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seen Mar 17 '13 at 15:00

Jan
12
awarded  Teacher
Dec
25
awarded  Student
Dec
22
comment Extracting exact frequencies from FFT output
This paper, by Barry Kulp, gives a technique for using two adjacent bin values for interpolating the exact frequency: tedknowlton.com/resume/FFT_Bin_Interp.html. Hope it's of use.
Dec
22
awarded  Editor
Dec
22
comment Given $\log_2 A$, is there an easy way to calculate $\log_2 (A-1)$?
@Asaf - log(A-1). I fixed the question, thanks.
Dec
22
revised Given $\log_2 A$, is there an easy way to calculate $\log_2 (A-1)$?
Fix ambiguity in equations.
Dec
22
asked Given $\log_2 A$, is there an easy way to calculate $\log_2 (A-1)$?
Dec
22
answered Can the phase of a function be extracted from only its absolute value and its Fourier transform's absolute value?
Dec
22
comment FFT gives ghost frequency
@Commodore64 - definitely aliasing, you should make your comment an answer!
Dec
22
awarded  Supporter
Dec
22
comment Could you a give a intutive interpretation of curl?
Substitute "tiny waterwheel" for "small ball" in the 2nd wiki excerpt, it might be more intuitive then.