FieldTrip

faq, freq, mtmfft

What are the differences between the old and the new implementation of 'mtmftt' in ft_freqanalyis?

Several things have changed in the new implementation of frequency analysis by the new low-level module 'specest'.

All 'mtmfft' output is now phase-shifted such that any angle from any fourier-coefficient is from the perspective of the oscillation in the data being at its peak at time = 0
'mtmfft' can now take a cfg.foi input-vector as well, instead of the usual cfg.foilim (backwards compatible)
In many cases the new implementation will run significantly faster. No increase in memory requirement has been seen so far.

faq/what_are_the_differences_between_the_old_and_the_new_implementation_of_mtmfft_in_ft_freqanalyis.txt · Last modified: 2011/09/07 09:42 by lilla

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