Dugan Models E-1 and E-1A User Guide
8
When one person talks at a time, the Dugan Speech System rapidly fades that mic’s
gain up and the others down. When the speaker pauses, that mic fades down and the
others up, so the gain of all mics sums to equal that of one mic at full gain. When
the next person talks, the system fades that mic’s gain up and the others down. The
result sounds like passing one mic among several speakers.
When multiple people talk at once, the gain is shared among active mics. All mics
sound normal when used but there is no change in ambience, noise buildup, or feed-
back.
While people are talking, use the console’s faders to set appropriate relative levels for
each mic channel. You can leave the faders up when the mics are not used because
the Dugan Speech System cues the mics up when needed.
Figure 1-1 shows four snapshots of the Dugan Speech System in action with three
mics.
Figure 1-1
Dugan Speech System
Frame 1
: No one is speaking and the sound levels at all mics are low. The system fades
all channels to a medium gain that sums to one mic at full gain.
Frame 2
: One person speaks alone. The system automatically fades their gain to full,
and turns the other two inputs down.
Frame 3
: The first person finishes speaking and a second person begins. The system
automatically fades the new speaker’s input gain to full, and turns the other two down.
Frame 4
: Two people speak simultaneously. The system automatically shares the
gain between them, and turns the other input down.
Sound
No one speaking
Mic 2 speaking
Mic 3 speaking Mics 2 and 3 speaking
at mics (dB)
40
50
60
70
Resulting
automix
gains (dB)
-30
-20
-10
0
1
2
3
4
Summary of Contents for E-1
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