yakex
Junior Member level 3
hi,
I have adopt the ADS5560 for sampling, and the sample sequence is expresses as X in matlab. Then I want to calculate the power/energy spectrum in decibel, I have a problem whether to choose 20 or 10 as the multipy coefficient, i.e.,
20*log10(abs(fft(X)) or
10*log10(abs(fft(X))
thanks to all.
--yakex
I have adopt the ADS5560 for sampling, and the sample sequence is expresses as X in matlab. Then I want to calculate the power/energy spectrum in decibel, I have a problem whether to choose 20 or 10 as the multipy coefficient, i.e.,
20*log10(abs(fft(X)) or
10*log10(abs(fft(X))
thanks to all.
--yakex