Abstract: With the development of economy, many companies have established their own network video conference system. These network video conference systems are the original intention of working for them to bring convenience, but how many systems truly bring to their working convenience? With its reason, one of the most important problem is to pass the audio processing technology, resulting in a meeting during voice intermittently, can not hear clearly, the effect is not good, ultimately companies spend big price to buy enough of the system which can only be a vase. This paper is aimed at this phenomenon from the audio processing to address the root which causes this problem, finally through the test data, it indicates the effectiveness of the programme.

Key words: video conference, audio processing, DirectShow