static Dictionary <double, float[]> GetGainDifferences(List <HRTFSetEntry> entries, List <double> hValues)
{
Dictionary <double, float[]> result = new Dictionary <double, float[]>(); // Distance; array by hValues
for (int entry = 0, count = entries.Count; entry < count; ++entry)
{
HRTFSetEntry setEntry = entries[entry];
float maxGain = float.MinValue, minGain = float.MaxValue;
for (int channel = 0; channel < setEntry.Data.Length; ++channel)
{
float peak = QMath.GainToDb(WaveformUtils.GetRMS(setEntry.Data[channel]));
if (maxGain < peak)
{
maxGain = peak;
}
if (minGain > peak)
{
minGain = peak;
}
}
if (!result.ContainsKey(setEntry.Distance))
{
result[setEntry.Distance] = new float[hValues.Count];
}
result[setEntry.Distance][hValues.IndexOf(setEntry.Azimuth)] = maxGain - minGain;
}
return(result);
}
static Dictionary <double, int[]> GetDelayDifferences(List <HRTFSetEntry> entries, List <double> hValues)
{
Dictionary <double, int[]> result = new Dictionary <double, int[]>(); // Distance; array by hValues
for (int entry = 0, count = entries.Count; entry < count; ++entry)
{
HRTFSetEntry setEntry = entries[entry];
int maxDelay = 0, minDelay = int.MaxValue;
for (int channel = 0; channel < setEntry.Data.Length; ++channel)
{
float[] data = setEntry.Data[channel];
int delay = 0;
float firstValid = WaveformUtils.GetPeak(data) * m20dB;
while (delay < data.Length && Math.Abs(data[delay]) < firstValid)
{
++delay;
}
if (maxDelay < delay)
{
maxDelay = delay;
}
if (minDelay > delay)
{
minDelay = delay;
}
}
if (!result.ContainsKey(setEntry.Distance))
{
result[setEntry.Distance] = new int[hValues.Count];
}
result[setEntry.Distance][hValues.IndexOf(setEntry.Azimuth)] = maxDelay - minDelay;
}
return(result);
}