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what's the differences between dB/Hz and Hz in the Power Spectral Density.

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Kathleen on 30 Mar 2015
Edited: Kathleen on 31 Mar 2015
Dear colleagues,
I'm comfused with a smaller issue with Power Spectral Density. In many papers, scientists always use dB in the y axis lable (see Fig.1).
But the y lable is dB/Hz (see Fig.2) in the examples of PSD documentation. plz give me some hints how to realize their differences! Thank you very much!| |

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