private void button2_Click_2(object sender, EventArgs e)
{
if (graph2FrequencyRanges.Count > 0)
{
FrequencyRange frequencyRange = graph2FrequencyRanges.Pop();
long lowerIndex = (long)((frequencyRange.lower - dataLowerFrequency) / binSize);
long upperIndex = (long)((frequencyRange.upper - dataLowerFrequency) / binSize);
graph2LowerFrequency = frequencyRange.lower;
graph2UpperFrequency = frequencyRange.upper;
if (series1BinData != null)
{
RangeChanged(chart2, series1BinData.dataSeries, series1BinData.avgBinArray, lowerIndex, upperIndex, graph2LowerFrequency, ref graph2BinFreqInc);
}
if (series2BinData != null)
{
RangeChanged(chart2, series2BinData.dataSeries, series2BinData.avgBinArray, lowerIndex, upperIndex, graph2LowerFrequency, ref graph2BinFreqInc);
}
if (series1BinData != null && series2BinData != null)
{
GraphDifference(series1BinData, series2BinData);
}
}
}
/// <summary>
/// Grab samples out of the data container, belonging to the given freqRange.
/// Time - is the desired track time we're grabbing samples from.
/// </summary>
/// <param name="freqRange"></param>
/// <param name="time"></param>
/// <returns></returns>
public float[] GetSamples(FrequencyRange freqRange, float time)
{
if (time > clipLength)
{
//return empty samples if the song has ended
return(new float[bufferSize]);
}
List <Array> samples = GetSampleArray(freqRange);
float percentThroughSong = time / clipLength;
int sampleIndex = (int)((samples.Count - 1) * percentThroughSong);
if (percentThroughSong < 0)
{
sampleIndex = 0;
}
if (samples.Count == 0)
{
Debug.LogError("Error: samples in the FrequencyRange: " + freqRange + " were not recorded for this file");
return(null);
}
return(samples[sampleIndex].data);
}
/// <summary>
/// Grab the correct sample storage list based on FrequencyRange
/// </summary>
/// <param name="freqRange"></param>
/// <returns></returns>
public List <Array> GetSampleArray(FrequencyRange freqRange)
{
switch (freqRange)
{
case FrequencyRange.SubBase:
return(subBassSamples);
case FrequencyRange.Bass:
return(bassSamples);
case FrequencyRange.LowMidrange:
return(lowMidSamples);
case FrequencyRange.Midrange:
return(midSamples);
case FrequencyRange.UpperMidrange:
return(upperMidSamples);
case FrequencyRange.High:
return(highSamples);
case FrequencyRange.VeryHigh:
return(veryHighSamples);
default:
case FrequencyRange.Decibal:
return(decibalSamples);
}
}
//like GetAvg or GetRMS, but inside a given frequency range
public float GetFrequencyVol(int audioSourceIndex, FrequencyRange freqRange)
{
// if (!audioSources[audioSourceIndex].mute) // if not muted
// {
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x; //Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y; //Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
for (int i = n1; i <= n2; i++)
{
if (i < freqData.Length)
{
sum += Mathf.Abs(freqData[i]);
}
}
sum = sum * audioSources[audioSourceIndex].volume;
return(sum / (n2 - n1 + 1));
// }
//
// return 0;
}
//return the raw spectrum data i nthe given frequency range.
