Audio Problem Solution Of Video Conference System
May 18, 2018
Audio Problem Solution Of Video conference system
With the increasing use of videoconferencing, the demand for videoconferencing is getting higher and higher. For videoconferencing, everyone will say that video is more important than it really is. In videoconferencing, audio is the most important thing. The exchanges are mainly achieved through audio conversations or discussions. As long as there are pictures in the video, if you can clearly express the best performance, but the most convincing certainly is audio, with good video and ordinary audio than with good audio Normal video is much more useful. Of course, due to the fact that the emphasis on audio products is not very high, the probability of audio problems during the video conference is high.
(A) The sound during the audio conversation is light
This is mainly because the voice from the other side is very light. It takes a lot of effort to understand what the other party is talking about. The problem usually lies in the collection of sounds. This party can test its own speakers or horns first, and use a local computer to play tests to see if the volume of the play is large enough. If it is determined that the audio frequency of the party is normal, you can basically judge the problem. In the upstream, generally can adjust the device input (recording) volume size, which requires special signature, is to adjust the recording volume, the actual operation is often a lot of people, will only adjust the speaker's voice, and will not use the recording volume size adjustment.
(B) The noise during audio conversation is relatively large
The size of the noise mainly has two aspects. First, during the conference, there may be noise sources such as fans and air conditioners. However, the general conference audio pickup products do not have special noise processing, resulting in noise being picked up. Secondly, it is the audio uplink. The volume of the recording is too large, resulting in a slight movement with large sound collection and noise. Of course, sometimes there are some functions in the conference software, such as noise reduction and squelch. In the event of a conflict with the software, it is also likely to cause noise.
(C) Can hear their own voice during the video conference
During videoconferencing, it was found that they could hear their own voices and they came back. For example, when many mobile phones use hands-free hands, they are also prone to such situations. This is mainly because audio equipment is not selected. Although current videoconferencing software has echo cancellation function, none of them can really eliminate echoes, so it needs rear-end audio equipment to match. For example, Ericsson's omnidirectional microphone requires its own echo cancellation function. In order to ensure that the other party's voice comes out of the horn, it will not be transmitted from the product's pickup part, resulting in an echo. If the conditions are limited, the sensitivity of the audio input device can be reduced, the distance between the pickup device and the speaker, the power amplifier can be increased, the sound can be reduced, and the echo can be improved by the distance effect.
