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 can't the results for this one..

if anyone has further instruction please post here. thank you

 

[olivermsun]

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