what's the differences between dB/Hz and Hz in the Power Spectral Density.
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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).
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/148450/image.jpeg)
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!| |
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/148452/image.jpeg)
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