public Scale(string m, int f)
{
scaleNotes = new List <string>();
mode = m;
fifth = f;
//通过五度关系定出主音位置
//纯五度有7个半音
var numOfSemitone = 7;
//通过音程关系定出所有音
baseNoteName = "C4";
baseNoteName = NoteHelper.GetNote(baseNoteName, numOfSemitone * fifth);
//如果超出了C0-B8范围
if (baseNoteName.Last() == '8')
{
baseNoteName = baseNoteName.Replace('8', '4');
}
//小调的话把根音调成大调下方小三度
if (mode == "minor")
{
baseNoteName = new Note(NoteHelper.GetNote(baseNoteName, -3)).pitch;
}
scaleNotes.Add(baseNoteName.Substring(0, baseNoteName.Length - 1));
AddKeys(baseNoteName, mode);
var baseNote = new Note(scaleNotes[0] + "4");
var secondNote = new Note(scaleNotes[1] + "4");
var thirdNote = new Note(scaleNotes[2] + "4");
var fourthNote = new Note(scaleNotes[3] + "4");
var fifthNote = new Note(scaleNotes[4] + "4");
var sixthNote = new Note(scaleNotes[5] + "4");
//建立和弦
if (mode == "major")
{
main = ChordHelper.BuildThree(baseNote, ChordThreeCategory.major);
second = ChordHelper.BuildThree(secondNote, ChordThreeCategory.minor);
third = ChordHelper.BuildThree(thirdNote, ChordThreeCategory.minor);
subDominant = ChordHelper.BuildThree(fourthNote, ChordThreeCategory.major);
dominant = ChordHelper.BuildThree(fifthNote, ChordThreeCategory.major);
sixth = ChordHelper.BuildThree(sixthNote, ChordThreeCategory.minor);
}
else
{
main = ChordHelper.BuildThree(baseNote, ChordThreeCategory.minor);
second = ChordHelper.BuildThree(secondNote, ChordThreeCategory.diminished);
third = ChordHelper.BuildThree(thirdNote, ChordThreeCategory.major);
subDominant = ChordHelper.BuildThree(fourthNote, ChordThreeCategory.minor);
dominant = ChordHelper.BuildThree(fifthNote, ChordThreeCategory.major);
sixth = ChordHelper.BuildThree(sixthNote, ChordThreeCategory.major);
}
}
public void test_chord()
{
//建立一个c1上的大三和弦（c1e1g1）
var c = ChordHelper.BuildThree(new Note("C1"), ChordThreeCategory.major);
var chordNoteList = c.notes.Select(n => n.pitch).ToList();
Assert.AreEqual("E1", chordNoteList[1]);
Assert.AreEqual("G1", chordNoteList[2]);
var inputFile = @"D:\新西兰学习生活\大学上课\乐谱数据\古典\【古典】莫扎特C大调奏鸣曲K.545第一乐章.musicxml";
var song = new Song(inputFile, "");
song.Parse();
//第一小节第1拍
var songNotes = song.songNotes.Where(s => s.position < 1).SelectMany(s => s.notes);
var notes = songNotes.Where(s => s.measureNumber == 1);
var degreeOfCon = ChordHelper.DegreeOfConsonance(notes.ToList(), c);
Assert.AreEqual(1, degreeOfCon);
//第一小节第2拍
songNotes = song.songNotes.Where(s => s.position >= 1 && s.position < 2).SelectMany(s => s.notes);
notes = songNotes.Where(s => s.measureNumber == 1);
degreeOfCon = ChordHelper.DegreeOfConsonance(notes.ToList(), c);
Assert.AreEqual(1, degreeOfCon);
//第2小节第1拍
songNotes = song.songNotes.Where(s => s.position < 1).SelectMany(s => s.notes);
notes = songNotes.Where(s => s.measureNumber == 2);
degreeOfCon = ChordHelper.DegreeOfConsonance(notes.ToList(), c);
Assert.AreNotEqual(1, degreeOfCon);
//第2小节第2拍
songNotes = song.songNotes.Where(s => s.position >= 1 && s.position < 2).SelectMany(s => s.notes);
notes = songNotes.Where(s => s.measureNumber == 2);
degreeOfCon = ChordHelper.DegreeOfConsonance(notes.ToList(), c);
Assert.AreNotEqual(1, degreeOfCon);
//遍历
var ret = ChordHelper.ChordAnalysis(1, song.numOfMeasures, song.songNotes, song.scaleList, song.division, song.numOfMeasures);
double non1 = (double)ret.Where(r => r.Contains("none")).Count() / (double)ret.Count;
inputFile = @"D:\新西兰学习生活\大学上课\乐谱数据\现代\【现代】普罗科菲耶夫罗密欧与朱丽叶阳台场景.musicxml";
var song2 = new Song(inputFile, "");
song2.Parse();
var ret2 = ChordHelper.ChordAnalysis(1, song2.numOfMeasures, song2.songNotes, song2.scaleList, song2.division, song2.numOfMeasures);
double non2 = (double)ret2.Where(r => r.Contains("none")).Count() / (double)ret2.Count;
Assert.AreEqual(true, non1 < non2);
}
