A study of background noise cancellation in communication systems by adaptive filters
碩士 === 逢甲大學 === 自動控制工程所 === 93 === Abstract The purpose of this study lies in setting up an active background noise cancellation system which can be applied to the communication apparatus. Generally speaking, phenomena of noise and echo are factors to influence communication quality. This study is...
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ndltd-TW-093FCU051460392015-10-13T10:34:09Z http://ndltd.ncl.edu.tw/handle/75648268425729623194 A study of background noise cancellation in communication systems by adaptive filters 應用適應性濾波器於通訊問題之背景噪音消除的研究 Jia-Ming Chang 張家銘 碩士 逢甲大學 自動控制工程所 93 Abstract The purpose of this study lies in setting up an active background noise cancellation system which can be applied to the communication apparatus. Generally speaking, phenomena of noise and echo are factors to influence communication quality. This study is mainly to cancel background noise of the calling party. So the listener will not hear background noise of the calling party and can hear the intact voice signal of the calling party. During the process of studying, we have used NLMS algorithm to cancel background noise of the calling party, and have used AVD to improve the voice signal''s distorted phenomenon that is made by using NLMS. Finally, with the digital signal processing technology we have realized active background noise cancellation system on the hardware of the fixed DSP development board, such as C5416DSK, etc.. We have set up active background noise cancellation system in this study, which including the software and hardware. Our laboratory can base on this system to do the deeper study continuously in the study direction of the noise cancellation in the future. Xiao-Wu Chen 陳孝武 2005 學位論文 ; thesis 64 zh-TW |
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碩士 === 逢甲大學 === 自動控制工程所 === 93 === Abstract
The purpose of this study lies in setting up an active background noise cancellation system which can be applied to the communication apparatus. Generally speaking, phenomena of noise and echo are factors to influence communication quality. This study is mainly to cancel background noise of the calling party. So the listener will not hear background noise of the calling party and can hear the intact voice signal of the calling party. During the process of studying, we have used NLMS algorithm to cancel background noise of the calling party, and have used AVD to improve the voice signal''s distorted phenomenon that is made by using NLMS. Finally, with the digital signal processing technology we have realized active background noise cancellation system on the hardware of the fixed DSP development board, such as C5416DSK, etc.. We have set up active background noise cancellation system in this study, which including the software and hardware. Our laboratory can base on this system to do the deeper study continuously in the study direction of the noise cancellation in the future.
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Xiao-Wu Chen |
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Xiao-Wu Chen Jia-Ming Chang 張家銘 |
author |
Jia-Ming Chang 張家銘 |
spellingShingle |
Jia-Ming Chang 張家銘 A study of background noise cancellation in communication systems by adaptive filters |
author_sort |
Jia-Ming Chang |
title |
A study of background noise cancellation in communication systems by adaptive filters |
title_short |
A study of background noise cancellation in communication systems by adaptive filters |
title_full |
A study of background noise cancellation in communication systems by adaptive filters |
title_fullStr |
A study of background noise cancellation in communication systems by adaptive filters |
title_full_unstemmed |
A study of background noise cancellation in communication systems by adaptive filters |
title_sort |
study of background noise cancellation in communication systems by adaptive filters |
publishDate |
2005 |
url |
http://ndltd.ncl.edu.tw/handle/75648268425729623194 |
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