User`s manual

7. Streaming
AirLive SD-2020 User’s Manual 71
7.5 Audio
- Transmission Mode
z Full-duplex (Talk and Listen simultaneously)
In the Full-duplex mode, the local and remote sites can communicate with each
other simultaneously, i.e. both sites can speak and be heard at the same time.
z Half-duplex (Talk or Listen, not at the same time)
In the Half-duplex mode, the local / remote site can only talk or listen to the other
site at a time.
z Simplex (Talk only)
In the Talk only Simplex mode, the local / remote site can only talk to the other
site.
z Simplex (Listen only)
In the Listen only Simplex mode, the local / remote site can only listen to the other
site.
z Disable
Select the item to turn off the audio transmission function.
- Server Gain Setting
z Input gain/Output gain
The audio gain values are adjustable from 1 to 6. The sound will be turned off if
the audio gain is set to “Mute”.
- Bit Rate
Selectable audio transmission bit rate include 16 kbps (G.726), 24 kbps (G.726), 32
kbps (G.726), 40 kbps (G.726), uLAW (G.711) and ALAW (G.711). Both uLAW and
ALAW signify 64 kbps but in different compression formats. Higher bit rate will let
higher audio quality and require bigger bandwidth.
- Recording to Storage
Select <Enable> from the drop-down menu to enable audio recording with videos into
SD card.
Click on <Save> to confirm the setting.