private void RefreshChart()
{
int[] soundData = SoundUtil.ExtractFirstChunk(_audio.data, _audio.chunkSize);
int sampleRate = _audio.sampleRate;
Histogram.Series.Clear();
Histogram.Series.Add("Signal");
this.Text = "Signal";
Histogram.Series["Signal"].ChartType = System.Windows.Forms.DataVisualization.Charting.SeriesChartType.FastLine;
Histogram.Series["Signal"].MarkerSize = 2;
float[] time = new float[soundData.Length];
float[] value = new float[soundData.Length];
for (int i = 0; i < soundData.Count(); i++)
{
value[i] = (float)soundData[i] / (float)sampleRate;
time[i] = i / sampleRate;
Histogram.Series["Signal"].Points.AddXY(time[i], value[i]);
}
Histogram.ChartAreas[0].AxisX.Title = "Time";
Histogram.ChartAreas[0].AxisY.Title = "Sample value";
}