Axis 26123R1, Интегратор и руководство пользователя, Страница: 31 / 77

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AXIS 282/AXIS 282A - Audio (AXIS 282A only)
If there are problems with the sound input being too low or high, it is possible to adjust the
input gain for the microphone attached to the AXIS 282A.
Audio Output
If the sound from the speaker is too low or high it is possible to adjust the output gain for
the active speaker attached to the AXIS 282A.
When satisfied with the settings, click Save , or click Reset to revert to the previously saved
settings.
Advanced Audio Settings
The Advanced Quality Settings allows you to tune the audio input to suit your
environment.
Enable speech filter
improves the sound quality if using a microphone that is placed close
to the person talking and can also help reduce background noise. The filter cuts the lowest
and the highest frequencies. The bypass frequency range is approximately 250Hz to
3700Hz (measured at -10dB cut-off break points).
Enable echo cancellation can reduce the feedback generated when using full duplex. If
sound distortion is encountered, turning echo cancellation off may improve the sound
quality.
Noise canceling is a way of reducing the background noise when there is no useful audio
present. A typical application could be when there a noisy environment and you are only
interested in hearing the sound when someone is speaking close to a microphone. There are
two adjustable parameters available to optimize this function:
• Noise canceller threshold value
•
Noise canceller attenuation