public EnvelopeFollower(double fs, double releaseMs)
{
Fs = fs;
double ts = 1.0 / fs;
inputFilter = new Butterworth(fs);
inputFilter.Parameters[Butterworth.P_ORDER] = 2;
inputFilter.Parameters[Butterworth.P_CUTOFF_HZ] = InputFilterCutoff;
inputFilter.Update();
var emaAlpha = Utils.ComputeLpAlpha(EmaFc, ts);
double slowDbDecayPerSample = -60 / (3000 / 1000.0 * fs);
slowDecay = Utils.Db2Gain(slowDbDecayPerSample);
SetRelease(releaseMs);
sma = new Sma((int)(fs * SmaPeriodSeconds));
ema = new Ema(emaAlpha);
movementLatch = new EmaLatch(0.005, 0.2); // frequency dependent, but not really that critical...
triggerCounterTimeoutSamples = (int)(fs * TimeoutPeriodSeconds);
holdAlpha = Utils.ComputeLpAlpha(HoldSmootherFc, ts);
}
public EnvelopeFollower(double fs, double releaseMs)
{
Fs = fs;
double ts = 1.0 / fs;
inputFilter = new Butterworth(fs);
inputFilter.Parameters[Butterworth.P_ORDER] = 2;
inputFilter.Parameters[Butterworth.P_CUTOFF_HZ] = InputFilterCutoff;
inputFilter.Update();
var emaAlpha = Utils.ComputeLpAlpha(EmaFc, ts);
double slowDbDecayPerSample = -60 / (3000 / 1000.0 * fs);
slowDecay = Utils.Db2Gain(slowDbDecayPerSample);
SetRelease(releaseMs);
sma = new Sma((int)(fs * SmaPeriodSeconds));
ema = new Ema(emaAlpha);
movementLatch = new EmaLatch(0.005, 0.2); // frequency dependent, but not really that critical...
triggerCounterTimeoutSamples = (int)(fs * TimeoutPeriodSeconds);
holdAlpha = Utils.ComputeLpAlpha(HoldSmootherFc, ts);
}