private void LoadFile(string path, ArrayViewer waveViewer, ArrayViewer fftViewer)
{
FileStream fileStream = new FileStream(path, FileMode.Open);
BinaryReader binaryReader = new BinaryReader(fileStream);
short[] wave = new short[binaryReader.BaseStream.Length / 2];
int i = 0;
while (binaryReader.BaseStream.Position < binaryReader.BaseStream.Length)
{
uint a = binaryReader.ReadByte();
uint b = binaryReader.ReadByte();
wave[i] = (short)((a << 8) | b);
i++;
}
fileStream.Close();
fileStream.Dispose();
waveViewer.DrawWave(wave);
Application.DoEvents();
FFT2 fft2 = new FFT2();
fft2.init((uint)Math.Log((double)wave.Length, 2.0));
double[] re = new double[wave.Length];
double[] img = new double[wave.Length];
for (int j = 0; j < wave.Length; j++)
{
re[j] = wave[j];
img[j] = 0.0F;
}
fft2.run(re, img);
double[] modulo = new double[re.Length / 2];
for (int j = 0; j < modulo.Length; j++)
{
modulo[j] = Math.Sqrt((re[j] * re[j]) + (img[j] * img[j]));
}
int number = (int)(2048.0F * (float)modulo.Length / 8000.0F);
fftViewer.DrawWave(modulo.Take(number).ToArray());
}
private void LoadFile(string path, ArrayViewer waveViewer, ArrayViewer fftViewer)
{
FileStream fileStream = new FileStream(path, FileMode.Open);
BinaryReader binaryReader = new BinaryReader(fileStream);
short[] wave = new short[binaryReader.BaseStream.Length / 2];
int i = 0;
while (binaryReader.BaseStream.Position < binaryReader.BaseStream.Length)
{
uint a = binaryReader.ReadByte();
uint b = binaryReader.ReadByte();
wave[i] = (short)((a << 8) | b);
i++;
}
fileStream.Close();
fileStream.Dispose();
waveViewer.DrawWave(wave);
Application.DoEvents();
FFT2 fft2 = new FFT2();
fft2.init((uint)Math.Log((double)wave.Length, 2.0));
double[] re = new double[wave.Length];
double[] img = new double[wave.Length];
for (int j = 0; j < wave.Length; j++)
{
re[j] = wave[j];
img[j] = 0.0F;
}
fft2.run(re, img);
double[] modulo = new double[re.Length / 2];
for (int j = 0; j < modulo.Length; j++)
{
modulo[j] = Math.Sqrt((re[j] * re[j]) + (img[j] * img[j]));
}
int number = (int)(2048.0F*(float) modulo.Length/8000.0F);
fftViewer.DrawWave(modulo.Take(number).ToArray());
}
