private void generateSignalButton_Click(object sender, EventArgs e)
{
var sampleCount = int.Parse(durationTextBox.Text);
var samplingRate = _signal1?.SamplingRate ?? 16000;
SignalBuilder signalBuilder;
switch (builderComboBox.Text)
{
case "Sinusoid":
signalBuilder = new SineBuilder();
_signal2 = signalBuilder
.SetParameter("low", -0.4f)
.SetParameter("high", 0.4f)
.SetParameter("freq", 233 /*Hz*/)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Sawtooth":
signalBuilder = new SawtoothBuilder();
_signal2 = signalBuilder
.SetParameter("low", -0.3f)
.SetParameter("high", 0.3f)
.SetParameter("freq", 233 /*Hz*/)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Triangle Wave":
signalBuilder = new TriangleWaveBuilder();
_signal2 = signalBuilder
.SetParameter("low", -0.3f)
.SetParameter("high", 0.3f)
.SetParameter("freq", 233 /*Hz*/)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Square Wave":
signalBuilder = new SquareWaveBuilder();
_signal2 = signalBuilder
.SetParameter("low", -0.25f)
.SetParameter("high", 0.25f)
.SetParameter("freq", 233 /*Hz*/)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Pulse Wave":
signalBuilder = new PulseWaveBuilder();
_signal2 = signalBuilder
.SetParameter("min", 0)
.SetParameter("max", 0.5f)
.SetParameter("pulse", 0.007f /*sec*/)
.SetParameter("period", 0.020f /*sec*/)
.OfLength(sampleCount)
.DelayedBy(50)
.SampledAt(samplingRate)
.Build();
break;
case "Chirp":
signalBuilder = new ChirpBuilder();
_signal2 = signalBuilder
.SetParameter("min", -0.3f)
.SetParameter("max", 0.3f)
.OfLength(sampleCount)
.RepeatedTimes(3)
.SampledAt(samplingRate)
.Build();
break;
case "Sinc":
signalBuilder = new SincBuilder();
_signal2 = signalBuilder
.SetParameter("min", 0)
.SetParameter("max", 0.5f)
.SetParameter("freq", 700 /*Hz*/)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Ramp":
signalBuilder = new RampBuilder();
_signal2 = signalBuilder
.SetParameter("slope", 0.0007f)
.SetParameter("intercept", -0.5f)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "AWGN":
signalBuilder = new AwgnBuilder();
_signal2 = signalBuilder
.SetParameter("sigma", 0.25f)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Pink Noise":
signalBuilder = new PinkNoiseBuilder();
_signal2 = signalBuilder
.SetParameter("min", -0.5f)
.SetParameter("max", 0.5f)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Red Noise":
signalBuilder = new RedNoiseBuilder();
_signal2 = signalBuilder
.SetParameter("min", -0.5f)
.SetParameter("max", 0.5f)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
case "Perlin Noise":
signalBuilder = new PerlinNoiseBuilder();
_signal2 = signalBuilder
.SetParameter("min", -0.3f)
.SetParameter("max", 0.7f)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
default:
signalBuilder = new WhiteNoiseBuilder();
_signal2 = signalBuilder
.SetParameter("min", -0.5f)
.SetParameter("max", 0.5f)
.OfLength(sampleCount)
.SampledAt(samplingRate)
.Build();
break;
}
builderParametersListBox.Items.Clear();
builderParametersListBox.Items.AddRange(signalBuilder.GetParametersInfo());
builderParametersListBox.Items.Add("");
builderParametersListBox.Items.Add($"min: {_signal2.Samples.Min():F2}");
builderParametersListBox.Items.Add($"max: {_signal2.Samples.Max():F2}");
builderParametersListBox.Items.Add($"avg: {_signal2.Samples.Average():F4}");
if (_signal1 != null)
{
//_signal3 = _signal1 + _signal2;
var positions = Enumerable.Range(0, 3).Select(pos => pos * (_signal2.Length + 2000)).ToArray();
_signal3 = _signal1.SuperimposeMany(_signal2, positions);
superimposedSignalPanel.Signal = _signal3;
}
