//private double[] discreteFourierTransform(double[] data)
//{
// int n = data.Length;
// int m = n;// I use m = n / 2d;
// var real = new double[n];
// var imag = new double[n];
// var result = new double[m];
// double pi_div = 2.0 * Math.PI / n;
// Parallel.For(0, m, w =>
// {
// double a = w * pi_div;
// Parallel.For(0, n, t =>
// {
// real[w] += data[t] * Math.Cos(a * t);
// imag[w] += data[t] * Math.Sin(a * t);
// });
// result[w] = Math.Sqrt(real[w]);
// });
// Parallel.For(0, m, w =>
// {
// double a = w * pi_div;
// Parallel.For(0, n, t =>
// {
// real[w] += data[t] * Math.Cos(a * t);
// imag[w] += data[t] * Math.Sin(a * t);
// });
// result[w] = Math.Sqrt(real[w] * real[w] + imag[w] * imag[w]) / n;
// });
// return result;
//}
private void bgRekam_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
if (e.UserState.ToString() == "MuseCSharpLSL.Stimulus, Text: Stimulus")
{
Stimulus stimulus = (Stimulus)e.UserState;
if (e.ProgressPercentage == 1)
{
stimulus.perbaharuiStimulus("+");
}
if (e.ProgressPercentage == 2)
{
stimulus.perbaharuiStimulus(arah);
}
if (e.ProgressPercentage == 3)
{
stimulus.perbaharuiStimulus("");
}
stimulus.Show();
}
else
{
StimulusHuruf stimulusHuruf = (StimulusHuruf)e.UserState;
if (e.ProgressPercentage == 1)
{
stimulusHuruf.perbaharuiStimulus("+");
}
if (e.ProgressPercentage == 2)
{
stimulusHuruf.perbaharuiStimulus(arah);
}
if (e.ProgressPercentage == 3)
{
stimulusHuruf.perbaharuiStimulus("");
}
stimulusHuruf.Show();
}
}
private void rekam()
{
if (cbOtomatis.Checked != true)
{
if (cbRekamHuruf.Checked)
{
stimulusHuruf = new StimulusHuruf();
}
else
{
stimulus = new Stimulus();
}
}
groupLatih.Invoke((MethodInvoker) delegate { groupLatih.Enabled = false; });
var checkedButton = tlArah.Controls.OfType <RadioButton>()
.FirstOrDefault(r => r.Checked);
arah = checkedButton.Text;
var epoching = new List <float[]>();
var watch = new Stopwatch();
if (cbRekamHuruf.Checked)
{
bgRekam.ReportProgress(1, stimulusHuruf);
}
else
{
bgRekam.ReportProgress(1, stimulus);
}
watch.Start();
updateAktivitas("REST");
do
{
} while (watch.Elapsed.Seconds != 2);
watch.Restart();
if (cbRekamHuruf.Checked)
{
bgRekam.ReportProgress(2, stimulusHuruf);
}
else
{
bgRekam.ReportProgress(2, stimulus);
}
// read samples
float[,] buffer = new float[_chunks, _kanal];
double[] timestamps = new double[_chunks];
updateAktivitas("Rekam " + arah);
inlet = new liblsl.StreamInlet(results[0]);
do
{
int num = inlet.pull_chunk(buffer, timestamps);
for (int s = 0; s < num; s++)
{
var d = new float[_kanal];
for (int i = 0; i < _kanal; i++)
{
d[i] = buffer[s, i];
}
epoching.Add(d);
if (epoching.Count == _epocSizeTesting)
{
break;
}
}
} while (epoching.Count < _epocSizeTesting);
updateAktivitas(arah + " pengambilan +- " + watch.ElapsedMilliseconds + " ms");
watch.Restart();
if (cbRekamHuruf.Checked)
{
bgRekam.ReportProgress(3, stimulusHuruf);
}
else
{
bgRekam.ReportProgress(3, stimulus);
}
updateAktivitas("REST");
do
{
} while (watch.Elapsed.Seconds != 2);
watch.Stop();
if (cbOtomatis.Checked != true)
{
if (cbRekamHuruf.Checked)
{
this.Invoke((MethodInvoker) delegate
{
stimulusHuruf.Close();
});
}
else
{
this.Invoke((MethodInvoker) delegate
{
stimulus.Close();
});
}
}
var pecah = pecahSinyal(epoching);
var preprocess = preprocessSignal(pecah);
var dft = featureExtraction(preprocess);
var feature = dftToOneRowFeature(dft);
string dateTime = DateTime.Now.ToString("HH_mm_ss");
if (cbRekamHuruf.Checked)
{
saveFile(pecah, "RAW_HURUF", arah, dateTime);
saveFile(preprocess, "BPF_HURUF", arah, dateTime);
saveFile(dft, "DFT_HURUF", arah, dateTime);
saveFeature(feature, arah, "HURUF");
}
else
{
saveFile(pecah, "RAW_GAMBAR", arah, dateTime);
saveFile(preprocess, "BPF_GAMBAR", arah, dateTime);
saveFile(dft, "DFT_GAMBAR", arah, dateTime);
saveFeature(feature, arah, "GAMBAR");
}
groupLatih.Invoke((MethodInvoker) delegate { groupLatih.Enabled = true; });
}
private void bgRekam_DoWork(object sender, DoWorkEventArgs e)
{
if (cbRekamHuruf.Checked)
{
if (cbOtomatis.Checked == true)
{
stimulusHuruf = new StimulusHuruf();
for (int i = 0; i < (int)numPerulangan.Value; i++)
{
rbMaju.Invoke((MethodInvoker) delegate { rbMaju.Checked = true; });
rekam();
rbMundur.Invoke((MethodInvoker) delegate { rbMundur.Checked = true; });
rekam();
rbBerhenti.Invoke((MethodInvoker) delegate { rbBerhenti.Checked = true; });
rekam();
rbKiri.Invoke((MethodInvoker) delegate { rbKiri.Checked = true; });
rekam();
rbKanan.Invoke((MethodInvoker) delegate { rbKanan.Checked = true; });
rekam();
}
this.Invoke((MethodInvoker) delegate
{
stimulusHuruf.Close();
});
}
else
{
rekam();
}
}
else
{
if (cbOtomatis.Checked == true)
{
stimulus = new Stimulus();
for (int i = 0; i < (int)numPerulangan.Value; i++)
{
rbMaju.Invoke((MethodInvoker) delegate { rbMaju.Checked = true; });
rekam();
rbMundur.Invoke((MethodInvoker) delegate { rbMundur.Checked = true; });
rekam();
rbBerhenti.Invoke((MethodInvoker) delegate { rbBerhenti.Checked = true; });
rekam();
rbKiri.Invoke((MethodInvoker) delegate { rbKiri.Checked = true; });
rekam();
rbKanan.Invoke((MethodInvoker) delegate { rbKanan.Checked = true; });
rekam();
}
this.Invoke((MethodInvoker) delegate
{
stimulus.Close();
});
}
else
{
rekam();
}
}
cbOtomatis.Invoke((MethodInvoker) delegate { cbOtomatis.Checked = false; });
if (bgRekam.CancellationPending)
{
e.Cancel = true;
return;
}
}