How to find the phase shift and amplitude ratio

AI Thread Summary
To determine the amplitude ratio and phase shift from a graph, one must analyze the specific characteristics of the graph in question. There is no universal method for calculating amplitude ratio, as it varies based on the context and type of graph. The discussion suggests using Fourier transforms of the input and output to compute the cross-spectrum for more complex graphs. Participants are encouraged to provide detailed instructions or examples to clarify the process. Understanding these concepts is essential for accurate analysis of waveforms.
vtaela
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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?
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thank you
 
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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
 
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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
 
Take the Fourier transforms of the input and output and compute the cross-spectrum?
 
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