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Suppose I have a signal that is the sum of sin waves of varying frequencies. That is, the signal S(x) = Sin(ax) + Sin(bx) + ... where {a,b,...} are integers.

Is there some kind of circuit or other mechanism that could multiply the frequency of the signal by some scalar λ? In general, I do not know what the signal is, or what the constants {a,b,...} are.

I've read about circuits that multiply the frequency of a signal, but everything I saw only dealt with multiplying the frequency of a simple signals of the form a*Sin(b*x) with a,b real numbers. I cannot tell whether these types of circuits generalize to more complex signals with unknown frequency.

I do not have a background in electrical engineering, so forgive me if my terminology is wrong. Let me know if my question is unclear. Thanks everyone.

Charles

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# Multiplying a complicated frequency

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