reset method
Reset all internal state (filters, calibration, envelope)
Implementation
@override
void reset() {
_hpX1 = 0; _hpX2 = 0; _hpY1 = 0; _hpY2 = 0;
_lpX1 = 0; _lpX2 = 0; _lpY1 = 0; _lpY2 = 0;
_soundOnsetTime = null;
_gateOpenTime = null;
_currentPeakInWindow = 0.0;
_gateWasOpen = false;
_currentRms = 0.0;
_currentAttackMs = 0.0;
_calibrationRmsValues.clear();
_calibrated = false;
_isCalibrating = false;
_noiseFloorDb = -60.0;
}