Method process

src/internal/src/Biquad.cpp:27–70

Biquad::~Biquad() { }

void Biquad::process(const float * sourceP, float * destP, int framesToProcess)
{
    int n = framesToProcess;

    // Biquad needs to be double precision at 48khz for frequencies less than 500Hz
    // according to multiple references.

    // Create local copies of member variables
    double x1 = m_x1;
    double x2 = m_x2;
    double y1 = m_y1;
    double y2 = m_y2;

    double b0 = m_b0;
    double b1 = m_b1;
    double b2 = m_b2;
    double a1 = m_a1;
    double a2 = m_a2;

    while (n--)
    {
        float x = *sourceP++;
        float y = static_cast<float>(b0 * x + b1 * x1 + b2 * x2 - a1 * y1 - a2 * y2);

        *destP++ = y;

        // Update state variables
        x2 = x1;
        x1 = x;
        y2 = y1;
        y1 = y;
    }

    m_x1 = x1;// DenormalDisabler::flushDenormalFloatToZero(x1);
    m_x2 = x2;// DenormalDisabler::flushDenormalFloatToZero(x2);
    m_y1 = y1;// DenormalDisabler::flushDenormalFloatToZero(y1);
    m_y2 = y2;// DenormalDisabler::flushDenormalFloatToZero(y2);

    m_b0 = b0;
    m_b1 = b1;
    m_b2 = b2;
    m_a1 = a1;
    m_a2 = a2;
}

void Biquad::reset()
{