Cepstral Pitch Tracker

BOOST_AUTO_TEST_CASE(sineCosineDC)

{

    // Sine and cosine mixed

    double in[] = { 0.5, 1.0, -0.5, -1.0 };

    double re[4], im[4];

    Vamp::FFT::forward(4, in, 0, re, im);

    BOOST_CHECK_EQUAL(re[0], 0.0);

    BOOST_CHECK_CLOSE(re[1], 1.0, 1e-12);

    BOOST_CHECK_EQUAL(re[2], 0.0);

    BOOST_CHECK_EQUAL(im[0], 0.0);

    BOOST_CHECK_CLOSE(im[1], -2.0, 1e-12);

    BOOST_CHECK_EQUAL(im[2], 0.0);

    double back[4];

    double backim[4];

    Vamp::FFT::inverse(4, re, im, back, backim);

    COMPARE_ARRAY(back, in);

}