static int GetFrequency(NoteName noteName, int octave = BaseOctave, NoteTuning tuning = NoteTuning.LA_440)
{
string noteKey = GetNoteKey(noteName, octave, tuning);
int frequency;
if (!frequencies.TryGetValue(noteKey, out frequency))
{
int baseFrequency;
string baseNoteKey = GetNoteKey(NoteName.LA, BaseOctave, tuning);
if (!frequencies.TryGetValue(baseNoteKey, out baseFrequency))
{
baseFrequency = (int)tuning;
frequencies[baseNoteKey] = baseFrequency;
}
int semiTone = GetSemiTone(noteName, octave);
int baseSemitone = GetSemiTone(NoteName.LA, BaseOctave);
int deltaSemiTones = semiTone - baseSemitone;
frequency = (int)Math.Round(baseFrequency * Math.Pow(SemiToneFactor, deltaSemiTones));
if (frequency < 37)
{
throw new Exception("Console.Beep won't work .. so don't make a note below RE_octave1_LA_446");
}
frequencies[noteKey] = frequency;
}
return(frequency);
}
static string GetNoteKey(NoteName noteName, int octave = BaseOctave, NoteTuning tuning = NoteTuning.LA_440)
{
var sb = new StringBuilder();
sb.Append(noteName.ToString());
sb.Append(octave.ToString());
sb.Append(tuning.ToString());
return(sb.ToString());
}
public Note(NoteName noteName, double duration = 1, int octave = BaseOctave, NoteTuning tuning = NoteTuning.LA_440)
{
if (octave < 1 || (octave == 1 && noteName < NoteName.RE))
{
throw new Exception("Can't create a note lower than RE1");
}
Name = Enum.GetName(typeof(NoteName), noteName).ToLower().Replace("_sharp", "#");
Octave = octave;
Tuning = tuning;
Frequency = GetFrequency(noteName, octave, tuning);
Duration = duration;
NotePlayer = PlayWithTextAndSound;
}
