Since remote video conferencing can eliminate time and space differences, you can achieve remote communication anytime and anywhere, reducing travel, communication costs and other expenses, therefore, the use of video conferencing is increasing, and everyone's requirements for video conferencing are getting higher and higher. For video conferencing, you may feel that it is more important to say video, but what I want to tell you today is equally important in video conferencing system: sound.

However, due to the current level of attention to audio products is not high, resulting in a very high probability of audio problems in the video conferencing process, and Xingu as a senior audio and video conferencing product experts, will also be a summary of the video conferencing audio problems encountered in practice, in order to quickly find the cause of the problem.

Large distortion.

wireless conference microphone for computer

The characteristics of the main distortion is that the sound is broken, hoarse, sharp and harsh, and serious will affect the clarity of the sound, softness, brightness, fullness and sense of scene.

There are many reasons for this distortion: for example, the sensitivity of the microphone is too high, improperly placed, with phantom power supply microphone power supply anomalies, mixing console level adjustment is too large, the adjustment of the equalizer is not appropriate, the impedance between the equipment does not match, etc., according to the problem can be adjusted accordingly.

High noise.

Noise will affect the clarity, softness and brightness of the sound, and will seriously mask the sound of the scene, there are two reasons for this situation.

1. local noise.

When the gain is too large, the use of automatic gain control method, impedance mismatch, will produce local noise. Of course, sometimes some functions in the conference software, such as noise reduction, mute and other functions open, if the conflict with the software, but also easy to produce noise.

2. The microphone "flutter" sound.

Microphone is the first link in the sound reinforcement system, its signal quality directly affects the entire sound reinforcement effect, so it should be based on the sound reinforcement effect, reproduction characteristics and the relative relationship between the sound sources to a reasonable choice and set.

For the sound of the speaker broken stronger, should choose the anti-pounce sound microphone.

Non-uniform frequency response, improper reverberation delay.

Tuning before the mixer, equalizer and other equipment is not debugged, resulting in signal levels too high or too low. In addition, direct connection of unbalanced outputs and equalized line inputs results in a drop in signal level.

The frequency is uneven.

This is related to the frequency indication and human factors, such as microphone pointing offset, excessive mid-frequency attenuation, microphone transmission line is too long, etc., will affect the clarity, hierarchy, fullness of sound reproduction.

In different meeting types, different environments, the requirements of the reverberation delay time is different, should be adjusted according to the acoustic characteristics of the reverberation delay parameters. Phase size affects the sense of time and listening time of reflections in the sound field reverberation.

Posted by: antonia at 09:25 AM | Comments (1) | Add Comment
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