【作者】 俞缙； 张迪； 赵维炳； 李晓昭； 关云飞；

【Author】 Yu Jin;Zhang Di;Zhao Weibing;Li Xiaozhao;Guan Yunfei;

【机构】 南京水利科学研究院岩土工程研究所； 江苏省工程咨询中心； 南京大学地球科学系；

【摘要】 研究采用小波变换法对信号进行滤波、消噪的原理和过程,运用小波滤波方法对仿真信号进行处理,并将小波滤波、消噪法引入岩石声学信号处理领域中。结果表明,采用小波滤波、消噪的方法是依据信号分解结果的频谱特性进行选择性的滤波和消噪,能充分保留信号本身所固有的非平稳特征,具有灵活、有效的特点,是一种更好的石声学信号滤波、消噪法。更多还原

【Abstract】 The principle and the course of signal filtering and denoising using wavelet transformation method are described,and simulative signals with wavelet are analyzed,and the filtering and denoising method of wavelet is introduced to process the signals in rock acoustics research field.The results show that method of wavelet are effective,while the method based on wavelet transformation,which filters signals and eliminates the noise selectively according to spectrum character of decomposition signal,is the optimal method that can sufficiently keep the non-stationary character inhered in signal and provide well flexibility and affectivity and feasibility in filtering and denoising of rock acoustic signals.更多还原