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HD PTZ Camera User Manual
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5.4 Audio
5.4.1
Audio Encoding
Picture 5-15 Audio encoding
Sampling Rate: It means the sampling times to sound signals by the audio-recording
device in 1 second. The higher the sampling rate is, the more real and natural the sound
reproduction will be.
The default option is “8k”.
Encoding Volume: Drag the slide bar to adjust audio encoding volume, i.e. audio input
volume. The larger the value is, the higher the voice will be.
Encoding Format: Select audio encoding format from the dropdown list, by default G.711
a (PCMA).
Echo Cancellation: Select the checkbox to cancel noises in the input audio and thus
improve the audio quality.
5.4.2
Audio Decoding
Picture 5-16 Audio decoding
Decoding Volume: Drag the slide bar to adjust audio decoding volume, i.e. audio output
volume.
Audio Mixing Recording: Select the checkbox to enable audio mixing recording function,
which is valid only when “ADPCM” is selected.
Note: When “Audio Mixing Recording” is disabled, there will be only heard sound without
calling sound during video recording; when it is enabled, there will be both heard and calling sound
during video recording.
5.5 PTZ
The camera is equipped with digital PTZ, which is suitable for wide range surveillance and enlarges the
field of view. User can control PTZ via web client.