HUAWEI VPM220W Microphone Array
User Guide
3 Mono and Stereo
Issue 01 (2013-9-15)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
11
3.2 Mono and Stereo Collection
Mono Mode
When VPM220Ws are cascaded or a VPM220W works in mono mode, all the microphones in
the VPM220W collect sounds from all directions. The VPM220W then transmits the best
quality sounds collected by one of the microphones to the videoconferencing endpoint.
Stereo Mode
Figure 3-1
shows the application of the left and right audio channels when one VPM220W is
working in stereo mode.
Figure 3-1
Sound collection
L: This microphone is used to collect sounds for the left audio channel.
R: This microphone is used to collect sounds for the right audio channel.
N: This microphone is not used.
In this figure, the letters
L
,
R
, and
N
indicate the three VPM220W microphones.