generatedSignalPanel.Stride = 1;
generatedSignalPanel.Signal = _signal2;
var spectrum = _fft.PowerSpectrum(_signal2.First(512));
spectrumPanel.Line = spectrum.Samples;
spectrumPanel.ToDecibel();
}
private void applyEffectButton_Click(object sender, EventArgs e)
{
AudioEffect effect;
var fs = _signal.SamplingRate;
var winSize = int.Parse(winSizeTextBox.Text);
var hopSize = int.Parse(hopSizeTextBox.Text);
var tsm = (TsmAlgorithm)tsmComboBox.SelectedIndex;
var shift = float.Parse(pitchShiftTextBox.Text);
if (tremoloRadioButton.Checked)
{
var freq = float.Parse(tremoloFrequencyTextBox.Text);
var index = float.Parse(tremoloIndexTextBox.Text);
effect = new TremoloEffect(fs, freq, index);
}
else if (overdriveRadioButton.Checked)
{
var gain = float.Parse(distortionGainTextBox.Text);
effect = new OverdriveEffect(gain);
}
else if (distortionRadioButton.Checked)
{
var gain = float.Parse(distortionGainTextBox.Text);
effect = new DistortionEffect(gain);
}
else if (tubeDistortionRadioButton.Checked)
{
var gain = float.Parse(distortionGainTextBox.Text);
var mix = float.Parse(wetTextBox.Text);
var dist = float.Parse(distTextBox.Text);
var q = float.Parse(qTextBox.Text);
effect = new TubeDistortionEffect(gain, mix, q, dist);
}
else if (echoRadioButton.Checked)
{
var delay = float.Parse(echoDelayTextBox.Text);
var decay = float.Parse(echoDecayTextBox.Text);
effect = new EchoEffect(fs, delay, decay);
}
else if (delayRadioButton.Checked)
{
var delay = float.Parse(echoDelayTextBox.Text);
var decay = float.Parse(echoDecayTextBox.Text);
effect = new DelayEffect(fs, delay, decay);
}
else if (wahwahRadioButton.Checked)
{
var lfoFrequency = float.Parse(lfoFreqTextBox.Text);
var minFrequency = float.Parse(minFreqTextBox.Text);
var maxFrequency = float.Parse(maxFreqTextBox.Text);
var q = float.Parse(lfoQTextBox.Text);
//effect = new WahwahEffect(fs, lfoFrequency, minFrequency, maxFrequency, q);
effect = new AutowahEffect(fs, minFrequency, maxFrequency, q);
}
else if (flangerRadioButton.Checked)
{
var lfoFrequency = float.Parse(lfoFreqTextBox.Text);
var maxDelay = float.Parse(maxDelayTextBox.Text);
effect = new FlangerEffect(fs, maxDelay, lfoFrequency);
}
else if (pitchShiftRadioButton.Checked)
{
effect = pitchShiftCheckBox.Checked ? new PitchShiftEffect(shift, winSize, hopSize, tsm) : null;
//effect = pitchShiftCheckBox.Checked ? new WhisperEffect(hopSize, winSize) : null;
//effect = new MorphEffect(hopSize, winSize);
}
else
{
var lfoFrequency = float.Parse(lfoFreqTextBox.Text);
var minFrequency = float.Parse(minFreqTextBox.Text);
var maxFrequency = float.Parse(maxFreqTextBox.Text);
var q = float.Parse(lfoQTextBox.Text);
var lfo = new SawtoothBuilder()
.SetParameter("freq", lfoFrequency)
.SetParameter("min", minFrequency)
.SetParameter("max", maxFrequency)
.SampledAt(_signal.SamplingRate);
effect = new PhaserEffect(fs, lfo, q);
}
if (effect != null)
{
effect.Wet = float.Parse(wetTextBox.Text);
effect.Dry = float.Parse(dryTextBox.Text);
_filteredSignal = effect.ApplyTo(_signal, FilteringMethod.Auto);
//DiscreteSignal morph;
//using (var stream = new FileStream(@"D:\Docs\Research\DATABASE\Dictor1\wav\gtr16khz.wav", FileMode.Open))
//{
// var waveFile = new WaveFile(stream);
// morph = waveFile[Channels.Average];
//}
//_filteredSignal = ((MorphEffect)effect).ApplyTo(_signal, morph);
}
else
{
_filteredSignal = Operation.TimeStretch(_signal, shift, tsm);
//Operation.TimeStretch(_signal, shift, winSize, hopSize, tsm);
}
signalAfterFilteringPanel.Signal = _filteredSignal;
spectrogramAfterFilteringPanel.Spectrogram = _stft.Spectrogram(_filteredSignal.Samples);
}
