Axis 213 PTZ User Manual page 28

AXIS 213 - Setup
28
The noise canceller threshold value can be set to High, Medium High, Medium low
and Low. A lower threshold will accept most of the audio to pass. Only the weakest
background noise will be reduced. A higher threshold will make the noise canceller
act on even stronger background noise. At the maximum level High, there is a risk of
reducing useful audio as well.
There is a trade-off between noise canceling and sound quality. In other words,
increasing the noise canceller attenuation deteriorates sound quality. Adjust the
threshold and the attenuation to an optimum by listening and changing the levels.