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Full Menu Setup
3-2-5. Digital Zoom
> Mark ENABLE checkbox to activate the digital zoom.
> LEVEL selects the fixed digital zoom ratio. X1.0 is not digital zoomed.
3-3. Audio
> Mark ENABLE checkbox to activate the audio. Supports full duplex audio.
> COMPRESSION : Selects audio compression codec. μ-law is used
primarily in North
America and a-law used in most other countries outside North
America. G.71
1 μ-law
tends to give more resolution to higher range signals
while
G.711
a-law
provides
more quantization levels at lower signal levels.
> SAMPLE RATE : Fixed at 8KHz by G.711.
> BITRATE : Fixed at 64Kbps by G.71
1,the international standard for encoding wired-
telephone audio.
> Mark INPUT MUTE checkbox to mute the input from audio-in.
> INPUT VOLUME : Adjusts the volume by the input signal level. -0.5dB reduces the
volume about -6%, 0.0dB bypasses the signal
wi
thout adjusting the volume and
3.0dB increases the volume about +41%.
> Mark ENABLE OUTPUT checkbox to activate the audio. Supports full duplex audio.
> Mark OUTPUT MUTE checkbox to mute the output to audio-out.
> OUTPUT VOLUME : Adjusts the volume by the output signal level. -0.5dB reduces
the volume about -6%, 0.0dB bypasses the signal
wi
thout adjusting the volume and
3.0dB increases the volume about +41%.
> Audio auto activation on ONVIF access If the checkbox is marked, Audio auto activation
after reset or rebooting the camera is compatible to ONVIF.
