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3.6.4 Audio
The network camera can transmit audio to other clients using an external microphone and can
play audio received from other clients by attaching a speaker. The Setup page has an additional
menu item called Audio, which allows different audio configurations, such as full duplex and sim-
plex.
•
Audio Setting:
- Enable audio:
Check the box to enable audio in the video stream.
- Compression type:
Select the desired audio Compression format be-
tween G.711
µ
-law or G.711 a-law.
- Sample rate:
Select the required Sample rate (number of times per
second the sound is sampled). The higher the sample rate, the bet-
ter the audio quality and the greater the bandwidth required.
- Sound bit rate:
Depending on the selected encoding, set the de-
sired audio qual- ity (bit rate). The settings affect the available
bandwidth and the required audio quality.
•
Audio Input:
Audio from an external line source can be connected to
the STEREO Jack I/O of the network camera.
- Input:
User can select amplifier between Internal Amp or External
Amp.
- Input volume:
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 network camera.
- Mute:
User can disable the input audio transmission by checking
the box.
•
Audio Output:
- Enable full duplex:
Check the box to enable Full Duplex mode.
This means that you can transmit and receive audio (talk and listen)
at the same time, without having to use any of the controls. This is
just like having a telephone conversation. This mode requires that the
client PC has a sound card with support for full-duplex audio.
