public void SingleToneAnalysisTest()
{
const int FFT_SIZE = 256;
const double SNR = 40;
double noiseLevel = Math.Pow(10, SNR / (-20.0));
Random rnd = new Random();
double amplitude = 1.0;
double freq = (rnd.NextDouble() * (FFT_SIZE / 2.0 - 4.0) + 2.0) / FFT_SIZE / 4.0;
//double freq = 8.5 / FFT_SIZE;
double phase = rnd.NextDouble() * 2.0 * Math.PI;
//double phase = 0.375 * 2.0 * Math.PI;
double[] noise = Generate.Normal(FFT_SIZE, 0.0, noiseLevel);
double[] wave = Generate.Sinusoidal(FFT_SIZE, 1.0, freq, amplitude, 0.0, phase);
for (int i = 0; i < FFT_SIZE; i++)
{
wave[i] += noise[i];
}
ToneInfo toneInfo = ToneAnalyzer.SingleToneAnalysis(wave);
Assert.IsTrue(Math.Abs(toneInfo.Frequency - freq) < 1.0E-3, "Frequency not equal.");
double phaseErr = (toneInfo.Phase - phase) / (2.0 * Math.PI);
phaseErr -= Math.Round(phaseErr);
Assert.IsTrue(Math.Abs(phaseErr) < 1.0E-3, "Phase not equal.");
Assert.IsTrue(Math.Abs(toneInfo.Amplitude - amplitude) < 1.0E-2, "Amplitude not equal.");
}
public void RecordToneInfo(ToneInfo toneInfo)
{
if (PlayedTonesCache.Count == PlayedTonesCacheSize)
{
PlayedTonesCache.RemoveAt(0);
}
PlayedTonesCache.Add(toneInfo);
}
// PLAYS A SPECIFIC TONE
public void PlayTone(string instrument, ToneDuration duration, MusicTone tone, int octave)
{
string toneClipName = instrument + Underline + duration.ToString() + Underline + tone + Underline + octave;
Debug.Log(toneClipName);
ToneInfo info = new ToneInfo()
{
Tone = tone,
Octave = octave,
Duration = duration,
TimeOfPlaySinceStartup = Time.realtimeSinceStartup
};
RecordToneInfo(info);
AudioController.Play(toneClipName);
}
internal ToneReceivedEvent(ToneInfo toneInfo, string callLegId)
{
ToneInfo = toneInfo;
CallLegId = callLegId;
}
public static ToneReceivedEvent ToneReceivedEvent(ToneInfo toneInfo = default, string callConnectionId = default)
{
return(new ToneReceivedEvent(toneInfo, callConnectionId));
}
