Examples with Complex org.apache.commons.math3.complex.Complex used on opensource projects

Example 6 with Complex

use of org.apache.commons.math3.complex.Complex in project opennars by opennars.

the class SpectrumChart method update.

protected void update() {
    TreeMLData chart = data.get(0);
    float length = chart.getEnd() - chart.getStart();
    ;
    int numWindows = (int) Math.ceil(length / windowSize);
    // TODO dont remove existing windows
    windows.clear();
    int t = 0;
    for (int w = 0; w < numWindows; w++) {
        final int vl = windowSize;
        double[] input = new double[vl];
        for (int i = 0; i < vl; i++) {
            input[i] = (float) chart.getData(t++);
        }
        Complex[] c = fft.transform(input, TransformType.FORWARD);
        // phase = atan2( imaginary , real )
        // magnitude = sqrt( real<sup>2</sup> + imaginary<sup>2</sup> )
        windows.add(new Window(c));
    }
}