private static int test03_generate16BitsMono440HzWAVFile()
{
WAV_file my_wav_file = new WAV_file();
my_wav_file.File_name = "test03_A440_16_Bits_Mono.wav";
Console.WriteLine("Nome: " + my_wav_file.File_name);
my_wav_file.Path = ".\\";
// my_wav_file.Path = ".\\Debug\\wav_files\\";
Console.WriteLine("Path: " + my_wav_file.Path);
const System.UInt32 C_SAMPLES_PER_SEC = 8000;
const System.UInt32 C_TIME_SEC = 5;
my_wav_file.BitsPerSample = WAV_file.BITS_PER_SAMPLE.BPS_16_BITS;
my_wav_file.NumOfChannels = WAV_file.NUM_CHANNELS.ONE;
my_wav_file.SampleRate = C_SAMPLES_PER_SEC;
my_wav_file.NumberOfSamples = C_SAMPLES_PER_SEC * C_TIME_SEC; // 5 segundos
my_wav_file.initializeWaveHeaderStructBeforeWriting();
System.Int16[] buffer_16_bits_Mono;
// Allocate the memory for the buffer.
my_wav_file.getBuffer_16_bits_mono(out buffer_16_bits_Mono);
// Fills the buffer with a sinusoidal.
float alphaAngle = 0;
const System.UInt32 C_SIGNAL_FREQUENCY = 440; // 440 Hz La (A)
for (uint i = 0; i < my_wav_file.NumberOfSamples; i++)
{
buffer_16_bits_Mono[i] = (System.Int16) (Math.Round(Math.Sin(alphaAngle) * System.Int16.MaxValue));
alphaAngle += (2 * (float)(Math.PI) * C_SIGNAL_FREQUENCY) / C_SAMPLES_PER_SEC;
}
my_wav_file.setBuffer_16_bits_mono(buffer_16_bits_Mono);
my_wav_file.writeFile();
return 0;
}
