New method for adaptive echo cancellation in communication systems
The advent of packetized audio transmission system has resulted in challenging requirements for echo cancellation technology.One key aspect of this technology is the need to estimate,quickly and accurately,the delay in an echo path in the transmission media.Delay estimation based on direct applicati...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2007-01-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/74658209/ |
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| _version_ | 1841537429909012480 |
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| author | ZHU You-lian1 LU You-hong2 SHI Guo-dong1 |
| author_facet | ZHU You-lian1 LU You-hong2 SHI Guo-dong1 |
| author_sort | ZHU You-lian1 |
| collection | DOAJ |
| description | The advent of packetized audio transmission system has resulted in challenging requirements for echo cancellation technology.One key aspect of this technology is the need to estimate,quickly and accurately,the delay in an echo path in the transmission media.Delay estimation based on direct application of cross-correlation has poor performance and high implementation cost for the echo cancellation.A new method was presented in this paper.Input signals are bandpass filtered,downsampled,and cross-correlation function is computed via using the whitened signals.Theoretical analysis and experiment results show that the new delay estimation has resulted in higher performance and lesser computation cost than the traditional delay estimation.This method has a broad application in communication systems. |
| format | Article |
| id | doaj-art-17837744ab234ad5b7ee8006fd6b6705 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2007-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-17837744ab234ad5b7ee8006fd6b67052025-01-14T08:35:56ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2007-01-01677274658209New method for adaptive echo cancellation in communication systemsZHU You-lian1LU You-hong2SHI Guo-dong1The advent of packetized audio transmission system has resulted in challenging requirements for echo cancellation technology.One key aspect of this technology is the need to estimate,quickly and accurately,the delay in an echo path in the transmission media.Delay estimation based on direct application of cross-correlation has poor performance and high implementation cost for the echo cancellation.A new method was presented in this paper.Input signals are bandpass filtered,downsampled,and cross-correlation function is computed via using the whitened signals.Theoretical analysis and experiment results show that the new delay estimation has resulted in higher performance and lesser computation cost than the traditional delay estimation.This method has a broad application in communication systems.http://www.joconline.com.cn/zh/article/74658209/adaptive filteringdelay estimationmulti-rate samplingecho cancellation |
| spellingShingle | ZHU You-lian1 LU You-hong2 SHI Guo-dong1 New method for adaptive echo cancellation in communication systems Tongxin xuebao adaptive filtering delay estimation multi-rate sampling echo cancellation |
| title | New method for adaptive echo cancellation in communication systems |
| title_full | New method for adaptive echo cancellation in communication systems |
| title_fullStr | New method for adaptive echo cancellation in communication systems |
| title_full_unstemmed | New method for adaptive echo cancellation in communication systems |
| title_short | New method for adaptive echo cancellation in communication systems |
| title_sort | new method for adaptive echo cancellation in communication systems |
| topic | adaptive filtering delay estimation multi-rate sampling echo cancellation |
| url | http://www.joconline.com.cn/zh/article/74658209/ |
| work_keys_str_mv | AT zhuyoulian1 newmethodforadaptiveechocancellationincommunicationsystems AT luyouhong2 newmethodforadaptiveechocancellationincommunicationsystems AT shiguodong1 newmethodforadaptiveechocancellationincommunicationsystems |