Method kAtSlope

src/internal/src/DynamicsCompressorKernel.cpp:129–160

}

float DynamicsCompressorKernel::kAtSlope(float desiredSlope)
{
    float xDb = m_dbThreshold + m_dbKnee;
    float x = decibelsToLinear(xDb);

    // Approximate k given initial values.
    float minK = 0.1f;
    float maxK = 10000;
    float k = 5;

    for (int i = 0; i < 15; ++i)
    {
        // A high value for k will more quickly asymptotically approach a slope of 0.
        float slope = slopeAt(x, k);

        if (slope < desiredSlope)
        {
            // k is too high.
            maxK = k;
        }
        else
        {
            // k is too low.
            minK = k;
        }

        // Re-calculate based on geometric mean.
        k = sqrtf(minK * maxK);
    }

    return k;
}

float DynamicsCompressorKernel::updateStaticCurveParameters(float dbThreshold, float dbKnee, float ratio)
{