me: I could actually explain it much more clearly, if less concisely, than I did in the post the idea is that "frequency" just means "how many times does something repeat itself in a given period of time?" to distinguish whether a signal is of frequency A or frequency B, you have to have enough data such that a signal of frequency A would repeat itself a different number of times than a signal of frequency B the amount of data you need (in terms of time) is the reciprocal of the difference of A and B; so if you want to be able to distinguish between 10 and 12 Hz signals, you need 1/(12-10) = 0.5 seconds of data Andrew: I see me: say you have 0.5 seconds of data, and you determine that it is 10 Hz
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me: I could actually explain it much more clearly, if less concisely, than I did in the post
the idea is that "frequency" just means "how many times does something repeat itself in a given period of time?"
to distinguish whether a signal is of frequency A or frequency B, you have to have enough data such that a signal of frequency A would repeat itself a different number of times than a signal of frequency B
the amount of data you need (in terms of time) is the reciprocal of the difference of A and B; so if you want to be able to distinguish between 10 and 12 Hz signals, you need 1/(12-10) = 0.5 seconds of data
Andrew: I see
me: say you have 0.5 seconds of data, and you determine that it is 10 Hz ( ... )
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