private void UpdatePhaseResponse()
{
var fr = _filter.FrequencyResponse();
switch (phaseViewComboBox.Text)
{
case "Phase unwrapped":
phaseResponsePanel.Line = fr.PhaseUnwrapped.ToFloats();
break;
case "Group delay":
phaseResponsePanel.Line = _filter.Tf.GroupDelay().ToFloats();
// or like this:
// fr.GroupDelay.ToFloats();
break;
case "Phase delay":
phaseResponsePanel.Line = _filter.Tf.PhaseDelay().ToFloats();
// or like this:
// fr.PhaseDelay.ToFloats();
break;
default:
phaseResponsePanel.Line = fr.Phase.ToFloats();
break;
}
}
private void buttonAnalyzeFilter_Click(object sender, EventArgs e)
{
Cursor.Current = Cursors.WaitCursor;
switch (filterTypesComboBox.Text)
{
case "Custom IIR":
AnalyzeCustomIirFilter();
break;
case "Custom FIR":
AnalyzeCustomFirFilter();
break;
case "BiQuad LP":
case "BiQuad HP":
case "BiQuad BP":
case "BiQuad notch":
case "BiQuad allpass":
case "BiQuad peaking":
case "BiQuad lowshelf":
case "BiQuad highshelf":
AnalyzeBiQuadFilter(filterTypesComboBox.Text);
break;
case "One-pole LP":
_filter = new Filters.OnePole.LowPassFilter(0.25);
break;
case "One-pole HP":
_filter = new Filters.OnePole.HighPassFilter(0.25);
break;
case "Comb feed-forward":
_filter = new CombFeedforwardFilter(500);
break;
case "Comb feed-back":
_filter = new CombFeedbackFilter(1800);
break;
case "Moving average":
AnalyzeMovingAverageFilter();
break;
case "Moving average recursive":
AnalyzeRecursiveMovingAverageFilter();
break;
case "Pre-emphasis":
AnalyzePreemphasisFilter();
break;
case "De-emphasis":
_filter = new DeEmphasisFilter();
break;
case "DC removal":
_filter = new DcRemovalFilter();
break;
case "RASTA":
_filter = new RastaFilter();
break;
case "Butterworth":
AnalyzeButterworthFilter();
break;
case "Custom LP/HP":
AnalyzeCustomLpFilter();
break;
}
magnitudeResponsePanel.Line = _filter.FrequencyResponse().Magnitude.ToFloats();
UpdatePhaseResponse();
if (_filter.Tf.Numerator.Length + _filter.Tf.Denominator.Length < 50)
{
poleZeroPanel.Zeros = _filter.Tf.Zeros;
poleZeroPanel.Poles = _filter.Tf.Poles;
}
numeratorListBox.DataSource = _filter.Tf.Numerator;
denominatorListBox.DataSource = _filter.Tf.Denominator;
//using (var csv = new FileStream("fir.csv", FileMode.Open))
//{
// _filter = FirFilter.FromCsv(csv);
//}
Cursor.Current = Cursors.Default;
}