Seismosoft | Earthquake Engineering Solutions

<t>Well,I truely appreciate your reply. But the Japanese scholar, OHSAKI Y., have obtained the relationship between Fourier Spectra and Power Spectra by Parseval's theorem(in the book named 'Introduction to the spectral analysis of ground motion', OHSAKI Y. gave people the transformation between the...

<t>In the SeismoSignal,we could transform Fourier Spetrum to Power Spetrum. When I input several kinds of time-history of the acceleration and see the amplitude of Fourier Spetrum and Power Spetrum, I was surprised to discover that the amplitude of Fourier Spetrum is noticeably greater than that of ...

<r>In the software of SeimoSignal, if we input the hisotory of acceleration, SeimoSignal could compute the Fourier and Power Spetrum. I am truely concerned about how SeimoSignal transforms the Fourier Spetrum into Power Spetrum. I am wondering if I could be offered the concrete formulas, for as far ...