text: public virtual float HyperbolicTf(float freq){if (0.0f == freq){return 0.0f;}float min = tf_hyper_min;float max = tf_hyper_max;double @base = tf_hyper_base;float xoffset = tf_hyper_xoffset;double x = (double)(freq - xoffset);float result = min + (float)((max - min) / 2.0f * (((Math.Pow(@base, x) - Math.Pow(@base, -x)) / (Math.Pow(@base, x) + Math.Pow(@base, -x))) + 1.0d));return float.IsNaN(result) ? max : result;}