EEG EEG_to_EEG_bss (EEG me, double startTime, double endTime, long ncovars, double lagTime, const wchar_t *channelRanges, int whiteningMethod, int diagonalizerMethod, long maxNumberOfIterations, double tol) {
try {
// autowindow
if (startTime == endTime) {
startTime = my xmin; endTime = my xmax;
}
// don't allow times outside domain
if (startTime < my xmin) {
startTime = my xmin;
}
if (endTime > my xmax) {
endTime = my xmax;
}
long numberOfChannels;
autoNUMvector <long> channelNumbers (NUMstring_getElementsOfRanges (channelRanges, my d_numberOfChannels, & numberOfChannels, NULL, L"channel", true), 1);
autoEEG thee = my f_extractPart (startTime, endTime, true);
if (whiteningMethod != 0) {
bool fromCorrelation = whiteningMethod == 2;
autoPCA pca = EEG_to_PCA (thee.peek(), thy xmin, thy xmax, channelRanges, fromCorrelation);
autoEEG white = EEG_and_PCA_to_EEG_whiten (thee.peek(), pca.peek(), 0);
thee.reset (white.transfer());
}
autoMixingMatrix mm = Sound_to_MixingMatrix (thy d_sound, startTime, endTime, ncovars, lagTime, maxNumberOfIterations, tol, diagonalizerMethod);
autoEEG him = EEG_copyWithoutSound (me);
his d_sound = Sound_and_MixingMatrix_unmix (my d_sound, mm.peek());
EEG_setChannelNames_selected (him.peek(), L"ic", channelNumbers.peek(), numberOfChannels);
// Calculate the cross-correlations between eye-channels and the ic's
return him.transfer();
} catch (MelderError) {
Melder_throw (me, ": no independent components determined.");
}
}
INTEGER (U"Number of components", U"0 (=all)")
OK
DO
EEG me = FIRST (EEG);
PCA thee = FIRST (PCA);
autoEEG him = EEG_and_PCA_to_EEG_principalComponents (me, thee, GET_INTEGER (U"Number of components"));
praat_new (him.move(), my name, U"_pc");
END
FORM (EEG_and_PCA_to_EEG_whiten, U"EEG & PCA: To EEG (whiten)", U"EEG & PCA: To EEG (whiten)...")
INTEGER (U"Number of components", U"0 (=all)")
OK
DO
EEG me = FIRST (EEG);
PCA thee = FIRST (PCA);
autoEEG him = EEG_and_PCA_to_EEG_whiten (me, thee, GET_INTEGER (U"Number of components"));
praat_new (him.move(), my name, U"_white");
END
FORM (EEG_to_Sound_modulated, U"EEG: To Sound (modulated)", 0)
POSITIVE (U"Start frequency (Hz)", U"100.0")
POSITIVE (U"Channel bandwidth (Hz)", U"100.0")
TEXTFIELD (U"Channel ranges", U"1:64")
LABEL (U"", U"To supply rising or falling ranges, use e.g. 2:6 or 5:3.")
OK
DO
LOOP {
iam (EEG);
autoSound thee = EEG_to_Sound_modulated (me, GET_REAL (U"Start frequency"), GET_REAL (U"Channel bandwidth"),
GET_STRING (U"Channel ranges"));
praat_new (thee.move(), my name);
