HUAWEI TE40&TE50&TE60 Videoconferencing
Endpoint
Administrator Guide
5 Microphone and Speaker
Issue 01 (2013-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
61
Using the Stereo Mode
To obtain better stereo effect, configure the mode for cascading VPM220s and their positions
based on the actual conditions in your conference room.
Choose
Advanced
>
Settings
>
Conference
>
Advanced
and set the VPM220 mono or
stereo mode.
Table 5-5
VPM220 mono and stereo modes
Mode
Audio Protocol
Mono
G.719, G.729A, G.711A/U, G.722, G.728, and G.7221C (at
any rate)
AAC-LD or HWA-LD when mono mode is enabled
Stereo
AAC-LD or HWA-LD when stereo mode is enabled
When multiple VPM220s are cascaded or when a single VPM220 works in mono mode, all
the microphones in the VPM220 collect sounds. The VPM220 automatically transmits to the
endpoint the best quality sound collected by one of the microphones.
shows the application of left and right audio channels when a single VPM220
works in stereo mode.
L: The microphones are used to collect sounds for the left audio channel. R: The microphones are used
to collect sounds for the right audio channel. N: No microphone is used. (The Huawei logo on the
VPM220 should point to the display device.)
Figure 5-2
A single VPM220 working in stereo mode
To set the mode for cascading VPM220s:
Step 1
Choose
Advanced
>
Settings
>
Audio
.
Step 2
Based on the actual conditions in the conference room, set
Microphone array position
to
Horizontal
or
Vertical
.
The default value is
Horizontal
.