/// <summary>
/// Initializes the object and generates a wave.
/// </summary>
/// <param name="type">The type of wave to generate</param>
public WaveGenerator(WaveExampleType type, int frequency, double volume)
{
// Init chunks
header = new WaveHeader();
format = new WaveFormatChunk();
data = new WaveDataChunk();
// Number of samples = sample rate * channels * bytes per sample
uint numSamples = format.dwSamplesPerSec * format.wChannels;
// Initialize the 16-bit array
data.shortArray = new short[numSamples];
data.shortArrayLength = numSamples;
// Calculate data chunk size in bytes and store it in the data chunk
data.dwChunkSize = (uint)(numSamples * (format.wBitsPerSample / 8));
// Max amplitude for 16-bit audio
int amplitude = (int)(MAX_AMPLITUDE_16BIT * volume);
// Create a double version of the frequency for easier math
double freq = (double)frequency;
// The "angle" used in the function, adjusted for the number of channels and sample rate.
// This value is like the period of the wave.
double t = (Math.PI * 2 * freq) / (format.dwSamplesPerSec * format.wChannels);
// Fill the data array with sample data
if (type == WaveExampleType.ExampleSineWave)
{
ExampleSineWave(numSamples, amplitude, t);
return;
}
if (type == WaveExampleType.ExampleSquareWave)
{
ExampleSquareWave(numSamples, amplitude, t);
return;
}
if (type == WaveExampleType.ExampleWhiteNoise)
{
ExampleWhiteNoise(numSamples, amplitude);
return;
}
if (type == WaveExampleType.ExampleSawtoothWave)
{
ExampleSawtoothWave(frequency, numSamples, amplitude);
return;
}
if (type == WaveExampleType.ExampleTriangleWave)
{
ExampleTriangleWave(frequency, numSamples, amplitude);
return;
}
}
/// <summary>
/// Initializes the object and generates a wave.
/// </summary>
/// <param name="type">The type of wave to generate</param>
public WaveGenerator(WaveExampleType type, int frequency, double volume)
{
// Init chunks
header = new WaveHeader();
format = new WaveFormatChunk();
data = new WaveDataChunk();
// Number of samples = sample rate * channels * bytes per sample
uint numSamples = format.dwSamplesPerSec * format.wChannels;
// Initialize the 16-bit array
data.shortArray = new short[numSamples];
data.shortArrayLength = numSamples;
// Calculate data chunk size in bytes and store it in the data chunk
data.dwChunkSize = (uint)(numSamples * (format.wBitsPerSample / 8));
// Max amplitude for 16-bit audio
int amplitude = (int)(MAX_AMPLITUDE_16BIT * volume);
// Create a double version of the frequency for easier math
double freq = (double)frequency;
// The "angle" used in the function, adjusted for the number of channels and sample rate.
// This value is like the period of the wave.
double t = (Math.PI * 2 * freq) / (format.dwSamplesPerSec * format.wChannels);
// Fill the data array with sample data
if (type == WaveExampleType.ExampleSineWave)
{
ExampleSineWave(numSamples, amplitude, t);
return;
}
if (type == WaveExampleType.ExampleSquareWave)
{
ExampleSquareWave(numSamples, amplitude, t);
return;
}
if (type == WaveExampleType.ExampleWhiteNoise)
{
ExampleWhiteNoise(numSamples, amplitude);
return;
}
if (type == WaveExampleType.ExampleSawtoothWave)
{
ExampleSawtoothWave(frequency, numSamples, amplitude);
return;
}
if (type == WaveExampleType.ExampleTriangleWave)
{
ExampleTriangleWave(frequency, numSamples, amplitude);
return;
}
}
