Fast Fourier transform (FFT) is the main algorithm for harmonic analysis in electric power system, but when there is the decaying DC component in input signal, FFT algorithm will have higher error.
快速傅里叶变换(FFT)是电力系统进行谐波分析的主要算法，但当输入信号中含有衰减直流分量时，FFT算法会产生较大的误差。
Fudan University In this paper a 8031 single-chip system for FFT is described. Some results of real-time display and analysis of ultrasound Doppler flow sonography using this system are also given.
本文介绍一种实现傅立叶快速变换的8031单片系统，并给出该系统实时显示和分析超声多普勒血流信号声谱的一些结果。
It Contains system construction, measurement environment requirement, FFT application in microcomputer, and spectrum analysis for vibrations in practical engineering.
系统的构成、对测试环境的要求、FFT在微型计算机上的实现，以及在实际工程中振动频谱分析的应用。
It Contains system construction, measurement environment requirement, FFT application in microcomputer, and spectrum analysis for vibrations in practical engineering.
系统的构成、对测试环境的要求、FFT在微型计算机上的实现，以及在实际工程中振动频谱分析的应用。
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