public void WriteWav(WavFile wavFile)
{
FileStream fsr = new FileStream(wavFile.path, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fsr);
string path = wavFile.path;
path = path.Insert(path.Length - 4, "(+)");
FileStream fsw = null;
try
{
fsw = new FileStream(path, FileMode.CreateNew);
}
catch (IOException)
{
fsw = new FileStream(path, FileMode.Truncate);
}
BinaryWriter w = new BinaryWriter(fsw);
int pos = 0, len = (int)r.BaseStream.Length; short temp;
while (pos < len)
{
temp = (short)r.ReadInt16();
//Working with the temp
w.Write(temp);
pos += 2;
}
r.Close(); w.Close();
fsr.Close(); fsw.Close();
}
// Returns left and right double arrays. 'right' will be null if sound is mono.
public void openWav(WavFile wavFile)
{
//path
FileStream fsr = new FileStream(wavFile.path, FileMode.Open, FileAccess.Read);
BinaryReader r = new BinaryReader(fsr);
try
{
wavFile.sGroupID = r.ReadChars(4);
wavFile.dwFileLength = r.ReadUInt32();
wavFile.sRiffType = r.ReadChars(4);
wavFile.sFChunkID = r.ReadChars(4);
wavFile.dwFChunkSize = r.ReadUInt32();
wavFile.wFormatTag = r.ReadUInt16();
wavFile.wChannels = r.ReadUInt16();
wavFile.dwSamplesPerSec = r.ReadUInt32();
wavFile.dwAvgBytesPerSec = r.ReadUInt32();
wavFile.wBlockAlign = r.ReadUInt16();
wavFile.wBitsPerSample = r.ReadUInt16();
wavFile.sDChunkID = r.ReadChars(4);
wavFile.dwDChunkSize = r.ReadUInt32();
wavFile.dataStartPos = (byte)r.BaseStream.Position;
int n = (int)(wavFile.dwFileLength / wavFile.wChannels * 8 / wavFile.wBitsPerSample);
wavFile.AudioDataArray = new byte[dwFileLength - 44];
for (int i = 0; i < dwFileLength - 44; i++)
{
wavFile.AudioDataArray [i] = r.ReadByte();
//wavFile.AudioDataArray[i] = sample / 32768f;
}
}
finally
{
r.Close();
fsr.Close();
}
}
private void button4_Click(object sender, EventArgs e)
{
if (openFileDialogWav.ShowDialog() == DialogResult.Cancel)
{
return;
}
// получаем выбранный файл
OurWav = new WavFile();
OurWav.path = openFileDialogWav.FileName;
// читаем файл в строку
OurWav.openWav(OurWav);
MessageBox.Show("Файл открыт");
for (int i = 0; i < OurWav.AudioDataArray.Length; i += 1600)
{
OurWav.AudioDataArray.Skip(i);
FFTandDraw(OurWav.AudioDataArray, 1600);
//Thread.Sleep(1000);
}
// Transform.FourierForward(OurWav.AudioDataArray, FourierOptions.Matlab);
// for (int i = 0; i < OurWav.AudioDataArray.Length/1024; i++)
// CreateGraph(zedGraphControl1, OurWav.AudioDataArray);
}
