As to steady state phenomena, the traditional signal analysis tool FFT is used for harmonic analysis and flicker.
并利用快速傅立叶变换方法对谐波、闪变和纯正弦波等稳态现象进行分析。
Based on the groove testing system, we induced the spectral analysis which is the signal analysis tool into evaluating the grooves, and used it as an evaluating standard.
在槽型优选测试系统实验的基础上，我们引入了信号分析工具——功率谱分析，作为评估槽型优劣的一个标准。
Discrete Cosines Transform (DCT) is an effective tool for analysis image signal.
离散余弦变换是分析图像信号的有效工具。
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