Input data dimensions and window dimensions don't match

[hurui79]

how should use this function ?How should i choose _Window ? can i get a demo?

ShortTimeFourier(double[] signal, int frameLength, int overlap, int fourierLength, _Window window, double Fs) Compute the Short-Time Fourier Transform for a time signal, with windowing.

this is matlab,i want it on java ,how shoul i do?

[psambit9791]

I don't think there is an actual mismatch issue here.

An example of using Window with STFT is shown here:

public void testSTFTPositiveHanning2() {
        double[] signal2 = {0,  0.0032054,  0.012821,   0.028844    ,0.051264,  0.080049,   0.11514,    0.15642,
            0.20371,    0.25673,    0.31508,    0.3782,     0.44536,    0.5156,     0.58773,    0.66029,
            0.73154,    0.79944,    0.86167,    0.91566,    0.95863,    0.98767,    0.99981,    0.99222,
            0.96229,    0.90789,    0.82756,    0.72074,    0.58799,    0.43124,    0.25394,    0.061185,
            -0.14025,   -0.34202,   -0.53442,   -0.70682,   -0.8482,    -0.9479,    -0.99649,   -0.98675,
            -0.91462,   -0.78017,   -0.58825,   -0.34894,   -0.077492,  0.20622,    0.4789,     0.71561,
            0.89212,    0.98757,    0.98731,    0.88551,    0.68706,    0.40855,    0.077812,   -0.26817,
            -0.58696,   -0.83575,   -0.97747,   -0.98685,   -0.85575,   -0.59652,   -0.24245,   0.15515,
            0.53361,    0.82846,    0.98481,    0.96847,    0.77473,    0.4324,     0.0016027,  -0.43529,
            -0.78872,   -0.9806,    -0.96272,   -0.73066,   -0.32904,   0.15452,    0.60676,    0.91488,
            0.99558,    0.81957,    0.42429,    -0.090588,  -0.58592,   -0.91986,   -0.9895,    -0.76512,
            -0.30533,   0.25425,    0.73849,    0.98726,    0.9103,     0.52354,    -0.048382,  -0.60854,
            -0.95404,   -0.95102,   -0.59032,   -2.9398e-15};
        int frameLength = 5;
        int overlap = 2;
        _Window window = new Hanning(frameLength);

        ShortTimeFourier stft = new ShortTimeFourier(signal2, frameLength, overlap, window);
        stft.transform();
        Complex[][] out = stft.getComplex(true);
}

for this to work you will need to import the Hanning window (or any other window as required).

import com.github.psambit9791.jdsp.windows.Hanning;