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HUAWEI VP9050 Executive Video Terminal
User Guide
8 Video and Audio
Issue 03 (2011-12-10) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd
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8.1.6 Adjusting the Sampling Phase
When color distortion occurs in a picture on the screen, adjust the sampling phase.
To adjust the sampling phase, do the following:
Step 1 Choose Settings > Display > Sampling Phase.
Step 2 Set the sampling phase by moving the slider.
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8.2 Adjusting Audio Effects
You can adjust the audio effects, such as the audio input, sound effect, volume, and stereo.
For details about how to adjust the audio input, volume, and stereo, see 5.2 "Setting Audio
Parameters." This section only describes how to adjust the sound effect.
Choose Settings > Audio > Sound Effect, and then set the parameters listed in Table 8-4.
Table 8-4 Audio parameters
Parameter Description
Network jitter
This is a sound adjustment method. A higher network jitter
contributes to a better audio connectivity. In a conference, the lip
movements and voice of a speaker may not be synchronous. To
solve this problem, users can adjust the network jitter value.
When the terminal uses a wired network for video
communications, it is recommended that you use the default
value of this parameter.
Acoustic echo
cancellation
If echo cancellation is enabled, the terminal removes echo in the
audio input from the MIC1 and MIC2 interfaces using the echo
cancellation function.
If echo cancellation is disabled, the terminal does not remove
echo in the audio input from the MIC1 and MIC2 interfaces
using the echo cancellation function.
By default, this function is enabled.
Music mode
Enable: Ringtone is played on incoming calls.
Disable: The speaker of the terminal is muted.
Ringtone
After a ringtone is selected, the terminal plays the ringtone when
there is an incoming call.
Audio channel balance
This is used to adjust the balance of the left and right audio
channels in dual-audio-channel mode.