參考資料/網站：

http://lcavwww.epfl.ch/~prandoni/dsp/echo/echo.html

http://www.iec.org/online/tutorials/echo_cancel/index.html

http://www.ind.rwth-aachen.de/research/echocancel/ec.html#demos

http://www.dspalgorithms.com/products/echo.html

http://msdn.microsoft.com/library/

C++ 教學手冊     洪維恩著 / 博碩文化

Visual C++ 24小時自學手冊   原著 Micley Williams 翻譯 詹佩珊

C++ How To Program 4/e Marcia J .Horton