/// <summary>
/// Constructor
/// </summary>
/// <param name="tuning">The selected tuning for this instrument.</param>
/// <param name="attack">Attack time, in seconds.</param>
/// <param name="decay">Decay time, in secods.</param>
/// <param name="sustainLevel">The strength of the signal during the sustain phase. Value between 0 and 1.</param>
/// <param name="release">Release time in secods.</param>
/// <param name="generator">A function that determines the air pressure for a specific time and frequency.</param>
public Instrument(Tuning tuning, double attack, double decay, double sustainLevel, double release,
Func <double, double, double> generator)
{
this.Tuning = tuning;
this.Attack = attack;
this.Decay = decay;
this.SustainLevel = sustainLevel;
this.Release = release;
this.generator = generator;
this.MinimalNoteLength = attack + decay + release;
analyse();
}
public static void Main()
{
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
var tuning = new Tuning(Tuning.Scale.Ptolemaic, 280, 53);
var lead = new Instrument(
tuning,
attack: 0.05, decay: 0.1, sustainLevel: 0.5, release: 0.4,
(double time, double frequency) =>
(
3d * Waveform.Triangle(time, frequency) +
2d * Waveform.Triangle(time, frequency + 1.8d) +
0.8d * Waveform.Triangle(time, frequency * 2d + 0.8d) +
0.5d * Waveform.Triangle(time, frequency + 3.8d)
) +
0.02d * Waveform.Noise()
);
var crystal = new Instrument(
tuning,
attack: 0.05, decay: 0.1, sustainLevel: 0.5, release: 0.4,
(double time, double frequency) =>
(
3d * Waveform.SemiSine(time, frequency) +
2d * Waveform.SemiSine(time, frequency + 0.8d) +
1d * Waveform.SemiSine(time, frequency + 1.6d) +
0.5d * Waveform.SemiSine(time, frequency + 2.1d)
) +
0.01d * Waveform.Noise()
);
var synthBass = new Instrument(
tuning,
attack: 0.05, decay: 0.1, sustainLevel: 0.5, release: 0.4,
(double time, double frequency) =>
(
3d * Waveform.Triangle(time, frequency - 0.2d) +
2d * Waveform.Triangle(time, frequency + 0.7d) +
1d * Waveform.Triangle(time, frequency + 1.5d) +
0.5d * Waveform.Triangle(time, frequency + 2.2d)
) * (frequency / tuning.BaseFrequency) +
(
3d * Waveform.Sawtooth(time, frequency - 0.2d) +
2d * Waveform.Sawtooth(time, frequency + 0.9d) +
1d * Waveform.Sawtooth(time, frequency + 1.8d) +
0.5d * Waveform.Sawtooth(time, frequency + 2.7d)
) * (30d / frequency) +
0.08d * Waveform.Noise()
);
var track = new Track(Track.SampleRateValue.R_44100_Hz);
var Superius = new Sequence(lead, "data/Pavane_dAngleterre.mid", filterChannel: 0, steroPan: -0.4,
tempoChange: 0.95, lengthChange: 0.7, volumeChange: 0.8, octaveShift: 0);
var Tenor = new Sequence(crystal, "data/Pavane_dAngleterre.mid", filterChannel: 1, steroPan: 0.4,
tempoChange: 0.95, lengthChange: 0.7, volumeChange: 1.4, octaveShift: 0);
var Bass = new Sequence(synthBass, "data/Pavane_dAngleterre.mid", filterChannel: 2, steroPan: 0.2,
tempoChange: 0.95, lengthChange: 0.7, volumeChange: 2.5, octaveShift: 0);
track.AddSequence(Superius);
track.AddSequence(Tenor);
track.AddSequence(Bass);
track.Render(delay: 0.7, Superius.TotalLength);
track.SaveAsWavFile("data/Pavane_dAngleterre.wav");
}
