Ejemplo n.º 1
0
        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!");
        }
Ejemplo n.º 2
0
 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);
 }