ClearOne comm AP400 operation manual Off Attenuation, Hold Time

20 Installation ~ LCD Programming

Figure 2.10. Off attenuation

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).

Figure 2.11. Hold time

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.

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