private static OffsetSampleProvider CreateSignalGenerator(int @from, int channels)
{
var signalGenerator = new SignalGenerator(@from, channels);
signalGenerator.Type = SignalGeneratorType.SawTooth;
signalGenerator.Frequency = 512;
signalGenerator.Gain = 0.3f;
var offset = new OffsetSampleProvider(signalGenerator);
offset.TakeSamples = @from * channels * 5; // 5 seconds
return offset;
}
public MainWindow()
{
frqLog = Math.Log10(fMax / fMin);
// Init Audio
driverOut = new WaveOut();
driverOut.DesiredLatency = 100;
wave = new ADSRSignalGenerator();
osc1 = new SignalGenerator();
osc2 = new SignalGenerator();
osc3 = new SignalGenerator();
driverOut.Init(wave);
envEnabled = false;
// Init UI
InitializeComponent();
}
public GeneratorPanel()
{
// Const
Log10FmaxFMin = Math.Log10(FMax/FMin);
// Panel Init
InitializeComponent();
this.Disposed += new EventHandler(GeneratorPanel_Disposed);
// Init Audio
driverOut = new WaveOut();
driverOut.DesiredLatency = 100;
//driverOut = new AsioOut(0);
wg = new SignalGenerator();
// Par Default Frq 1200Hz
cmbFrq.SelectedIndex = 0;
cmbPrecisionFrq.SelectedIndex = 2;
tbFrq.Value = 12; // 1200Hz
tbToFrq();
// Par Default Frq End 2000Hz
cmbFrqEnd.SelectedIndex = 0;
cmbPrecisionFrqEnd.SelectedIndex = 2;
tbFrqEnd.Value = tbFrqEnd.Maximum;
tbToFrqEnd();
// comboBox Type
cmbType.DataSource = Enum.GetValues(typeof (SignalGeneratorType));
cmbType.SelectedIndex = 0;
// Par Default Gain -20dB
tbGain.Value = -20;
tbToGain();
// Par Default SweepSeconds
tbSweepLength.Value = 10;
tbToSweepLength();
// Init Driver Audio
driverOut.Init(wg);
StartStopEnabled();
}
public GeneratorPanel()
{
// Const
log10FmaxFMin = Math.Log10(FMax/FMin);
// Panel Init
InitializeComponent();
Disposed += OnGeneratorPanelDisposed;
// Init Audio
driverOut = new WaveOutEvent();
//driverOut = new AsioOut(0);
wg = new SignalGenerator();
// Par Default Frq 1200Hz
cmbFrq.SelectedIndex = 0;
cmbPrecisionFrq.SelectedIndex = 2;
tbFrq.Value = 12; // 1200Hz
CalculateTrackBarFrequency();
// Par Default Frq End 2000Hz
cmbFrqEnd.SelectedIndex = 0;
cmbPrecisionFrqEnd.SelectedIndex = 2;
tbFrqEnd.Value = tbFrqEnd.Maximum;
CalculateTrackBarEndFrequency();
// comboBox Type
cmbType.DataSource = Enum.GetValues(typeof (SignalGeneratorType));
cmbType.SelectedIndex = 0;
// Par Default Gain -20dB
tbGain.Value = -20;
CalculateTrackBarToGain();
// Par Default SweepSeconds
tbSweepLength.Value = 10;
CalculateTrackBarToSweepLength();
// Init Driver Audio
driverOut.Init(wg);
StartStopEnabled();
}
private static WaveStream CreatePcmTestStream()
{
var testFile = @"C:\Users\Mark\Code\CodePlex\pcm mono 16 bit 8kHz.wav";
if (File.Exists(testFile))
{
return new WaveFileReader(testFile);
}
var outFormat = new WaveFormat(8000, 16, 1);
const int durationInSeconds = 5;
var sg = new SignalGenerator(outFormat.SampleRate, outFormat.Channels)
{
Frequency = 1000,
Gain = 0.25,
Type = SignalGeneratorType.Sin
};
var sp = sg.ToWaveProvider16();
byte[] data = new byte[outFormat.AverageBytesPerSecond * durationInSeconds];
var bytesRead = sp.Read(data, 0, data.Length);
Assert.AreEqual(bytesRead, data.Length);
return new RawSourceWaveStream(new MemoryStream(data), outFormat);
}
public static void PlaySingleNote(Object n)
{
Note note = (Note)n;
int msduration = getDuration(note);
SignalGeneratorType t = SignalGeneratorType.Triangle;
if (note.waveform == Waveforms.Triangle)
{
t = SignalGeneratorType.Triangle;
}
else if (note.waveform == Waveforms.Sawtooth)
{
t = SignalGeneratorType.SawTooth;
}
else if (note.waveform == Waveforms.Pulse)
{
t = SignalGeneratorType.Square;
}
var signal = new NAudio.Wave.SampleProviders.SignalGenerator()
{
Gain = 0.8,
Frequency = note.frequency,
Type = t
}.Take(TimeSpan.FromMilliseconds(msduration));
using (var wo = new WaveOutEvent())
{
wo.Init(signal);
wo.Play();
while (wo.PlaybackState == PlaybackState.Playing)
{
//Thread.Sleep(1);
}
}
}
// Clean DriverOut
private void Cleanup()
{
if (driverOut != null)
driverOut.Stop();
if (wg != null)
wg = null;
if (driverOut != null)
{
driverOut.Dispose();
}
}
private void CreateMixerWave()
{
osc1 = new SignalGenerator();
switch (osc1Menu.SelectedIndex)
{
case 0:
osc1.Type = SignalGeneratorType.Sin;
break;
case 1:
osc1.Type = SignalGeneratorType.Square;
break;
case 2:
osc1.Type = SignalGeneratorType.Triangle;
break;
case 3:
osc1.Type = SignalGeneratorType.SawTooth;
break;
default:
break;
}
osc2 = new SignalGenerator();
switch (osc2Menu.SelectedIndex)
{
case 0:
osc2.Type = SignalGeneratorType.Sin;
break;
case 1:
osc2.Type = SignalGeneratorType.Square;
break;
case 2:
osc2.Type = SignalGeneratorType.Triangle;
break;
case 3:
osc2.Type = SignalGeneratorType.SawTooth;
break;
default:
break;
}
osc3 = new SignalGenerator();
switch (osc3Menu.SelectedIndex)
{
case 0:
osc3.Type = SignalGeneratorType.Sin;
break;
case 1:
osc3.Type = SignalGeneratorType.Square;
break;
case 2:
osc3.Type = SignalGeneratorType.Triangle;
break;
case 3:
osc3.Type = SignalGeneratorType.SawTooth;
break;
default:
break;
}
}
public NaudioSignalGeneratorNode()
{
FSigGen = new SignalGenerator();
FSigGen.Type = SignalGeneratorType.Square;
}