[fcs,powers] = ewert2000(data,fs)
|data||Frequencies of the data, starting from f = 0|
|data||Powerspectrum data to be filtered.|
|fcs||Centre frequencies of the filters|
|powers||Integrated power at the output of each filter|
|Wcf||Matrix containing the frequency-domain squared transfer function|
|fig||flag for plotting fitler transferfunctions 1 = yes, 0 = no plotting|
|fcs||centre frequencies of the filters|
[fcs powers] = ewert2000(data,fig,fs) computes the EPSM-filterbank as presented by Ewert & Dau 2000, without the additional lowpass filter with a cut-off at 150 Hz. This implementation consists of a lowpass filter with a cutoff at 1 Hz, in parallel with 6 bandpass filters with octave spacing. the Center-frequencies of the bandpass filters are lower than the original from Ewert & Dau (2000). In each of the filters data is integrated within the pass-band of the filter to give the power within that filter.
S. Ewert and T. Dau. Characterizing frequency selectivity for envelope fluctuations. J. Acoust. Soc. Am., 108(3):1181--1196, 2000.