AXIS 233D - Audio 25
Advanced Audio
Advanced audio settings can improve audio quality by speech filtering and echo and noise cancellation.
When enabled the speech filter reduces noise by filtering out all the frequencies below 100HZ and above 3500 Hz. This improves the sound quality if a person is close to the microphone when talking and will reduce background noises.
Enable echo cancellation to reduce acoustic echoing that can be caused by audio coming from a speaker being captured by a microphone.
Noise cancelling is a way of reducing the background noise if the microphone, for example, is set up in a noisy environment and you are only interested in hearing a person who is talking close to the microphone. The noise canceller attenuation produces maximum noise reduction when set to 18dB of attenuation. Optimize the sound quality by listening to the sound and adjusting the attenuation level as required.