private void SetupSampleSource(ISampleSource aSampleSource)
{
const FftSize fftSize = FftSize.Fft4096;
//create a spectrum provider which provides fft data based on some input
var spectrumProvider = new BasicSpectrumProvider(aSampleSource.WaveFormat.Channels,
aSampleSource.WaveFormat.SampleRate, fftSize);
//linespectrum and voiceprint3dspectrum used for rendering some fft data
//in oder to get some fft data, set the previously created spectrumprovider
_lineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
//the SingleBlockNotificationStream is used to intercept the played samples
var notificationSource = new SingleBlockNotificationStream(aSampleSource);
//pass the intercepted samples as input data to the spectrumprovider (which will calculate a fft based on them)
notificationSource.SingleBlockRead += (s, a) => spectrumProvider.Add(a.Left, a.Right);
_waveSource = notificationSource.ToWaveSource(16);
}
/// <summary>
///
/// </summary>
private void StartAudioVisualization()
{
//Open the default device
iSoundIn = new WasapiLoopbackCapture();
//Our loopback capture opens the default render device by default so the following is not needed
//iSoundIn.Device = MMDeviceEnumerator.DefaultAudioEndpoint(DataFlow.Render, Role.Console);
iSoundIn.Initialize();
SoundInSource soundInSource = new SoundInSource(iSoundIn);
ISampleSource source = soundInSource.ToSampleSource();
const FftSize fftSize = FftSize.Fft2048;
//create a spectrum provider which provides fft data based on some input
BasicSpectrumProvider spectrumProvider = new BasicSpectrumProvider(source.WaveFormat.Channels, source.WaveFormat.SampleRate, fftSize);
//linespectrum and voiceprint3dspectrum used for rendering some fft data
//in oder to get some fft data, set the previously created spectrumprovider
iLineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = false, // Does not matter since we hacked it
BarCount = 16,
BarSpacing = 1,
IsXLogScale = true, // Does not matter since we hacked it
ScalingStrategy = ScalingStrategy.Decibel // Does not matter since we hacked it
};
//the SingleBlockNotificationStream is used to intercept the played samples
var notificationSource = new SingleBlockNotificationStream(source);
//pass the intercepted samples as input data to the spectrumprovider (which will calculate a fft based on them)
notificationSource.SingleBlockRead += (s, a) => spectrumProvider.Add(a.Left, a.Right);
iWaveSource = notificationSource.ToWaveSource(16);
// We need to read from our source otherwise SingleBlockRead is never called and our spectrum provider is not populated
byte[] buffer = new byte[iWaveSource.WaveFormat.BytesPerSecond / 2];
soundInSource.DataAvailable += (s, aEvent) =>
{
int read;
while ((read = iWaveSource.Read(buffer, 0, buffer.Length)) > 0)
{
;
}
};
//Start recording
iSoundIn.Start();
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
var openFileDialog = new OpenFileDialog()
{
Filter = CodecFactory.SupportedFilesFilterEn,
Title = "Select a file..."
};
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
Stop();
const FftSize fftSize = FftSize.Fft4096;
IWaveSource source = CodecFactory.Instance.GetCodec(openFileDialog.FileName);
var spectrumProvider = new BasicSpectrumProvider(source.WaveFormat.Channels,
source.WaveFormat.SampleRate, fftSize);
_lineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
_voicePrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
PointCount = 200,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
var notificationSource = new SingleBlockNotificationStream(source.ToSampleSource());
notificationSource.SingleBlockRead += (s, a) => spectrumProvider.Add(a.Left, a.Right);
_source = notificationSource.ToWaveSource(16);
_soundOut = new WasapiOut();
_soundOut.Initialize(_source.ToMono());
_soundOut.Play();
timer1.Start();
propertyGridTop.SelectedObject = _lineSpectrum;
propertyGridBottom.SelectedObject = _voicePrint3DSpectrum;
}
}
private void SetupSampleSource(ISampleSource aSampleSource)
{
const FftSize fftSize = FftSize.Fft128;
var spectrumProvider = new BasicSpectrumProvider(aSampleSource.WaveFormat.Channels,
aSampleSource.WaveFormat.SampleRate, fftSize);
_lineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Linear
};
var notificationSource = new SingleBlockNotificationStream(aSampleSource);
notificationSource.SingleBlockRead += (s, a) => spectrumProvider.Add(a.Left, a.Right);
_source = notificationSource.ToWaveSource(16);
}
/// <summary>
/// Setup the spectrum analyzer
/// </summary>
public static void SetupSampleSource(ISampleSource aSampleSource)
{
FFTSize = FftSize.Fft2048;
SpectrumProvider = new BasicSpectrumProvider(aSampleSource.WaveFormat.Channels, aSampleSource.WaveFormat.SampleRate, FFTSize);
m_SpectrumAnalyzer = new SpectrumAnalyzer(FFTSize)
{
SpectrumProvider = SpectrumProvider,
UseAverage = true,
BarCount = NumberOfAnalysisBars,
UseLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
