public MelodySequence Generate(MelodySequence seq, int seed)
{
var targetSeq = NormalizeSequence(seq);
MelodySequence outputSequence = new MelodySequence();
var targetSequences = targetSeq.Split(SYNC_AFTER_NOTES);
int mainDuration = 0;
int accompDuration = 0;
foreach(var mel in targetSequences)
{
var outputMel = table.Chain(mel.ToArray(), seed);
MelodySequence outputSeq = new MelodySequence(outputMel);
while(outputSeq.Duration > mel.Duration)
{
outputSeq.RemoveLastNote();
}
// outputSeq.RemoveLastNote();
outputSeq.AddPause(mel.Duration - outputSeq.Duration);
// outputSeq.RemoveLastNote();
if (mainDuration > accompDuration)
outputSeq.AddPause(mainDuration - accompDuration);
outputSequence.AddMelodySequence(outputSeq);
mainDuration += mel.Duration;
accompDuration += outputSeq.Duration;
}
return outputSequence;
}
static void Test8()
{
MusicPlayer player = new MusicPlayer();
Console.WriteLine("Hidden Markov Model");
var m1 = GetMelodySequence(@"test\other\frere.mid");
var m2 = GetMelodySequence(@"test\other\babaa.mid");
var m3 = GetMelodySequence(@"test\other\twinkle.mid");
var m4 = GetMelodySequence(@"test\hagrid.mid");
var m5 = GetMelodySequence(@"test\harry.mid");
var m6 = GetMelodySequence(@"test\harry2.mid");
MarkovGenerator markov = new MarkovGenerator(new MelodySequence[] { m6 });
while (true)
{
Composition comp = new Composition();
GeneticGenerator gen = new GeneticGenerator(new MetricSimilarity(m6, new IMetric[] { new Rhythm(), new RhythmicBigram(), new RhythmicInterval() }));
var notes2 = gen.Generate();
Track t2 = new Track((PatchNames)0, 10);
MelodySequence s = new MelodySequence();
s.AddPause((int)Durations.wn * 10);
foreach (Note n in notes2.Notes)
{
if (n.Pitch <= 0)
n.Pitch = 0;
else if (n.Pitch > 48)
n.Pitch = 40;
else if (n.Pitch > 70)
n.Pitch = 35;
else
{
n.Pitch = 49;
n.Duration *= 4;
n.Velocity = 50;
s.AddPause(n.Duration * 2);
}
s.AddNote(n);
}
t2.AddSequence(s);
var notes3 = markov.Generate().Notes as Note[];
MelodySequence baseseq = new MelodySequence();
int max_dur = 0;
int max_index = 0;
for (int i = (int)(notes3.Length * 0.7f); i < notes3.Length; i++)
{
if (notes3[i].Duration > max_dur)
{
max_dur = notes3[i].Duration;
max_index = i;
}
}
Note last_note = null;
for (int i = 0; i < max_index; i++)
{
last_note = notes3[i];
baseseq.AddNote(last_note);
}
baseseq.AddNote(new Note(last_note.Pitch - 12, last_note.Duration));
baseseq.AddNote(new Note(last_note.Pitch - 24, last_note.Duration * 2));
baseseq.AddPause(last_note.Duration * 32);
Track t = new Track(PatchNames.Vibraphone, 1);
var b1 = baseseq.Clone() as MelodySequence;
var b2 = baseseq.Clone() as MelodySequence;
var b3 = baseseq.Clone() as MelodySequence;
b1.Transpose(12);
b2.Transpose(6);
b3.Transpose(-12);
t.AddSequence(baseseq);
t.AddSequence(b1);
t.AddSequence(b2);
t.AddSequence(b3);
comp.Add(t);
comp.Add(t2);
Console.WriteLine("Press enter key to listen");
Console.ReadLine();
player.Play(comp);
}
}
public HarmonySequence GetHarmonySequence(MelodySequence seq)
{
HarmonySequence sequence = new HarmonySequence();
foreach(Note n in seq.ToArray())
{
if (n.Pitch > 0 && n.Velocity > 0 && n.Duration > (int)Durations.en)
sequence.AddChord(GetChord(n));
else
seq.AddPause(n.Duration);
}
return sequence;
}