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1f噪声1Hz归一化的理解



大家好:

            有个问题请教一下,我最近在看Art Kay写的《运算放大器噪声优化手册》这本书,其中2.4章节在计算宽带噪声时提到了1Hz归一化1/f噪声,如下图所示。

我不太明白为什么在计算宽带噪声的时候涉及到了1/f噪声?即使是计算1/f噪声,为什么要做1Hz归一化处理,处理的物理意义何在?我想了很久还是不懂,望高手答疑解惑!谢谢!