public override void Reset()
{
_n = 0;
_prev = 0;
State = AdsrState.Attack;
}
public override float NextSample()
{
float cur;
if (_n > _sustain)
{
if (_state != AdsrState.Release)
{
State = AdsrState.Release;
}
cur = 0;
}
else if (_n > _decay)
{
if (_state != AdsrState.Sustain)
{
State = AdsrState.Sustain;
}
cur = 1;
}
else if (_n > _attack)
{
if (_state != AdsrState.Decay)
{
State = AdsrState.Decay;
}
cur = 1;
}
else
{
cur = _attackAmp;
}
_prev = _b * cur - _a * _prev;
if (++_n == _release)
{
_n = 0;
}
return(_prev);
}
