ClearOne AP400 - Manual (Page 24)

Installation ~ LCD Programming 20
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Off Attenuation
This sets the amount of level reduction applied to a microphone when it is off (Figure
2.10, above). Low values increase the amount of echo and reverberation allowed into
the system. If the value is set high, you might be able to hear the microphones gate
on and gate off as the background noise is reduced. The adjustment range is from
0–50dB in 1dB increments. Default setting is 12dB. As more microphones are added
to the system, the off attenuation should be adjusted toward 50 (high).
Hold Time
This feature determines the length of time a microphone remains on after the
microphone audio level drops below the gate ratio (see Figure 2.11). Values range
from 0.1–8.0 seconds in one-tenth of a second increments. Default setting is 0.3.
Setting this value too low might cause the microphones to gate on and off too
frequently during brief pauses of speech. However, setting this value too high might
cause too many microphones to be on at one time.
Figure 2.10. Off attenuation
Figure 2.11. Hold time