private void autocorrelationButton_Click(object sender, EventArgs e)
{
if (_audio != null)
{
actionStateLabel.Text = "PROCESSING";
List <int> frequencies = _audio.Autocorrelation();
string freqText = "";
foreach (int freq in frequencies)
{
freqText += freq.ToString() + " Hz (T = " + (1.0f / freq) + " s), ";
}
actionStateLabel.Text = "";
CharWindow autoCorelation = new CharWindow();
autoCorelation.setPropert();
autoCorelation.Histogram.Series.Add("AutoCorelation");
autoCorelation.Text = "AutoCorelation";
autoCorelation.Histogram.Series["AutoCorelation"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
autoCorelation.Histogram.Series["AutoCorelation"].MarkerSize = 2;
autoCorelation.Histogram.ChartAreas[0].AxisX.Title = "Index";
autoCorelation.Histogram.ChartAreas[0].AxisY.Title = "AutoCorelation value";
for (int i = 0; i < _audio.autoCorrelations[0].Count(); i++)
{
autoCorelation.Histogram.Series["AutoCorelation"].Points.AddXY(i, _audio.autoCorrelations[0][i] / (32768.0f * 32768.0f * 100));
}
autoCorelation.Show();
SoundUtil.SaveSound(_audio.fileName, _audio.sampleRate, _audio.chunkSize, frequencies);
MessageBox.Show(freqText, "Autocorrelation frequencies");
}
}
private void cepstrumButton_Click(object sender, EventArgs e)
{
if (_audio != null)
{
actionStateLabel.Text = "PROCESSING";
List <int> frequencies = _audio.Cepstrum();
string freqText = "";
foreach (int freq in frequencies)
{
freqText += freq.ToString() + " Hz (T = " + (1.0f / freq) + " s), ";
}
actionStateLabel.Text = "";
CharWindow Cepstrum = new CharWindow();
Cepstrum.setPropert();
Cepstrum.Histogram.Series.Add("Cepstrum");
Cepstrum.Text = "Cepstrum";
Cepstrum.Histogram.Series["Cepstrum"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
Cepstrum.Histogram.Series["Cepstrum"].MarkerSize = 2;
Cepstrum.Histogram.ChartAreas[0].AxisX.Title = "Index";
Cepstrum.Histogram.ChartAreas[0].AxisY.Title = "Cepstrum value";
for (int i = 0; i < _audio.cepstrum.Count() / 2; i++)
{
Cepstrum.Histogram.Series["Cepstrum"].Points.AddXY(i, _audio.cepstrum[i].Modulus());
}
Cepstrum.Show();
CharWindow Spectrum = new CharWindow();
Spectrum.setPropert();
Spectrum.Histogram.Series.Add("Spectrum");
Spectrum.Text = "Spectrum";
Spectrum.Histogram.Series["Spectrum"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
Spectrum.Histogram.Series["Spectrum"].MarkerSize = 2;
Spectrum.Histogram.ChartAreas[0].AxisX.Title = "Index";
Spectrum.Histogram.ChartAreas[0].AxisY.Title = "Spectrum value";
float[] time = new float[_audio.fftDataForSpectrumChart.Length];
for (int i = 0; i < _audio.fftDataForSpectrumChart.Count() / 2; i++)
{
time[i] = i / _audio.sampleRate;
Spectrum.Histogram.Series["Spectrum"].Points.AddXY(i, _audio.fftDataForSpectrumChart[i].Modulus());
}
Spectrum.Show();
SoundUtil.SaveSound(_audio.fileName, _audio.sampleRate, _audio.chunkSize, frequencies);
MessageBox.Show(freqText, "Cepstrum frequencies");
}
}
private void notCausal_Click(object sender, EventArgs e)
{
int windowSize;
int hopSize;
int filterSize;
int fc;
int.TryParse(this.WindowSize.Text, out windowSize);
int.TryParse(this.R.Text, out hopSize);
int.TryParse(this.L.Text, out filterSize);
int.TryParse(this.Fc.Text, out fc);
Stopwatch time = new Stopwatch();
time.Start();
float[] result = _audio.FrequencyFiltration(windowSize, filterSize, fc, hopSize, windowType.SelectedIndex, "notCasual");
time.Stop();
MessageBox.Show(time.ElapsedMilliseconds.ToString() + " ms");
#region filterChar
CharWindow resultSignalChar = new CharWindow();
resultSignalChar.setPropert();
resultSignalChar.Histogram.Series.Add("WindowCharm");
resultSignalChar.Text = "SignalChar";
resultSignalChar.Histogram.Series["WindowCharm"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
resultSignalChar.Histogram.Series["WindowCharm"].MarkerSize = 2;
resultSignalChar.Histogram.ChartAreas[0].AxisX.Title = "Index";
resultSignalChar.Histogram.ChartAreas[0].AxisY.Title = "signal value";
for (int i = 0; i < result.Count(); i++)
{
resultSignalChar.Histogram.Series["WindowCharm"].Points.AddXY(i, result[i]);
}
resultSignalChar.Show();
#endregion
SoundUtil.SaveSound("freqNotCasualFilter", _audio.fileName, _audio.sampleRate, result);
}
