not put the sensing mic in the back of the house because of the time delay.

Patch the preamplified sensing mic to a MST IN (1, 2, 3) input on the auxiliary con-

nector. Typically, the direct output of a console input strip is used, with the mix bus-

es deselected. This input normally should be set to 10–15 dB more gain than the

program mic inputs.

Another use for the Music System is to duck an audience mix when the people on

stage talk. Rather than a mic, an aux send of the stage vocal mix supplies the thresh-

old signal.

How the Music System Works

The following example (

Figure 5-14) illustrates the function of the Music System 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 down.

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Dan Dugan Sound Design E Guide de l'utilisateur Page 47