Table 1 

Computational complexity. The approximate time in seconds needed for the different spectrum estimation methods to evaluate one spectral estimate. Random signals were used in the evaluation. FFT is the acronym for fast fourier transform, LTS for least trimmed squares and MCD for minimum ovariance determinant. The method Robustperiodic f fcorresponds to the method in [5] 

FFT 
Robusst periodic 
LombScargle 
Tukey 
LTS 
MCD 



Signal length 

20 
0.00005 
0.003 
0.004 
0.01 
3.1 
16.0 
30 
0.00004 
0.004 
0.004 
0.15 
5.0 
22.3 


AhdesmÃ¤ki et al. BMC Bioinformatics 2007 8:233 doi:10.1186/147121058233 