private double GetNumberOfIntervals(ConsonanceCatagories cc, int start, int end)
{
double ret = 0;
var partIntervalList = new List <Interval>();
if (start != -1 && end != -1)
{
partIntervalList = intervalList.Where(i => i.measureNumber >= start && i.measureNumber <= end).ToList();
}
else
{
partIntervalList = intervalList;
}
var cclist = partIntervalList.Where(p => p.consonanceCategory == cc);
return(cclist.Sum(c => c.weight));
}
public static (int, IntervalCatagories, ConsonanceCatagories) GetIntervalDetails(Note a, Note b)
{
IntervalCatagories intervalCategory = 0;
ConsonanceCatagories consonanceCategory = ConsonanceCatagories.perfectConsonance;
//real length
int length = b.id - a.id;
var distance = Math.Abs(length);
while (distance > 12)
{
distance -= 12;
}
//https://en.wikipedia.org/wiki/Consonance_and_dissonance
switch (distance)
{
//unison and octave
case 0:
intervalCategory = IntervalCatagories.unison;
consonanceCategory = ConsonanceCatagories.perfectConsonance;
break;
case 12:
intervalCategory = IntervalCatagories.octave;
consonanceCategory = ConsonanceCatagories.perfectConsonance;
break;
//fourth and fifth
case 5:
intervalCategory = IntervalCatagories.perfectFourth;
consonanceCategory = ConsonanceCatagories.medianConsonance;
break;
case 7:
intervalCategory = IntervalCatagories.perfectFifth;
consonanceCategory = ConsonanceCatagories.medianConsonance;
break;
//minor and major third
case 3:
intervalCategory = IntervalCatagories.minorThird;
consonanceCategory = ConsonanceCatagories.imperfectConsonance;
break;
case 4:
intervalCategory = IntervalCatagories.majorThird;
consonanceCategory = ConsonanceCatagories.imperfectConsonance;
break;
//major sixth and minor seventh
case 9:
intervalCategory = IntervalCatagories.majorSixth;
consonanceCategory = ConsonanceCatagories.imperfectDissonance;
break;
case 8:
intervalCategory = IntervalCatagories.minorSixth;
consonanceCategory = ConsonanceCatagories.imperfectDissonance;
break;
//major second and minor sixth
case 2:
intervalCategory = IntervalCatagories.majorSecond;
consonanceCategory = ConsonanceCatagories.medianDissonance;
break;
case 10:
intervalCategory = IntervalCatagories.minorSeventh;
consonanceCategory = ConsonanceCatagories.medianDissonance;
break;
//semitone, tritone, major seventh
case 1:
intervalCategory = IntervalCatagories.minorSecond;
consonanceCategory = ConsonanceCatagories.perfectDisonnace;
break;
case 6:
intervalCategory = IntervalCatagories.augmentFourth;
consonanceCategory = ConsonanceCatagories.perfectDisonnace;
break;
case 11:
intervalCategory = IntervalCatagories.majorSeventh;
consonanceCategory = ConsonanceCatagories.perfectDisonnace;
break;
}
return(length, intervalCategory, consonanceCategory);
}
