public static double[] inverse(int overlap, double[][] specto) {
DoubleFFT_1D fft = new DoubleFFT_1D(specto[0].length / 2);
Window w = new BlackmanWindow();
double[][] spectoNew = specto.clone();
double[][] spectoN = new double[spectoNew.length][spectoNew[0].length * 2];
for (int i = 0; i < spectoN.length; i++) {
for (int j = 0; j < spectoN[0].length; j++) {
if (j < spectoNew[0].length) spectoN[i][j] = spectoNew[i][j];
else spectoN[i][j] = spectoNew[i][spectoNew[i].length - 1 - (j - spectoNew[i].length)];
}
}
for (int i = 0; i < spectoN.length; i++) {
spectoN[i] = w.inverseW(specto[i]);
fft.realInverseFull(spectoN[i], true);
}
int window = spectoN[0].length * 2;
double[] signal = new double[spectoN.length * (window - overlap)];
for (int i = 0; i < spectoN.length; i++) {
int length = spectoN[0].length;
if ((window - overlap) * i + length > signal.length)
length = signal.length - (window - overlap) * i;
System.arraycopy(spectoN[i], 0, signal, (window - overlap) * i, length);
}
return signal;
}
