Accordimg to the results of wave form and frequency domain analyses of pressure fluctuation signals, characteristics of pressure fluctuation at different space locations were discussed.
根据压强脉动信号波形和频域的分析结果，研究了三相流化床不同空间位置压强的脉动特征。
The frequency and amplitude and phase of discrete spectral lines can be calculated through two DFT analyses one after another, which is one complex time domain signal analysis virtually.
相继两次DFT分析（实为一次复时域信号分析）可精确确定诸分立谱线的频率、幅度与相位。
This paper describes the essential concept and modelling of video signal in 3-d frequency domain, and from the point analyses the feathers of the brightness-colour separation filter.
本文阐述了电视信号三维频域的建立及其基本概念，并从三维频域的角度对亮色分离滤波器特性进行了分析。
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