ESS210B
Prof. Jin-Yi Yu
Response
Function
qTime filters are the same as the
data window we have discussed earlier.
qBy performing Fourier transform, we know that:
qThe ration between the filtered and original power spectrum is called the “response function”:
qIf R(w)=1 č the original amplitude at frequency w is kept.
R(w)=0 č the original amplitude at
frequency w is filtered out.
filter or data window
power spectrum after filtering
original power spectrum