private void loadButton_Click(object sender, EventArgs e)
{
var fileDialog = new OpenFileDialog();
fileDialog.Filter = "Files (wav)|*.wav";
fileDialog.ShowDialog();
loadTextBox.Text = fileDialog.FileName;
listBox.Items.Clear();
pointsList.Clear();
FileStream fs = new FileStream(fileDialog.FileName, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
wav = new WAV(br, (int)fs.Length);
setListBox(wav);
br.Close();
fs.Close();
listBox.Visible = true;
spectrumChart.Visible = true;
spectrumChart.Series.Clear();
spectrumChart.Update();
spectrumChart.ResetAutoValues();
var tabCom = new Complex[1024];
float[] data = wav.getFloatData();
for (int i = 0; i < 1024; i++)
{
tabCom[i] = new Complex(data[i], 0);
}
FourierTransform.FFT(tabCom, FourierTransform.Direction.Forward);
for (int i = 0; i < 512; i++)
{
pointsList.Add(new Point()
{
x = (wav.header.sampleRate * i) / 511, y = tabCom[i].Magnitude * 1000
});
}
spectrumChart.Series.Clear();
spectrumChart.Series.Add("Spectrum");
foreach (var p in pointsList)
{
spectrumChart.Series["Spectrum"].Points.AddXY(p.x, p.y);
}
MessageBox.Show("File loaded!");
}
private void setListBox(WAV wav)
{
listBox.Items.Add("chunkID: " + wav.header.chunkID);
listBox.Items.Add("chunkSize: " + wav.header.chunkSize);
listBox.Items.Add("format: " + wav.header.format);
listBox.Items.Add("subchunk1ID: " + wav.header.subchunk1ID);
listBox.Items.Add("subchunk1Size: " + wav.header.subchunk1Size);
listBox.Items.Add("audioFormat: " + wav.header.audioFormat);
listBox.Items.Add("NumChannels: " + wav.header.numChanels);
listBox.Items.Add("SampleRate: " + wav.header.sampleRate);
listBox.Items.Add("ByteRate: " + wav.header.byteRate);
listBox.Items.Add("BlockAlign: " + wav.header.blockAlign);
listBox.Items.Add("BitsPerSample: " + wav.header.bitsPerSample);
listBox.Items.Add("subchunk2ID: " + wav.header.subchunk2ID);
listBox.Items.Add("subchunk2Size: " + wav.header.subchunk2Size);
}
