public void TryToAddHeldNote(PossibleHeldNote heldNote)
{
if (!IsInOtherHeldNote(heldNote))
{
HeldNotes.Add(heldNote);
}
}
private List <PossibleHeldNote> GetHeldNotesFromFrequencyBand(FrequencyBand newFrequencyBand)
{
List <PossibleHeldNote> heldNotes = new List <PossibleHeldNote>();
FrequencyBand.FBPoint lastValidPoint = null;
float amplitudeSum = 0;
int amplitudesN = 0;
float timeDelta = newFrequencyBand.FBPoints[1].Time - newFrequencyBand.FBPoints[0].Time;
foreach (FrequencyBand.FBPoint fbPoint in newFrequencyBand.FBPoints)
{
if (fbPoint.MinimumSquaredErrorToPrevious < MaximumSquaredError)
{
if (lastValidPoint == null)
{
lastValidPoint = fbPoint;
}
amplitudeSum += fbPoint.Amplitude;
amplitudesN++;
}
else
{
if (lastValidPoint != null)
{
float timeDifference = fbPoint.Time - lastValidPoint.Time;
if (timeDifference > MinimumTimeWidth)
{
PossibleHeldNote heldNote = new PossibleHeldNote();
heldNote.StartTime = lastValidPoint.Time;
heldNote.EndTime = fbPoint.Time - timeDelta;
float amplitudeMeanValue = amplitudeSum / amplitudesN;
heldNote.AmplitudeMeanValue = amplitudeMeanValue;
heldNote.Applicability = amplitudeMeanValue;
heldNotes.Add(heldNote);
}
lastValidPoint = null;
}
amplitudeSum = 0;
amplitudesN = 0;
}
}
return(heldNotes);
}
private bool IsInOtherHeldNote(PossibleHeldNote newHeldNote)
{
foreach (PossibleHeldNote heldNote in HeldNotes)
{
if (IsInBetween(heldNote, newHeldNote.StartTime) ||
IsInBetween(heldNote, newHeldNote.EndTime))
{
return(true);
}
if (IsInBetween(newHeldNote, heldNote.StartTime) ||
IsInBetween(newHeldNote, heldNote.EndTime))
{
return(true);
}
}
return(false);
}
private bool IsInBetween(PossibleHeldNote heldNote, float value)
{
return(heldNote.StartTime <= value && heldNote.EndTime >= value);
}
