public static float[] GenerateAudioTestData(int sampleRate, int secondsToSample)
{
int totalNumberOfSamples = sampleRate * secondsToSample;
float[] audioData = new float[totalNumberOfSamples];
BasicOscillatorProvider basic = new BasicOscillatorProvider();
int length = (int) MathUtils.RoundDown(totalNumberOfSamples / 22);
int offset = 0;
int startFrequency = 110;
basic.Amplitude = MathUtils.DecibelToAmplitude(-33);
basic.SetFrequency(startFrequency*1);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-30);
basic.SetFrequency(startFrequency*2);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-27);
basic.SetFrequency(startFrequency*3);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-24);
basic.SetFrequency(startFrequency*4);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-21);
basic.SetFrequency(startFrequency*5);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-18);
basic.SetFrequency(startFrequency*6);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-15);
basic.SetFrequency(startFrequency*7);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-12);
basic.SetFrequency(startFrequency*8);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-9);
basic.SetFrequency(startFrequency*9);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-6);
basic.SetFrequency(startFrequency*10);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-3);
basic.SetFrequency(startFrequency*11);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(0);
basic.SetFrequency(startFrequency*12);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
// Down again
basic.Amplitude = 1.0f;
basic.SetFrequency(startFrequency*11);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.9f;
basic.SetFrequency(startFrequency*10);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.8f;
basic.SetFrequency(startFrequency*9);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.7f;
basic.SetFrequency(startFrequency*8);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.6f;
basic.SetFrequency(startFrequency*7);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.5f;
basic.SetFrequency(startFrequency*6);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.4f;
basic.SetFrequency(startFrequency*5);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.3f;
basic.SetFrequency(startFrequency*4);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.2f;
basic.SetFrequency(startFrequency*3);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.1f;
basic.SetFrequency(startFrequency*2);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
return audioData;
}
public static float[] GenerateAudioTestData(int sampleRate, int secondsToSample)
{
int totalNumberOfSamples = sampleRate * secondsToSample;
float[] audioData = new float[totalNumberOfSamples];
BasicOscillatorProvider basic = new BasicOscillatorProvider();
int length = (int)MathUtils.RoundDown(totalNumberOfSamples / 22);
int offset = 0;
int startFrequency = 110;
basic.Amplitude = MathUtils.DecibelToAmplitude(-33);
basic.SetFrequency(startFrequency * 1);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-30);
basic.SetFrequency(startFrequency * 2);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-27);
basic.SetFrequency(startFrequency * 3);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-24);
basic.SetFrequency(startFrequency * 4);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-21);
basic.SetFrequency(startFrequency * 5);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-18);
basic.SetFrequency(startFrequency * 6);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-15);
basic.SetFrequency(startFrequency * 7);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-12);
basic.SetFrequency(startFrequency * 8);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-9);
basic.SetFrequency(startFrequency * 9);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-6);
basic.SetFrequency(startFrequency * 10);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(-3);
basic.SetFrequency(startFrequency * 11);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = MathUtils.DecibelToAmplitude(0);
basic.SetFrequency(startFrequency * 12);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
// Down again
basic.Amplitude = 1.0f;
basic.SetFrequency(startFrequency * 11);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.9f;
basic.SetFrequency(startFrequency * 10);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.8f;
basic.SetFrequency(startFrequency * 9);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.7f;
basic.SetFrequency(startFrequency * 8);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.6f;
basic.SetFrequency(startFrequency * 7);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.5f;
basic.SetFrequency(startFrequency * 6);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.4f;
basic.SetFrequency(startFrequency * 5);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SQUARE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.3f;
basic.SetFrequency(startFrequency * 4);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.TRIANGLE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.2f;
basic.SetFrequency(startFrequency * 3);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
offset += basic.Read(audioData, offset, length);
basic.Amplitude = 0.1f;
basic.SetFrequency(startFrequency * 2);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SAW);
offset += basic.Read(audioData, offset, length);
return(audioData);
}
private static void GenerateTestAudioFiles() {
// Generate test audio file section
AudioUtilsNAudio.GenerateAudioTestFile(44100, 5, "sine-test.wav");
int sampleRate = 44100;
int secondsToSample = 3;
int totalNumberOfSamples = sampleRate * secondsToSample;
float[] audioData = new float[totalNumberOfSamples];
BasicOscillatorProvider basic = new BasicOscillatorProvider();
basic.Amplitude = 0.8f;
basic.SetFrequency(11025);
basic.SetOscWaveshape(BasicOscillatorProvider.WAVESHAPE.SINE);
basic.Read(audioData, 0, totalNumberOfSamples);
AudioUtilsNAudio.WriteIEEE32WaveFileMono("sine-hi.wav", sampleRate, audioData);
}
