Method Blackman

IPL/src/processes/IPLFFT.cpp:144–147

}

double IPLFFT::Blackman(int n, int size)
{
    return ( 0.42 - 0.5 * cos( 2.0 * PI * n / (size-1) ) + 0.08 * cos( 4.0 * PI * n / (size-1) ) );
}