混杂频率;
Analysis on Frequency Aliasing in the Sampling of Lowpass and Bandpass Signals
低通和带通信号采样的频谱混叠分析
Author suggests that increasing number of measurement taps and prolonging sampling time and enhancing sampling frequency will decrease signals aliasing and leakiness.
并提出在进行压力脉动试验时,应增加测点、延长采样时间、提高采样频率以避免信号遗漏和信号混叠等现象的发生。
Naturally, wavelet transform is a band-pass filter, which cannot effectively extract harmonics signal of different frequency at discretion. Moreover, wavelet transform has the disadvantage of spectrum aliasing leakage phenomenon.
小波变换的实质是一个带通滤波过程,不能有效提取出任意频率的谐波信号,会出现频谱混叠现象。
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