void source_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
ComplexSignal signal = ComplexSignal.FromSignal(eventArgs.Signal);
if (hammingWindowToolStripMenuItem.Checked)
{
ComplexSignal c = window.Apply(signal, 0);
signal = c;
}
signal.ForwardFourierTransform();
Complex[] channel = signal.GetChannel(0);
double[] power = Accord.Audio.Tools.GetPowerSpectrum(channel);
double[] freqv = Accord.Audio.Tools.GetFrequencyVector(signal.Length, signal.SampleRate);
power[0] = 0; // zero DC
float[] g = new float[power.Length];
for (int i = 0; i < power.Length; i++)
{
// g[i, 0] = freqv[i];
g[i] = (float)power[i];
}
chart1.RangeX = new DoubleRange(freqv[0], freqv[freqv.Length - 1] / hScrollBar1.Value);
chart1.RangeY = new DoubleRange(0f, Math.Pow(10, -vScrollBar1.Value));
chart1.UpdateWaveform("fft", g);
}
/// <summary>
/// This method will be called whenever there is a new input audio frame
/// to be processed. This would be the case for samples arriving at the
/// computer's microphone
/// </summary>
///
private void source_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
this.encoder.addNewFrame(eventArgs.Signal);
updateWaveform(this.encoder.current, eventArgs.Signal.Length);
}
private void source_NewFrame(object sender, NewFrameEventArgs e)
{
IAudioSource source = sender as IAudioSource;
int index = (int)source.UserData;
signals[index] = e.Signal;
stopEvents[index].Set();
}
/// <summary>
/// This method will be called whenever there is a new input audio frame
/// to be processed. This would be the case for samples arriving at the
/// computer's microphone
/// </summary>
///
private void source_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
// Save current frame
eventArgs.Signal.CopyTo(current);
// Update waveform
updateWaveform(current, eventArgs.Signal.Length);
// Save to memory
encoder.Encode(eventArgs.Signal);
// Update counters
duration += eventArgs.Signal.Duration;
samples += eventArgs.Signal.Samples;
frames += eventArgs.Signal.Length;
}
/// <summary>
/// This method will be called whenever there is a new audio
/// frame to be processed.
/// </summary>
///
void source_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
// We can start by converting the audio frame to a complex signal
ComplexSignal signal = ComplexSignal.FromSignal(eventArgs.Signal);
// If its needed,
if (window != null)
{
// Apply the chosen audio window
signal = window.Apply(signal, 0);
}
// Transform to the complex domain
signal.ForwardFourierTransform();
// Now we can get the power spectrum output and its
// related frequency vector to plot our spectrometer.
Complex[] channel = signal.GetChannel(0);
double[] power = Accord.Audio.Tools.GetPowerSpectrum(channel);
double[] freqv = Accord.Audio.Tools.GetFrequencyVector(signal.Length, signal.SampleRate);
power[0] = 0; // zero DC
float[] g = new float[power.Length];
for (int i = 0; i < power.Length; i++)
g[i] = (float)power[i];
// Adjust the zoom according to the horizontal and vertical scrollbars.
chart1.RangeX = new DoubleRange(freqv[0], freqv[freqv.Length - 1] / hScrollBar1.Value);
chart1.RangeY = new DoubleRange(0f, Math.Pow(10, -vScrollBar1.Value));
chart1.UpdateWaveform("fft", g);
}
void source_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
current = eventArgs.Signal;
detector.Detect(current);
if (initializing)
{
initializing = false;
lbStatus.Invoke((MethodInvoker)delegate()
{
label1.Text = "Frame duration (ms): " + current.Duration;
lbStatus.Text = "Ready";
});
}
}
void source_NewFrame(object sender, NewFrameEventArgs eventArgs)
{
// We can start by converting the audio frame to a complex signal
var signal = ComplexSignal.FromSignal(eventArgs.Signal);
// If its needed,
if (window != null)
{
// Apply the chosen audio window
signal = window.Apply(signal, 0);
}
// Transform to the complex domain
signal.ForwardFourierTransform();
// Now we can get the power spectrum output and its
// related frequency vector to plot our spectrometer.
Complex[] channel = signal.GetChannel(0);
double[] power = Accord.Audio.Tools.GetPowerSpectrum(channel);
ListOfPowerSpectrum.Add(power);
foreach (double value in power)
{
if (value != 0.0 && value > 1.0E-10)
{
//Console.WriteLine("Index to {0}", ListOfPowerSpectrum.IndexOf(power));
soundsDetectedIndexes.Add(ListOfPowerSpectrum.IndexOf(power));
break;
}
}
}