var notificationSource = new SingleBlockNotificationStream(aSampleSource);
notificationSource.SingleBlockRead += (s, a) => SpectrumProvider.Add(a.Left, a.Right);
m_Source = notificationSource.ToWaveSource(16);
}
private void NotificationSource_SingleBlockRead(object sender, SingleBlockReadEventArgs e)
{
spectrumProvider.Add(e.Left, e.Right);
}
private void SingleBlockNotificationStream_SingleBlockRead(object sender, SingleBlockReadEventArgs e)
{
basicSpectrumProvider.Add(e.Left, e.Right);
}
private void SingleBlockNotificationStream_SingleBlockRead(object sender, SingleBlockReadEventArgs e)
{
_lineSpectrumProvider.Add(e.Left, e.Right);
_spectrogramProvider.Add(e.Left, e.Right);
_oscilloscope.Add(e.Left, e.Right);
}
private void SetupSampleSource(ISampleSource aSampleSource)
{
const FftSize fftSize = FftSize.Fft4096;
//create a spectrum provider which provides fft data based on some input
spectrumProvider = new BasicSpectrumProvider(aSampleSource.WaveFormat.Channels,
aSampleSource.WaveFormat.SampleRate, fftSize);
//spectrumProvider.GetFftData()
//linespectrum and voiceprint3dspectrum used for rendering some fft data
//in oder to get some fft data, set the previously created spectrumprovider
_lineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
_voicePrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
PointCount = 1,
IsXLogScale = false,
ScalingStrategy = ScalingStrategy.Linear,
MaximumFrequency = 100,
MinimumFrequency = 20
};
_DigitallineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
_DigitalBassPrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
Colors = new Color[2] {
Color.Black, Color.Red
},
SpectrumProvider = spectrumProvider,
UseAverage = false,
PointCount = 1,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Linear,
MaximumFrequency = 250,
MinimumFrequency = 20
};
_DigitalMedioPrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
Colors = new Color[2] {
Color.Black, Color.Green
},
SpectrumProvider = spectrumProvider,
UseAverage = false,
PointCount = 1,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Linear,
MaximumFrequency = 3000,
MinimumFrequency = 250
};
_DigitaltreblePrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
Colors = new Color[2] {
Color.Black, Color.Blue
},
SpectrumProvider = spectrumProvider,
UseAverage = false,
PointCount = 1,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Linear,
MaximumFrequency = 16000,
MinimumFrequency = 3000
};
_GenericlineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
_GenericvoicePrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
PointCount = 200,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt,
MaximumFrequency = 20000,
MinimumFrequency = 20
};
//the SingleBlockNotificationStream is used to intercept the played samples
var notificationSource = new SingleBlockNotificationStream(aSampleSource);
//pass the intercepted samples as input data to the spectrumprovider (which will calculate a fft based on them)
notificationSource.SingleBlockRead += (s, a) => spectrumProvider.Add(a.Left, a.Right);
_source = notificationSource.ToWaveSource(16);
}
private void openToolStripMenuItem_Click(object sender, EventArgs e)
{
var openFileDialog = new OpenFileDialog()
{
Filter = CodecFactory.SupportedFilesFilterEn,
Title = "Select a file..."
};
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
Stop();
const FftSize fftSize = FftSize.Fft4096;
//open the selected file
ISampleSource source = CodecFactory.Instance.GetCodec(openFileDialog.FileName)
.ToSampleSource()
.AppendSource(x => new PitchShifter(x), out _pitchShifter);
//create a spectrum provider which provides fft data based on some input
var spectrumProvider = new BasicSpectrumProvider(source.WaveFormat.Channels,
source.WaveFormat.SampleRate, fftSize);
//linespectrum and voiceprint3dspectrum used for rendering some fft data
//in oder to get some fft data, set the previously created spectrumprovider
_lineSpectrum = new LineSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
BarCount = 50,
BarSpacing = 2,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
_voicePrint3DSpectrum = new VoicePrint3DSpectrum(fftSize)
{
SpectrumProvider = spectrumProvider,
UseAverage = true,
PointCount = 200,
IsXLogScale = true,
ScalingStrategy = ScalingStrategy.Sqrt
};
//the SingleBlockNotificationStream is used to intercept the played samples
var notificationSource = new SingleBlockNotificationStream(source);
//pass the intercepted samples as input data to the spectrumprovider (which will calculate a fft based on them)
notificationSource.SingleBlockRead += (s, a) => spectrumProvider.Add(a.Left, a.Right);
_source = notificationSource.ToWaveSource(16);
//play the audio
_soundOut = new WasapiOut();
_soundOut.Initialize(_source);
_soundOut.Play();
timer1.Start();
propertyGridTop.SelectedObject = _lineSpectrum;
propertyGridBottom.SelectedObject = _voicePrint3DSpectrum;
}
}