【摘要】 介绍了小波变换的基本概念和特性。应用小波变换对岩石超声波检测信号进行了时频分析和处理。结果表明，该方法是分析处理具有时变谱特性的非平稳信号的一种有效方法。更多还原

【Abstract】 Concepts and characteristics of wavelet transform are described in the paper- The results derived from applying wavelet transform to perform time-frequency analysis and processing of rock ultrasonic testing signals show that the technique forms an effective one for analyzing and processing unstable signals of time- variation spectra.更多还原