private void ModulationButton_Click(object sender, EventArgs e)
{
double A, f, fi, dutyFactor, AMod, fMod, fiMod, dutyMod;
Signal mainSignal = null, modalationSignal = null;
Modulation modulation = new Modulation();
SoundGenerator generator = new SoundGenerator();
if (IsCorrectDouble(ATextBox.Text, out A) && IsCorrectDouble(fTextBox.Text, out f) && IsCorrectDouble(fiTextBox.Text, out fi) &&
IsCorrectDouble(dutyTextBox.Text, out dutyFactor) && IsCorrectDouble(AModulationTextBox.Text, out AMod) && IsCorrectDouble(fModulationTextBox.Text, out fMod) &&
IsCorrectDouble(fiModulationTextBox.Text, out fiMod) && IsCorrectDouble(dutyModulationTextBox.Text, out dutyMod))
{
if (sinusoidRadioButton.Checked)
{
mainSignal = new SinusoidSignal(A, f, fi);
}
if (dutyCycleRadioButton.Checked)
{
mainSignal = new DutyCycleSignal(A, f, fi, dutyFactor);
}
if (triangleRadioButton.Checked)
{
mainSignal = new TriangleSignal(A, f, fi);
}
if (sawtoothedRadioButton.Checked)
{
mainSignal = new SawtoothedSignal(A, f, fi);
}
if (noiseRadioButton.Checked)
{
mainSignal = new NoiseSignal(A, f, fi);
}
if (SinusoidModulationRadioButton.Checked)
{
modalationSignal = new SinusoidSignal(AMod, fMod, fiMod);
}
if (DutyCycleModulationRadioButton.Checked)
{
modalationSignal = new DutyCycleSignal(AMod, fMod, fiMod, dutyMod);
}
if (triangleModulationRadioButton.Checked)
{
modalationSignal = new TriangleSignal(AMod, fMod, fiMod);
}
if (sawtoothedModulationRadioButton.Checked)
{
modalationSignal = new SawtoothedSignal(AMod, fMod, fiMod);
}
if (noiseModulationRadioButton.Checked)
{
modalationSignal = new NoiseSignal(AMod, fMod, fiMod);
}
if (AmplitudeModulationRadioButton.Checked)
{
DrawSignalByValues(modulation.GetAmplitudeModulation(mainSignal, modalationSignal, N));
generator.WriteSignalByValuesToFile(modulation.GetAmplitudeModulation(mainSignal, modalationSignal, samples));
}
else
{
DrawSignalByValues(modulation.GetFrequencyModulation(mainSignal, modalationSignal, N));
generator.WriteSignalByValuesToFile(modulation.GetFrequencyModulation(mainSignal, modalationSignal, samples));
}
generator.PlayCurrentFile();
}
}
static void Main(string[] args)
{
var amplitude = 1;
var maxValue = Int16.MaxValue;
var sampleRate = 44100;
var frequency = 1000;
var phase = 0;
var seconds = 3;
var dutyFactor = 0.5;
BaseSignal signal = new NoiseSignal()
{
Amplitude = amplitude * maxValue,
Frequency = frequency,
Phase = phase,
//DutyFactor = dutyFactor
};
var raw = new byte[sampleRate * seconds * 2];
for (int n = 0; n < sampleRate * seconds; n++)
{
var x = (double)n / sampleRate;
var sampleValue = signal.GetFunc(x);
var sample = (short)(sampleValue);
var bytes = BitConverter.GetBytes(sample);
raw[n * 2] = bytes[0];
raw[n * 2 + 1] = bytes[1];
}
//var multiple = 2.0 * frequency / sampleRate;
//for (int n = 0; n < sampleRate * seconds; n++)
//{
// var sampleSaw = ((n * multiple) % 2) - 1;
// var sampleValue = sampleSaw > 0 ? amplitude : -amplitude;
// var sample = (short)(sampleValue * Int16.MaxValue);
// var bytes = BitConverter.GetBytes(sample);
// raw[n * 2] = bytes[0];
// raw[n * 2 + 1] = bytes[1];
//}
var ms = new MemoryStream(raw);
var rs =
new RawSourceWaveStream(ms, new WaveFormat(sampleRate, 16, 1));
//var outpath = "example.wav";
//WaveFileWriter.CreateWaveFile(outpath, rs);
var wo = new WaveOutEvent();
wo.Init(rs);
wo.Play();
while (wo.PlaybackState == PlaybackState.Playing)
{
Thread.Sleep(500);
}
wo.Dispose();
//Console.ReadKey();
}
