Huawei TE40 Administrator's Manual page 69

HUAWEI TE40&TE50&TE60 Videoconferencing
Endpoint
Administrator Guide
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
Mono
Stereo
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.
Figure 5-2
works in stereo mode.
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.
Issue 01 (2013-09-30)
Table 5-5 describes each mode.
shows the application of left and right audio channels when a single VPM220
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.)
The default value is Horizontal.
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Audio Protocol
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
AAC-LD or HWA-LD when stereo mode is enabled
5 Microphone and Speaker
61