C++ (Cpp) UpdateCoefficients Examples

Example #1

File: Resampler.cpp Project: in-die-nibelungen/SelfLearning

status_t Resampler::MakeFilterBySpec(double pbRipple, double sbDecay)
{
    UNUSED(pbRipple);
    const int length = static_cast<int>(sizeof(g_KaiserStopbandDecay)/sizeof(int));
    int index;
    for ( index = 0; index < length; ++index)
    {
        if ( g_KaiserStopbandDecay[index] > sbDecay )
        {
            break;
        }
    }
    if ( index == length )
    {
        return -ERROR_NOT_FOUND;
    }
    return UpdateCoefficients(KAISER, static_cast<double>(index + g_KaiserAlphaOffset));
}

Example #2

File: Resampler.cpp Project: in-die-nibelungen/SelfLearning

status_t Resampler::MakeFilterByWindowType(int windowType, double _alpha)
{
    if ( windowType <= 0 && NUM_WINDOW_TYPE <= windowType )
    {
        return -ERROR_ILLEGAL;
    }
    double alpha = _alpha;

    if ( KAISER == windowType )
    {
        if ( alpha < 2.0 )
        {
            alpha = 2.0;
        }
        else if ( alpha > 10.0 )
        {
            alpha = 10.0;
        }
    }
    return UpdateCoefficients(windowType, alpha);
}

Example #3

File: filter12db.cpp Project: BackupTheBerlios/pgrtsound-svn

void Filter12dB::Init() {
	UpdateCoefficients();
}