I have a pressure signal at two locations
(r=1 and r=1.3). I found the Power spectral density (PSD) and the Root Mean Square (RMS) of the siganl. My question is why at
r=1 the PSD is higher than the PSD at
r=1.3 while the RMS at
r=1 is less than RMS at
I mean is there any relation between PSD and RMS of the signal?