20来个过滤器编程源码大集合,需要了解过滤器编程的和COM编程的,这是必读基础教程,从事相关开发如播放器软件、播放器控件、转场效果、图象特殊处理等等，都需要跟这方面的知识打交道。-20 months to filter programming source large pool filters need to understand programming and COM programming. This is mandatory basis and guidance in the develo

通过direct sound控制声卡，可以实现多声卡控制。用于多声卡广播(control sound card by direct sound,can use broadcast software.)