透過您的圖書館登入
IP:3.17.157.68
  • 學位論文

網路電話閘道器回音消除之研究與設計-以圓剛Media Gateway為例

The Research and Design of Echo Cancellation in Gateway (A Case Study of AVerMedia)

指導教授 : 黃紹華
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


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。

並列摘要


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.

參考文獻


[1] Eberhard Hansler, “Acoustic Echo Control” , IEEE Signal Processing Magazine, July 1999, pp.42-69.
[2] Farhang Boroujeng, Adaptive Filters Theory and Applications. West Sussex, England, John Wiley & Sons,1998.
[3] Peyton Z. Peebles Jr, Probability Random Variables and Random Signal Principle 4th edition , McGraw-Hill, 2001.
[5] 王凱生, ”動態式最小均方演算法於回音消除之研究與實作”, 國立台北科技大學碩士學位論文, 2007 年 7月
[6] What is Digital Audio?

延伸閱讀