Filter
Top Products
20
AXIS 214 PTZ
Enable echo cancellation reduces acoustic echoing (feedback) if sound from the speaker is captured by the
microphone.
Noise cancellation is a way of reducing the background
noise when there is no useful audio present. A
typical application could be that the camera is set up in a noisy environment, and you are only interested in
hearing the sound from the AXIS 214 PTZ when someone is speaking close to the microphone. There are
two adjustable parameters available to optimize this function:
• Noise canceller threshold value
• Nois
e canceller attenuation
When the incoming sound is louder than the threshold, it
will pass without any changes. When lower than
the threshold, the incoming sound will be reduced by a certain attenuation factor. The threshold level
should be set higher than the background noise, but lower than the useful audio.
The nois
e canceller threshold value can be set to High, Medium High, Medium low and Low. A lower
threshold will allow most of the audio to pass. Only the weakest background noise will be reduced. A higher
threshold will make noise cancellation act on even louder background noise. At the maximum level High,
there is also a risk of reducing useful audio.
There is a trade-off between noise cancellation 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.