Using matlab programming, 512 frequency points using a variety of window functions mapping amplitude frequency characteristics.

用matlab编程, 采用512个频率点绘制各种窗函数的幅频特性.

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To facilitate testing system frequency characteristics, output amplitude frequency characteristics and waveform distortion.

为便于测试系统的频率特性, 要求输出幅频特性平和波形失真小.

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The amplitude frequency characteristics of self - excited vibration are analyzed by nonlinear vibration theory.

应用非线性振动理论,分析抽水蓄能电站产生自激振动时的幅频特性.

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