static void Test_PartialTimeline()
{
var format = new WaveFormat {
bytesPerSample = 2,
sampleRate = 44100,
channels = 2,
};
// fill timeline
var timeline = new PartialTimeline(format);
float level = 0.3f;
timeline.AddPartial(1000, 880.0, 100, 3000 - 100 - 1, level, -1f, 0f);
timeline.AddPartial(0, 440.0, 100, 2000 - 100 - 1, level, 0f, -4f);
timeline.AddPartial(500, 660.0, 100, 2000 - 100 - 1, level, 1f, -2f);
// export to wave file
string file = "timeline1.wav";
using (var w = new WaveWriter(format, file)) {
byte[] buffer = new byte[format.bytesPerSample * format.sampleRate]; // for 1 sec
while (timeline.Fill(buffer))
{
w.Write(buffer);
}
}
}
static void Test_PartialTimeline_Bend()
{
// create timeline
var format = new WaveFormat {
bytesPerSample = 2,
sampleRate = 44100,
channels = 1,
};
var timeline = new PartialTimeline(format);
// create a bend
double deltaMs = 4000;
double deltaCents = new Rational(9, 8).ToCents();
int bendIndex = timeline.AddBend(deltaMs, deltaCents, endless: true);
// fill timeline
#if false
float level = 0.3f;
timeline.AddPartial(1000, 880.0, 100, 3000 - 100 - 1, level, balance: -1f, curve: 0f, bendIndex);
timeline.AddPartial(0, 440.0, 100, 2000 - 100 - 1, level, balance: 0f, curve: -4f, bendIndex);
timeline.AddPartial(500, 660.0, 100, 2000 - 100 - 1, level, balance: 1f, curve: -2f, bendIndex);
#else
string harmonicity = "Barlow";
Rational[] subgroup = Rational.ParseRationals("2.3.5.11");
Partial[] partials = MakePartials(harmonicity, subgroup, 15);
AddNote(timeline, 0, new Rational(1, 1).ToCents(), partials, bendIndex);
AddNote(timeline, 500, new Rational(3, 2).ToCents(), partials, bendIndex);
AddNote(timeline, 1000, new Rational(4, 3).ToCents(), partials, bendIndex);
AddNote(timeline, 2000, new Rational(2, 1).ToCents(), partials, bendIndex);
#endif
byte[] fullData = timeline.WriteFullData();
// play
Utils.PlayBuffer(fullData, format);
// write wav
//Utils.WriteWavFile(fullData, format, "bend1.wav");
}
static void AddNote(PartialTimeline timeline, int startMs, double cents, Partial[] partials, int bendIndex = -1)
{
foreach (Partial p in partials)
{
double c = cents + p.rational.ToCents();
double hz = Partials.CentsToHz(c);
double level = Math.Pow(p.harmonicity, 2.0f); // !!! was 7.0f
timeline.AddPartial(
startMs,
hz,
10, (int)(2000 * p.harmonicity),
level: (float)(level / partials.Length),
balance: 0f,
curve: -4f,
bendIndex: bendIndex
);
}
}