private Vector <float> GetActivations(SpectralODF sODF, Detectors detectionFunction)
{
Vector <float> activations;
switch (detectionFunction)
{
case Detectors.HFC:
activations = sODF.HFC();
break;
case Detectors.SD:
activations = sODF.SD();
break;
case Detectors.SF:
activations = sODF.SF();
break;
case Detectors.MKL:
activations = sODF.MKL();
break;
case Detectors.PD:
activations = sODF.PD();
break;
case Detectors.WPD:
activations = sODF.WPD();
break;
case Detectors.NWPD:
activations = sODF.NWPD();
break;
case Detectors.CD:
activations = sODF.CD();
break;
case Detectors.RCD:
activations = sODF.RCD();
break;
default:
throw new Exception("Unsupported detection function");
break;
}
return(activations);
}
private void GetOnsets(Wav w, MemoryAllocator allocator)
{
//construct the spectrogram
var s = new Spectrogram(w, allocator, _options.WindowSize, _options.FPS, _options.Online, NeedPhaseInformation(_options.DetectionFunction));
//perform adaptive whitening
if (_options.AdaptiveWhitening)
{
s.AW(_options.AWFloor, _options.AWRelax);
}
//construct the filterbank
var filt = new Filter(_options.WindowSize / 2, w.Samplerate, allocator);
//filter the spectrogram
s.Filter(filt.Filterbank);
//take the log of the spectrogram
if (_options.Log)
{
s.Log(_options.LogMultiplier, _options.LogAdd);
}
//calculate the activations
var sodf = new SpectralODF(s, allocator);
var act = GetActivations(sodf, _options.DetectionFunction);
//detect the onsets
var o = new Onsets(act, _options.FPS);
o.Detect(_options.ActivationThreshold, _options.MinimumTimeDelta, delay: w.Delay * 1000);
var count = o.Detections.Count(f => f < (w.Delay + w.Padding));
//add the onsets to the collection
lock (_lock)
{
_onsets.AddRange(o.Detections.Skip(count));
_amplitudes.AddRange(o.Amplitudes.Skip(count));
}
_completed++;
ProgressReporter.Report(String.Format("{0}%", Math.Round((((float)_completed / _sliceCount)) * 100f)));
//cleanup
s.Cleanup();
filt.Cleanup();
}
private void GetOnsets(Wav w, MemoryAllocator allocator)
{
//construct the spectrogram
var s = new Spectrogram(w, allocator, _options.WindowSize, _options.FPS, _options.Online, NeedPhaseInformation(_options.DetectionFunction));
//perform adaptive whitening
if (_options.AdaptiveWhitening) s.AW(_options.AWFloor, _options.AWRelax);
//construct the filterbank
var filt = new Filter(_options.WindowSize / 2, w.Samplerate, allocator);
//filter the spectrogram
s.Filter(filt.Filterbank);
//take the log of the spectrogram
if (_options.Log) s.Log(_options.LogMultiplier, _options.LogAdd);
//calculate the activations
var sodf = new SpectralODF(s, allocator);
var act = GetActivations(sodf, _options.DetectionFunction);
//detect the onsets
var o = new Onsets(act, _options.FPS);
o.Detect(_options.ActivationThreshold, _options.MinimumTimeDelta, delay: w.Delay * 1000);
var count = o.Detections.Count(f => f < (w.Delay + w.Padding));
//add the onsets to the collection
lock (_lock)
{
_onsets.AddRange(o.Detections.Skip(count));
_amplitudes.AddRange(o.Amplitudes.Skip(count));
}
_completed++;
ProgressReporter.Report(String.Format("{0}%", Math.Round((((float)_completed / _sliceCount))*100f)));
//cleanup
s.Cleanup();
filt.Cleanup();
}
private Vector<float> GetActivations(SpectralODF sODF, Detectors detectionFunction)
{
Vector<float> activations;
switch (detectionFunction)
{
case Detectors.HFC:
activations = sODF.HFC();
break;
case Detectors.SD:
activations = sODF.SD();
break;
case Detectors.SF:
activations = sODF.SF();
break;
case Detectors.MKL:
activations = sODF.MKL();
break;
case Detectors.PD:
activations = sODF.PD();
break;
case Detectors.WPD:
activations = sODF.WPD();
break;
case Detectors.NWPD:
activations = sODF.NWPD();
break;
case Detectors.CD:
activations = sODF.CD();
break;
case Detectors.RCD:
activations = sODF.RCD();
break;
default:
throw new Exception("Unsupported detection function");
break;
}
return activations;
}