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在对信号进行连续小波变换的过程中,尺度系数的选择很大程度上受到基小波时频窗宽度的制约。本文采用对基小波先行一次尺度伸缩的方法,使尺度系数的确定具有较大的灵活性。对模拟信号的连续小波变换运算中验证了此方法的可行性。
In the process of continuous wavelet transform of signal, the selection of scale coefficient is largely restricted by the width of time-frequency window of the basis wavelet. In this paper, we use the method of first scale scaling of basic wavelet to make the scale coefficient more flexible. The feasibility of this method is verified in the continuous wavelet transform of analog signal.