how to find the phase shift and amplitude ratio

vtaela

i am looking for the amplitude ratio and phase shift of this graph? could someone explain me how to obtain these results from this type of graph?


thank you

Naty1

See the first diagram here regarding phase:

http://en.wikipedia.org/wiki/Phase_(waves)


There is no universal 'amplitide ratio'.....you have to explain what you seek....
Some alternatives are here:

http://en.wikipedia.org/wiki/Wave_amplitude

vtaela

i have already seen these but still i have no clue for the specific graph. i have more complicated graphs but not as complicate as this one.. i cant the results for this one..

if any one has further instruction please post here. thank you

olivermsun

Take the Fourier transforms of the input and output and compute the cross-spectrum?