HUAWEI VPM220W Microphone Array
User Guide
3 Mono and Stereo
Issue 01 (2013-9-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
10
3
Mono and Stereo
About This Chapter
The VPM220W can work in mono or stereo mode. The VPM220W's audio collection
capabilities when working in mono or stereo mode are described as follows:
In mono mode, the VPM220W collects audio data and transmits it to a
videoconferencing endpoint. The endpoint then processes the received audio data and
sends it through one audio channel to the peer site.
In stereo mode, the VPM220W collects audio data and transmits it to a
videoconferencing endpoint. The endpoint then processes the received audio data and
sends it through both the left and right audio channels to the peer site.
Stereo mode enables listeners to distinguish the direction from which the sound comes,
thereby delivering a more true-to-life experience. A single VPM220W can work in stereo
mode.
3.1 Mono and Stereo Configurations
You can configure the mono and stereo modes for the VPM220W on a videoconferencing
endpoint.
For details about configurations, see
Table 3-1
.
Table 3-1
Channel mode configurations
Channel Mode
Audio Protocol (Configured on a Videoconferencing
Endpoint)
Mono mode
G.711A/U, G.722, G.728, or G.7221C (supported at all rates)
AAC-LD or HWA-LD (Mono mode is enabled.)
Stereo mode
AAC-LD or HWA-LD (Stereo mode is enabled.)
