public static void ToPeqCoefficient(Coefficient digital, ParametricEqualizer.Parameter peq)
{
double[] a = digital.a;
double[] b = digital.b;
peq.c = b[0] / a[0];
peq.a1 = -a[1] / a[0];
peq.a2 = -a[2] / a[0];
peq.b1 = b[1] / b[0];
peq.b2 = b[2] / b[0];
}
/// <summary>
/// PEQ 係数(LPF)を計算。
/// </summary>
/// <param name="w"></param>
/// <returns></returns>
public virtual ParametricEqualizer.Parameter[] GetLPF(double w)
{
ParametricEqualizer.Parameter[] peq = new ParametricEqualizer.Parameter[this.Length];
for (int i = 0; i < peq.Length; ++i)
{
peq[i] = new ParametricEqualizer.Parameter();
}
ToPeqCoefficient(this.GetDigitalLPF(w), peq);
return(peq);
}