/// <summary>
/// 分析SteppedLevelSine波形
/// </summary>
/// <param name="testData">测试波形</param>
/// <param name="refWaveform">参考波形</param>
/// <param name="peakToPeak">峰峰值</param>
/// <param name="thdInDb">谐波失真(dB)</param>
/// <param name="nrInDb">噪声比(dB)</param>
/// <param name="thdPlusNInDb">谐波失真和噪声与信号的比(dB)</param>
/// <param name="rms">有效电平</param>
public static void AnalyzeSteppedLevelSineWaveform(double[] testData, Waveform.SteppedLevelSineWaveform refWaveform,
out double[] peakToPeak, out double[] thdInDb, out double[] nrInDb, out double[] thdPlusNInDb, out double[] rms)
{
SteppedLevelSineAnalyzer analyzer = new SteppedLevelSineAnalyzer();
ManagedAudioLibrary.SteppedLevelSineWaveform rawWaveform =
refWaveform.GetRawWaveform() as ManagedAudioLibrary.SteppedLevelSineWaveform;
analyzer.SetReferenceWaveform(rawWaveform);
double[] refData = refWaveform.GetWaveData();
uint pathDelay = AnalyzePathDelay(testData, refData);
analyzer.SetDataDelayCounts(pathDelay);
analyzer.Analyze(testData, (uint)testData.Length);
peakToPeak = new double[rawWaveform.GetNumberOfSteps()];
thdInDb = new double[rawWaveform.GetNumberOfSteps()];
nrInDb = new double[rawWaveform.GetNumberOfSteps()];
thdPlusNInDb = new double[rawWaveform.GetNumberOfSteps()];
rms = new double[rawWaveform.GetNumberOfSteps()];
for (ushort i = 0; i < rawWaveform.GetNumberOfSteps(); i++)
{
peakToPeak[i] = analyzer.GetPeakToPeak(i);
thdInDb[i] = analyzer.GetThd(i);
nrInDb[i] = analyzer.GetNoiseRatio(i);
thdPlusNInDb[i] = analyzer.GetThdPlusN(i);
rms[i] = analyzer.GetRMS(i);
}
}