本論文針對與圓剛公司合作的例子,討論實作過程中,所遇到的回音問題,以及解決的方法。並針對不同的回音消除法比較品質、電腦效能等等。PSTN經由Media Gateway透過USB介面連接電腦,使Android充當一台網路電話總機,而從遠端收到聲音封包經由Media Gateway傳送至PSTN類比話機,遠端卻會聽見自己的回音。而在處理回音的過程中,回音在各作業系統上的行為有稍有些不同,本論文會分析不同的處理方式。
In this thesis, to discuss implementation process about echo problems encountered and solutions with the AVerMedia example. Using different echo cancellation method that compare computer performance. Media Gateway PSTN via a USB connector, put the computer to use them is like a voice attendant. Voice packets received from the remote Media Gateway. Remote will hear its echo. Echo in the behavior of the operating system have little bit different, this paper analyzes the different treatments.