关键字: 数字语音, DIRECTSHOW , 组播
The Appliance Of Directshow In Digital Audio Room
Abstract
With the rapid increasing of Information Techalog,Educational methods with a new fashion are exhibited for us,the emergence of Multimedia Room is especially typical.Digital Room is the important part of Multimedia Room.Most of the Multimedia Room is relative to analogue systems somehow.they have many inevitable shortages in compare to the Digitial Room.Therefor ,the development of Pure Digital Room has very import theortical and pratical vaule.
The Pure Digital Room is design for Teaching requirment.it implement a simple voice
Chat system.The whole system is make up of five process: Capture,Pre-Process,Sending, Receiveing,Post-Process and play.with the Directshow Framework,what we need to do is just develop two filters for sending and receiving.
The Pure Digital Room has been conducted in foreign lanuage education successfully. With extending ,it can be used in WLAN ,Just like Tele-Education.But it still need more and more improvement.