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");
}
}