Comb filter to remove noise?

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Dick Rusell
Dick Rusell 2014-9-25
回答： Rick Rosson 2014-9-25
I'm supposed to make a comb filter to remove the noise at 120Hz and 240Hz, with the sampling frequency at 960Hz but I'm not sure where to start.
Here is the signal

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Rick Rosson
Rick Rosson 2014-9-25

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