... Finite sum formula 有限项和公式 Finite-duration signals 有限长信号 First difference 一阶差分 ...
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文中还给出了由幅谱重建混合相位有限长信号的新结果。
In addition, a new result for reconstruction of mixture phase signal from FT spectral magnitude is obtained.
小波分析有良好的时-频局部化性能，现被广泛应用于数字信号和图像处理等领域，但其在处理有限长信号时的实时性不太理想。
Wavelet analysis is widely used in digital signal and image fields because of its good time frequency localization feature, but it doesn't do well in timely processing of long signals.
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