/// <summary>
/// 构造SteppedSineWaveform
/// </summary>
/// <param name="sourceWaveform">源波形</param>
/// <param name="equalizer">均衡器</param>
public SteppedSineWaveform(SteppedSineWaveform sourceWaveform, SteppedSineEqualizer equalizer)
{
this.SampleRate = sourceWaveform.SampleRate;
double maxEqalizer = 0;
for (ushort i = 0; i < equalizer.GetPointsOfEQ(); i++)
{
// TODO 凌华的均衡器实际数值是倒数，待确认
maxEqalizer = Math.Abs(equalizer.GetEQ(i)) < maxEqalizer
? Math.Abs(equalizer.GetEQ(i))
: maxEqalizer;
}
this.Amplitude = sourceWaveform.Amplitude / (maxEqalizer > 0 ? maxEqalizer : 1);
this.FrequencyMax = sourceWaveform.FrequencyMax;
this.FrequencyMin = sourceWaveform.FrequencyMin;
this.Steps = sourceWaveform.Steps;
this.MinCycle = sourceWaveform.MinCycle;
this.MinDuration = sourceWaveform.MinDuration;
this.IsLog = sourceWaveform.IsLog;
this.IsInverse = sourceWaveform.IsInverse;
var waveform = new ManagedAudioLibrary.SteppedSineWaveform();
var rawWaveform = sourceWaveform.GetRawWaveform() as ManagedAudioLibrary.SteppedSineWaveform;
var rawEqualizer = equalizer.GetRawEqualizer() as ManagedAudioLibrary.SteppedSineEqualizer;
waveform.CreateData(rawWaveform, rawEqualizer);
RawWaveform = waveform;
}
/// <summary>
/// 构造SteppedSineWaveform
/// </summary>
/// <param name="sampleRate">采样率</param>
/// <param name="amplitude">波形幅度</param>
/// <param name="frequencyMin">最小频率</param>
/// <param name="frequencyMax">最大频率</param>
/// <param name="steps">频率阶数</param>
/// <param name="minCycle">最小周期数</param>
/// <param name="minDuration">单阶最小时间</param>
/// <param name="isLog">是否对数波形</param>
/// <param name="isInverse">是否反转</param>
public SteppedSineWaveform(double sampleRate, double amplitude,
double frequencyMin, double frequencyMax, ushort steps, ushort minCycle,
double minDuration, bool isLog = false, bool isInverse = false)
{
this.SampleRate = sampleRate;
this.Amplitude = amplitude;
this.FrequencyMax = frequencyMax;
this.FrequencyMin = frequencyMin;
this.Steps = steps;
this.MinCycle = minCycle;
this.MinDuration = minDuration;
this.IsLog = isLog;
this.IsInverse = isInverse;
var waveform = new ManagedAudioLibrary.SteppedSineWaveform();
waveform.CreateData(amplitude, frequencyMin, frequencyMax, steps, isLog, isInverse, minCycle,
minDuration, sampleRate);
RawWaveform = waveform;
}