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提出了一种基于时频分析的频窗参数确定方法，这种方法在把超声信号展开成窄带分解信号时不需要超声频带的先验知识．给出了将此算法用于不锈钢裂缝产生的超声信号的处理结果．
A frequency-window parameter determination method based on time-frequency analysis is proposed. This method does not require a priori knowledge of the ultrasonic frequency band when the ultrasonic signal is expanded into a narrow-band decomposition signal. The results of the ultrasonic signal processing using this algorithm for stainless steel crack generation are given.