static void Main(string[] args)
{
WaveFormat waveFormat = new WaveFormat(44100, 16, 1);
Oscillator freqOsc = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, new ConstantScalar(0.1f), new ConstantScalar(80.0f), new ConstantScalar(0), new ConstantScalar(100.0f));
Oscillator ampOscVel = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, new ConstantScalar(0.05f), new ConstantScalar(8.0f), new ConstantScalar(0.5f), new ConstantScalar(8.0f));
Oscillator ampOsc = new Oscillator(Oscillator.WaveType.SawtoothWave, waveFormat.SampleRate, ampOscVel, new ConstantScalar(0.5f), new ConstantScalar(0), new ConstantScalar(1.1f));
Oscillator variableFreq = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, freqOsc, ampOsc, new ConstantScalar(0), new ConstantScalar(0));
ScalarPassthrough scalarPassthru = new ScalarPassthrough(waveFormat, variableFreq);
NoiseGenerator noiseGen = new NoiseGenerator(waveFormat, NoiseGenerator.NoiseType.WhiteNoise);
Oscillator freqsweep = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, new ConstantScalar(0.1f), new ConstantScalar(200), new ConstantScalar(0), new ConstantScalar(440));
Oscillator qsweep = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, new ConstantScalar(1.0f), new ConstantScalar(0.9f), new ConstantScalar(0), new ConstantScalar(1.0f)); //new ConstantScalar((float)(1.0 / Math.Sqrt(2)));
//Oscillator gainSweep = new Oscillator(Oscillator.WaveType.TriangleWave, waveFormat.SampleRate, new ConstantScalar(0.025f), new ConstantScalar(2), new ConstantScalar(0), new ConstantScalar(6));
ConstantScalar gainSweep = new ConstantScalar(6);
SampleProcessor.SampleProcessor filter = new SampleProcessor.NotchFilter(waveFormat, freqsweep, qsweep, gainSweep, scalarPassthru);
// distortion "pedal" on a minimally modified hard body electric guitar signal
Oscillator gainOsc = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, new ConstantScalar(0.5f), new ConstantScalar(2), new ConstantScalar(0), new ConstantScalar(5));
Oscillator cutoffOsc = new Oscillator(Oscillator.WaveType.SineWave, waveFormat.SampleRate, new ConstantScalar(0.95f), new ConstantScalar(3), new ConstantScalar(0), new ConstantScalar(4));
ConstantScalar cutoff = new ConstantScalar(0.2f);
IWaveSource cleanguitar = CodecFactory.Instance.GetCodec(@"..\..\sampledata\guitar-sample.mp3"); // sample signal from single-pickup electric guitar. Recorded 8/14/20.
IReadableAudioSource <float> convertedguitar = cleanguitar.ToMono().ToSampleSource();
SampleProcessor.DistortionEffect distortion = new SampleProcessor.DistortionEffect(waveFormat, gainOsc, cutoff, convertedguitar);
SampleProcessor.SampleProcessor reverbEffect = new SampleProcessor.ReverbEffect(waveFormat, new ConstantScalar(0.4f), new ConstantScalar(0.5f), waveFormat.SampleRate, distortion);
BasicAudioController basicAudioController = new BasicAudioController(GetSoundOut(), 1, 44100);
basicAudioController.addSource((ISampleSource)reverbEffect);
basicAudioController.startPlaying();
Console.ReadKey();
basicAudioController.stopPlaying();
return;
MIDI.MIDIData data = MIDI.MIDIFileReader.readFile(@"..\..\sampledata\MIDI_sample.mid");
MIDI.MIDIData testdata = new MIDI.MIDIData();
testdata.format = 0;
testdata.timing = MIDI.TimingScheme.TimeCode;
testdata.timecode_fps = 24;
testdata.timecode_sfr = 4;
testdata.ntracks = 1;
testdata.tracks.Add(new MIDI.MIDITrack());
MIDI.MIDIEvent event0 = new MIDI.MIDIEvent();
MIDI.MIDIEvent event1 = new MIDI.MIDIEvent();
event0.delta = 4 * 24 * 5; // wait 5 seconds from start
event1.delta = 4 * 24 * 2; // 2 seconds
//event0.type = MIDI.EventType.MIDIEvent;
//event0.midieventtype = MIDI.MIDIEventType.NoteOn;
//event0.val1 = 0; // channel 0
//event0.val2 = 60; // middle C
//event0.val3 = 1;
//event1.type = MIDI.EventType.MIDIEvent;
//event1.midieventtype = MIDI.MIDIEventType.NoteOff;
//event1.val1 = 0; // channel 0
//event1.val2 = 60; // middle C
//event1.val3 = 1;
//testdata.tracks[0].events.Add(event0);
//testdata.tracks[0].events.Add(event1);
MIDI.MIDIPlayer player = new MIDI.MIDIPlayer(data);
Console.WriteLine("Track 1 events:");
player.playTrack(1);
Console.ReadKey();
return;
MIDIAudioController audioController = new MIDIAudioController(GetSoundOut());
ChromaticScale.ChromaticScale scale = new ChromaticScale.ChromaticScale();
audioController.startPlaying();
SampleSource.WaveGenerator.WaveType wavetype = WaveGenerator.WaveType.SineWave;
Console.ReadKey(); // wait for input
for (int i = 0; i < scale.notes.Count(); i++)
{
float freq = scale.notes[i].base_freq / 2;
Console.WriteLine(scale.notes[i].identifier[0] + " - " + freq + " - " + wavetype);
audioController.updatePlaying(freq, wavetype);
