| 声-超声检测信号的消噪处理 |
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| 引用本文： | 艾春安,蔡笑风,尼涛,刘瑜.声-超声检测信号的消噪处理[J].噪声与振动控制,2010,30(6):145-148. |
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| 作者姓名： | 艾春安 蔡笑风 尼涛 刘瑜 |
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| 作者单位： | 西安第二炮兵工程学院研究生三队 |
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| 摘 要： | 声-超声检测信号中存在的大量系统和环境噪声,严重影响回波信号的读取。采用平均滤波和小波包变换的方法进行消噪。利用二阶Daubechies小波函数建立一小波包消噪模型,对信号进行分解重构。经过处理后,消噪效果比较明显,能更加完整地保留有用信息。
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| 关 键 词： | 声-超声 平均滤波 小波包 消噪 |
| 收稿时间： | 2010-2-5 |
| 修稿时间： | 2010-4-5 |
Noise Reduction of Acoustic-Ultrasonic Monitoring Signals |
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| AI Chun-an,CAI Xiao-feng,NI Tao,LIU Yu.Noise Reduction of Acoustic-Ultrasonic Monitoring Signals[J].Noise and Vibration Control,2010,30(6):145-148. |
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| Authors: | AI Chun-an CAI Xiao-feng NI Tao LIU Yu |
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| Affiliation: | (The Second Artillery Engineering College,Xi＇an 710025,China) |
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| Abstract: | There are much systemic and environmental noise in acousto-ultrasonic signals, which seriously affect the read of actual signals . So take the method of even filter and wavelet packet transform to reducing noises. Then, a wavelet noise reducing model was formed by the two-rank Daubechies wavelets function.The results show that after the processing noise can be removed obviously and the useful signals can be reserved compeletely. |
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| Keywords: | acoustic ultrasonic even filtering wavelet packet noise reduction |
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