One of its more powerful attributes is the fact that any periodicities, or repeated patterns, in a spectrum will be sensed as one or two specific components in the cepstrum.
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会议-演讲主题：”经济的周期性和规律性。
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The subject of the speech: “Periodicities and regularities of the economy.
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我们需 要得到年波动率，通过将这个周期波动率乘上一年周期数的平方根。
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Annualizing the volatility is required, by multiplying this periodic volatility with the square root of the number of periodicities in a year.