static IFilter GetFilter()
{
double Fl = Common.Normalize(5000);
double Fh = Common.Normalize(15000);
LowPassFir lpf = new LowPassFir(16, Fl);
BandPassFir bpf = new BandPassFir(16, Fl, Fh);
HighPassFir hpf = new HighPassFir(16, Fh);
PeakingEqualizer peql = new PeakingEqualizer(Common.Normalize(900), 3, 1.5);
PeakingEqualizer peqm = new PeakingEqualizer(Common.Normalize(8000), 5, 2);
PeakingEqualizer peqh = new PeakingEqualizer(Common.Normalize(20000), 2, 4);
Delay dl = new Delay(4);
Delay dm = new Delay(8);
Delay dh = new Delay(16);
#if OUTPUT_COEF
using(StreamWriter writer = new StreamWriter("coef.txt"))
{
Write(writer, "LPF", lpf);
Write(writer, "BPF", bpf);
Write(writer, "HPF", hpf);
Write(writer, "PEQ L", peql);
Write(writer, "PEQ M", peqm);
Write(writer, "PEQ H", peqh);
Write(writer, "DLY L", dl);
Write(writer, "DLY M", dm);
Write(writer, "DLY H", dh);
}
#endif
IFilter low = new SerialConnector(new IFilter[]{lpf, peql, dl});
IFilter mid = new SerialConnector(new IFilter[]{bpf, peqm, dm});
IFilter hig = new SerialConnector(new IFilter[]{hpf, peqh, dh});
IFilter filter = new Mixer(
new IFilter[]{low, mid, hig},
new Double[]{2, 1, 0.5});
return filter;
}
static void Write(StreamWriter writer, string title, Delay f)
{
writer.Write("{0}\n{1}\n", title, f.Taps);
}