private Point[] Init2()
{
WAVReader wAVReader = new WAVReader();
wAVReader.ReadWAVFile(fileName);
wAVReader = ZipWav(wAVReader);
//Complex[] complices = new Complex[frame];
canvasOs.Width = this.Width;
canvasOs.Height = this.Height;
int i_0 = 0;//前面为0的部分
while (wAVReader.stereos[i_0].Left == 0 && wAVReader.stereos[i_0].Right == 0)
{
i_0++;
}
Point[] points = new Point[wAVReader.stereos.Count - i_0];
for (int i = 0; i < points.Length; i++)
{
double x = (i * 1.0 / samplingRate) * unitOfOneSecond;
double y = TranY(wAVReader.stereos[i + i_0].Left / heightZipCount);
points[i] = new Point(x, y);
}
return(points);
}
private WaveMap GetWaveMaps(string fileName, float shiftNumber = 0, float deviation = 0, float threshold = 0)
{
WAVReader wAVReader = new WAVReader();
wAVReader.ReadWAVFile(fileName);
WAVReader newWAVReader = ZipWav(wAVReader);
EndpointDetection endpoint = new EndpointDetection();
newWAVReader = endpoint.EndpointDetectionDeal(newWAVReader);
//Stereo test169 = wAVReader.stereos[169];
//Stereo test170 = wAVReader.stereos[170];
//Stereo test171 = wAVReader.stereos[171];
//List<WaveMap> waveMaps = new List<WaveMap>();
Spectrogram spectrogram = new Spectrogram();
return(spectrogram.GetSpectrogram(newWAVReader.stereos, shiftNumber, deviation, threshold));
}
private void 打开ToolStripMenuItem_Click(object sender, EventArgs e)
{
System.GC.Collect();
OpenFileDialog dlg = new OpenFileDialog();
dlg.Filter = "波形文件|*.wav";
if (dlg.ShowDialog() == DialogResult.OK)
{
_wr = new WAVReader();
_wr.ReadWAVFile(dlg.FileName);
关闭文件ToolStripMenuItem.Enabled = true;
myChart.Datas = _wr.GetData();
myChart.sample_frequent = _wr.GetSamplesPerSec();
trackBar_move.Maximum = _wr.GetData().Length;
this.Text = "WaveViewer — " + dlg.SafeFileName;
AllMenuInitial(true);
myChart.Refresh();
}
}
private Point[] Init()
{
WAVReader wAVReader = new WAVReader();
wAVReader.ReadWAVFile(fileName);
Complex[] complices = new Complex[frame];
canvasOs.Width = this.Width;
canvasOs.Height = this.Height;
int i_0 = 0;//前面为0的部分
while (wAVReader.stereos[i_0].Left == 0 && wAVReader.stereos[i_0].Right == 0)
{
i_0++;
}
for (int i = 0; i < complices.Length; i++)
{
complices[i] = new Complex(wAVReader.stereos[i + i_0 + startNumber].Right * Hamming(i, frame), 0);
}
FourierTransform.DFT(complices, FourierTransform.Direction.Backward);
double max = 0;
Point[] points = new Point[frame];
for (int i = 0; i < points.Length; i++)
{
double x = (i * 1.0 / 44100) * unitOfOneSecond;
if (complices[i].Magnitude > max)
{
max = complices[i].Magnitude;
}
double y = TranY(complices[i].Magnitude / heightZipCount);
points[i] = new Point(x, y);
}
return(points);
}
private Point[] Init3()
{
WAVReader wAVReader = new WAVReader();
wAVReader.ReadWAVFile(fileName);
canvasOs.Width = this.Width;
canvasOs.Height = this.Height;
EndpointDetection endpointDetection = new EndpointDetection();
wAVReader = ZipWav(wAVReader);
wAVReader = endpointDetection.EndpointDetectionDeal(wAVReader);
Point[] points = new Point[wAVReader.stereos.Count];
for (int i = 0; i < points.Length; i++)
{
double x = (i * 1.0 / 44100) * unitOfOneSecond;
double y = TranY(wAVReader.stereos[i].Left / heightZipCount);
points[i] = new Point(x, y);
}
return(points);
}