public static BiQuad CreatePeakEQFilter(int sampleRate, double frequency, double bandWidth, double peakGainDB)
{
BiQuad res = new BiQuad();
res.Q = bandWidth;
res.fc = frequency / sampleRate;
res.peakGain = peakGainDB;
res.CalcBiquad();
return res;
}
public static BiQuad CreatePeakEQFilter(int sampleRate, double frequency, double bandWidth, double peakGainDB)
{
BiQuad res = new BiQuad();
res.Q = bandWidth;
res.fc = frequency / sampleRate;
res.peakGain = peakGainDB;
res.CalcBiquad();
return(res);
}
public EqFilter(int sampleRate, double centerFrequency, float bandWidth, float gain)
{
if (sampleRate <= 0)
throw new ArgumentOutOfRangeException("sampleRate");
if (centerFrequency <= 0)
throw new ArgumentOutOfRangeException("centerFrequency");
if (bandWidth <= 0)
throw new ArgumentOutOfRangeException("bandWidth");
_sampleRate = sampleRate;
_centerFrequency = centerFrequency;
_bandWidth = bandWidth;
_gain = gain;
_filter = BiQuad.CreatePeakEQFilter(sampleRate, centerFrequency, bandWidth, gain);
}
