// Transforms data into Time-Frequency representation
private void freqDomain()
{
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
int count = stftRep.wSamp / 2;
void Worker(int start, int end)
{
for (int jj = start; jj < end; jj++) //1024 times
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++) //4654 times
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
}
DoWorkInParallel(Worker, count);
/* for (int jj = 0; jj < stftRep.wSamp / 2; jj++) { //1024 times
* for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++) { //4654 times
* pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
* }
* }*/
}
// Transforms data into Time-Frequency representation
private void freqDomain()
{
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
}
// Transforms data into Time-Frequency representation
private void freqDomain()
{
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
//Parallel loop conversion
Parallel.For(0, stftRep.wSamp / 2, parOps, jj =>
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
});
}
// Transforms data into Time-Frequency representation
private void freqDomain()
{
//changing timefreq call to globle so we can access fft function in onsetdetection // didn't worked timefreq call needs input :(
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
}
// Transforms data into Time-Frequency representation
private void freqDomain()
{
stftRep = new timefreq(waveIn.wave, 2048); // Short term FT
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
// Create the bitmap for visualisation
// Work out the pixel array
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
}
private void writingparalleldata()
{
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
using (var outf = new StreamWriter("datafreq_parallel.txt"))
{
for (int i = 0; i < pixelArray.Length; i++)
{
outf.WriteLine(pixelArray[i].ToString());
}
}
using (var outf = new StreamWriter("ondetectiondata_parallel.txt"))
{
for (int i = 0; i < lengthscomp.Count; i++)
{
outf.WriteLine(lengthscomp[i].ToString());
}
for (int i = 0; i < noteStartscomp.Count; i++)
{
outf.WriteLine(noteStartscomp[i].ToString());
}
for (int i = 0; i < noteStopscomp.Count; i++)
{
outf.WriteLine(noteStopscomp[i].ToString());
}
for (int i = 0; i < pitchescomp.Count; i++)
{
outf.WriteLine(pitchescomp[i].ToString());
}
}
}
// Transforms data into Time-Frequency representation
public void freqDomain()
{
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
Parallel.For(0, stftRep.wSamp / 2, jj =>
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
});
//for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
//{
// for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
// {
// pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
// }
//}
}
// Transforms data into Time-Frequency representation
private void freqDomain()
{
stftRep = new timefreq(waveIn.wave, 2048);
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
//Overhead for both parallels are slower
//Parallel.For(0, stftRep.wSamp / 2, jj =>
//{
// for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
// {
// pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
// }
//});
int N = stftRep.wSamp / 2;
Parallel.For(0, N, threadNum =>
{
int chunk_size = (N + (NUM_THREADS_USED - 1)) / NUM_THREADS_USED;
int start = chunk_size * threadNum;
int end = Math.Min(start + chunk_size, N);
for (int jj = start; jj < end; jj++)
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
});
//for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
//{
// for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
// {
// pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
// }
//}
}
// Transforms data into Time-Frequency representation
private void freqDomain()
{
//filename = @"C:\CAB401data\wave_out";
//FileStream file = new FileStream(filename, FileMode.Open, FileAccess.Read);
//BinaryReader binRead = new BinaryReader(file);
//long length = new System.IO.FileInfo(filename).Length;
//float[] values = new float[length];
//for (int i = 0; i < length / 4; i++)
//{
// values[i] = binRead.ReadSingle();
//}
stftRep = new timefreq(waveIn.wave, 2048);
//int wSamp = 2048;
//filename = @"C:\CAB401data\timefreq_done";
//FileStream file = new FileStream(filename, FileMode.Open, FileAccess.Read);
//BinaryReader binRead = new BinaryReader(file);
//long length = new System.IO.FileInfo(filename).Length;
//float[] data = new float[length / 4];
//for (int idx = 0; idx < length / 4; idx++)
//{
// data[idx] = binRead.ReadSingle();
//}
//Console.WriteLine("Read freq: in elements? {1}, length in bytes {0}, ", length, length / 4);
//int A = wSamp / 2;
//int B = (int)(length / (4 * A));
/* for timefreq_out */
//pixelArray = new float[A * B];
//for (int ii = 0; ii < A; ii++)
//{
// for (int jj = 0; jj < B; jj++)
// {
// pixelArray[ii * B + jj] = data[ii * B + jj];
// }
//}
/* for timefreq_done */
//pixelArray = new float[A * B];
//for (int ii = 0; ii < A; ii++)
//{
// for (int jj = 0; jj < B; jj++)
// {
// pixelArray[ii * B + jj] = data[jj * A + ii]; // transpose
// }
//}
pixelArray = new float[stftRep.timeFreqData[0].Length * stftRep.wSamp / 2];
for (int jj = 0; jj < stftRep.wSamp / 2; jj++)
{
for (int ii = 0; ii < stftRep.timeFreqData[0].Length; ii++)
{
pixelArray[jj * stftRep.timeFreqData[0].Length + ii] = stftRep.timeFreqData[jj][ii];
}
}
}
