[FieldTrip] change in scaling of sine tapers

jan-mathijs schoffelen jan.schoffelen at donders.ru.nl
Fri Apr 29 12:30:13 CEST 2011

Dear all,

I made a change to how ft_freqanalysis scales the tapers when  
cfg.taper has been specified to be 'sine'. This has been done to make  
the handling of this type of taper consistent with the other (multi)  
tapers. Each of the tapers  used has now a norm of 1, which makes the  
scale of the powerspectrum of the tapered time series consistent  
across different tapers. Initially, this was not the case for the sine  
For backward compatibility I implemented the (we think less  
appropriate) scaled version. In order to use the scaled sine tapers,  
you need to specify cfg.taper = 'sine_old' prior to calling  

Best wishes,


Dr. J.M. (Jan-Mathijs) Schoffelen
Donders Institute for Brain, Cognition and Behaviour,
Centre for Cognitive Neuroimaging,
Radboud University Nijmegen, The Netherlands
J.Schoffelen at donders.ru.nl
Telephone: 0031-24-3614793

More information about the fieldtrip mailing list