期刊名称：International Journal of Advanced Research in Computer Engineering & Technology (IJARCET)
印刷版ISSN：2278-1323
出版年度：2013
卷号：2
期号：11
页码：2941-2943
出版社：Shri Pannalal Research Institute of Technolgy
摘要：Acoustic echo is the noise which is created when sound waves are reflected by the wall or other things of the room. This acoustic echo get mixed with the original speech signal and degrades the quality of speech signal. The main objective is the cancellation of this acoustic echo for better communication and to provide an echo free environment. There are so many techniques which are used for removing of acoustic echo from the original speech signal. Different type of filters are used in each technique for filtering echo signal from speech signal. In this paper, we are making a review of some techniques which are related to removing echo signal in different type of environments.