Console.ReadKey(); // wait for input
wavetype = Next(wavetype);
}
for (int i = 0; i < scale.notes.Count(); i++)
{
Console.WriteLine(scale.notes[i].identifier[0] + " - " + scale.notes[i].base_freq.ToString() + " - " + wavetype);
audioController.updatePlaying(scale.notes[i].base_freq, wavetype);
Console.ReadKey(); // wait for input
wavetype = Next(wavetype);
}
for (int i = 0; i < scale.notes.Count(); i++)
{
float freq = scale.notes[i].base_freq * 2;
Console.WriteLine(scale.notes[i].identifier[0] + " - " + freq + " - " + wavetype);
audioController.updatePlaying(freq, wavetype);
Console.ReadKey(); // wait for input
wavetype = Next(wavetype);
}
audioController.stopPlaying();
audioController.Dispose();
}
public void playTrack(int trackIndex)
{
if (trackIndex >= data.tracks.Count)
{
throw new Exception(String.Format("Invalid track index {0} specified. Highest available track index is {1}", trackIndex, data.tracks.Count - 1));
}
// determine timing increments
UInt64 time_inc_us = 1;
UInt64 time_offset_us = 0; // start time offset
if (data.timing == TimingScheme.MetricalTiming)
{
// locate tempo event in track 0 (format 0 or 1) or playing track for format 2
UInt64 us_per_quarternote = 500000; // 120 bpm default (I think)
switch (data.format)
{
case 0:
for (int i = 0; i < data.tracks[trackIndex].events.Count; i++)
{
if (data.tracks[trackIndex].events[i].type == EventType.MetaEvent && data.tracks[trackIndex].events[i].metaeventtype == MetaEventType.Tempo)
{
Console.WriteLine("Tempo event with value {0} ({0:X2})", data.tracks[trackIndex].events[i].val1);
us_per_quarternote = data.tracks[trackIndex].events[i].val1;
time_inc_us = us_per_quarternote / data.tickdiv;
break;
}
}
break;
case 1:
for (int i = 0; i < data.tracks[0].events.Count; i++)
{
if (data.tracks[0].events[i].type == EventType.MetaEvent && data.tracks[0].events[i].metaeventtype == MetaEventType.Tempo)
{
Console.WriteLine("Tempo event with value {0} ({0:X2})", data.tracks[0].events[i].val1);
us_per_quarternote = data.tracks[0].events[i].val1;
time_inc_us = us_per_quarternote / data.tickdiv; // should give us/p
break;
}
else if (data.tracks[0].events[i].type == EventType.MetaEvent && data.tracks[0].events[i].metaeventtype == MetaEventType.TimeSignature)
{
Console.WriteLine("TimeSignature event with value {0} {1} {2} {3} ({0:X2} {1:X2} {2:X2} {3:X2})", data.tracks[0].events[i].val1, data.tracks[0].events[i].val2, data.tracks[0].events[i].val3, data.tracks[0].events[i].val4);
break;
}
}
break;
case 2:
for (int i = 0; i < data.tracks[trackIndex].events.Count; i++)
{
if (data.tracks[trackIndex].events[i].type == EventType.MetaEvent && data.tracks[trackIndex].events[i].metaeventtype == MetaEventType.Tempo)
{
Console.WriteLine("Tempo event with value {0} ({0:X2})", data.tracks[trackIndex].events[i].val1);
us_per_quarternote = data.tracks[trackIndex].events[i].val1;
time_inc_us = us_per_quarternote / data.tickdiv;
break;
}
}
break;
default:
break;
}
}
else
{
// 1 tick is the sub-frame resolution
time_inc_us = (UInt64)(1000000 / (data.timecode_fps * data.timecode_sfr));
}
UInt64 ticks = 0; // ticks are in microseconds
int event_index = 0;
UInt64 curr_ticks = data.tracks[trackIndex].events[0].delta;
MIDIAudioController audioController = new MIDIAudioController(GetSoundOut());
audioController.startPlayingMidi();
while (event_index < data.tracks[trackIndex].events.Count)
{
while (curr_ticks == 0 && event_index < data.tracks[trackIndex].events.Count)
{
if (data.tracks[trackIndex].events[event_index].type == EventType.MIDIEvent)
{
MIDIEvent the_event = data.tracks[trackIndex].events[event_index];
if (the_event.val1 == 0) // channel 0 for note events
{
switch (the_event.midieventtype)
{
case MIDIEventType.NoteOn:
audioController.startPlayingMIDIKey((int)the_event.val2, (float)the_event.val3 * 0.0001f);
Console.WriteLine("NoteOn {0} {1}", the_event.val2, the_event.val3);
break;
case MIDIEventType.NoteOff:
audioController.stopPlayingMIDIKey((int)the_event.val2, (float)the_event.val3 * 0.0001f);
Console.WriteLine("NoteOff {0} {1}", the_event.val2, the_event.val3);
break;
default:
break;
}
}
}
event_index += 1;
if (event_index >= data.tracks[trackIndex].events.Count)
{
break;
}
curr_ticks = data.tracks[trackIndex].events[event_index].delta;
}
audioController.updateMidiKeys(1.0f); // 1 increment
Thread.Sleep((int)time_inc_us / 1000);
ticks += time_inc_us;
curr_ticks--;
if (event_index >= data.tracks[trackIndex].events.Count)
{
break;
}
//Console.WriteLine("ticks {0} event_index {1} ({2}) curr_ticks {3}", ticks, event_index, data.tracks[trackIndex].events[event_index].delta, curr_ticks);
}
}