public float[] GetFrequencyData(int audioSourceIndex, FrequencyRange freqRange)
{
// if (!audioSources[audioSourceIndex].mute) // if not muted
// {
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x; //Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y; //Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
List <float> validData = new List <float>();
for (int i = n1; i <= n2; i++)
{
validData.Add(freqData[i] * audioSources[audioSourceIndex].volume);
}
float[] normData = NormalizeArray(validData.ToArray());
return(normData);
// }
//
// Debug.LogWarning("warning: Audio Source: " + audioSourceIndex + " is muted");
// return new float[samplesToTake];
}
//like GetAvg or GetRMS, but inside a given frequency range
public float GetFrequencyVol(int audioSourceIndex, FrequencyRange freqRange, bool useAudioFile, bool useSilent = false)
{
//grab the correct audio source, from the correct list! Prebeat or normal
AudioSource source = useSilent ? silentAudio.audioSources[audioSourceIndex] : audioSources[audioSourceIndex];
if (!source.mute) // if not muted
{
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x; //Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y; //Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
if (useAudioFile)
{
freqData = GetAudioData(audioSourceIndex).GetSamples(freqRange, audioTimer);
}
else
{
source.GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
}
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
for (int i = n1; i <= n2; i++)
{
if (i < freqData.Length && i >= 0)
{
sum += Mathf.Abs(freqData[i]);
}
}
//multiply by volume if we're not using mic input, where volume is set to 0 to avoid feedback issues;
if (usingMic)
{
//zero out the sum if we don't meet the min microphone volume requirement
if (sum < micVolumeThreshold)
{
if (debug)
{
Debug.Log("Mic Filtered Out: " + sum + "<" + micVolumeThreshold);
}
sum = 0;
}
}
else
{
sum = sum * source.volume;
}
float frequency = sum / (n2 - n1 + 1);
//Debug.Log("Freq: " + frequency);
return(frequency);
}
return(0);
}
public static FrequencyRange GetIndicesForFrequencyRange(long specifiedLowerFrequency, long specifiedUpperFrequency, long dataLowerFrequency, double binFrequencySize)
{
long lowerIndex = (long)(Math.Round((specifiedLowerFrequency - dataLowerFrequency) / binFrequencySize));
long upperIndex = (long)(Math.Round((specifiedUpperFrequency - dataLowerFrequency) / binFrequencySize));
FrequencyRange frequencyRange = new FrequencyRange(lowerIndex, upperIndex);
return(frequencyRange);
}
//return the raw spectrum data i nthe given frequency range, using the specified number of bins
public float[] GetFrequencyData(int audioSourceIndex, FrequencyRange freqRange, int numBins, bool abs, bool useAudioFile)
{
if (audioSources[audioSourceIndex].mute && !useAudioFile)
{
Debug.LogWarning("warning: Audio Source: " + audioSourceIndex + " is muted");
return(new float[numBins]);
}
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x; //Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y; //Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
if (useAudioFile)
{
freqData = GetAudioData(audioSourceIndex).GetSamples(freqRange, audioTimer);
}
else
{
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
}
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
//Debug.Log("Sampling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
//Debug.Log("Valid Freq Data: (" + n1 + "-" + n2 + ")/" + samplesToTake);
string f = "";
List <float> validData = new List <float>();
for (int i = n1; i <= n2; i++)
{
float frequency = freqData[i];
if (abs)
{
frequency = Mathf.Abs(freqData[i]);
}
//multiply by volume if we're not using mic input, where volume is set to 0 to avoid feedback issues;
if (!usingMic)
{
frequency = frequency * audioSources[audioSourceIndex].volume;
}
validData.Add(frequency);
f += frequency.ToString() + " , ";
}
//Debug.Log("validData: " + f);
//Debug.Log("NumBins: " + numBins);
float[] binnedArray = GetBinnedArray(validData.ToArray(), numBins);
float[] normalizedArray = NormalizeArray(binnedArray);
return(normalizedArray);
}
void Update()
{
var microphoneInput = MicrophoneInput.Instance;
if (microphoneInput != null)
{
var newExcitation = FrequencyRange.Overlap(microphoneInput.Spectrum, ModeGraphic.ExcitationFrequency);
var mode = ModeGraphic.VibrationalMode;
var target = Mathf.Clamp01(newExcitation);
mode.Excitation =
Mathf.MoveTowards(mode.Excitation, target, (target > mode.Excitation ? 1f : 0.25f) * Time.deltaTime * 2f);
}
}
public float[] GetFrequencyRange(FrequencyRange frequencyRange)
{
switch (frequencyRange)
{
case FrequencyRange.SubBase:
return(new float[2] {
0, 60
});
case FrequencyRange.Bass:
return(new float[2] {
60, 250
});
case FrequencyRange.LowMidrange:
return(new float[2] {
250, 500
});
case FrequencyRange.Midrange:
return(new float[2] {
500, 2000
});
case FrequencyRange.UpperMidrange:
return(new float[2] {
2000, 4000
});
case FrequencyRange.High:
return(new float[2] {
4000, 6000
});
case FrequencyRange.VeryHigh:
return(new float[2] {
6000, 20000
});
case FrequencyRange.Decibel:
return(new float[2] {
0, 20000
});
default:
Debug.LogError("GetFrequencyRange: value out of range");
return(new float[2] {
float.NaN, float.NaN
});
}
}
public static float Overlap(FrequencyRange reading, FrequencyRange area)
{
float v = 0f;
float tot = 0f;
for (var i = 0; i < reading.Length; i++)
{
var inputValue = reading.FrequencyData [i];
var targetValue = area.FrequencyData [i];
v += Mathf.Clamp01(inputValue / targetValue) * targetValue;
tot += targetValue;
}
return(v / tot);
}
void OnSetMode(VibrationalMode mode)
{
this.VibrationalMode = mode;
var spectrum = new float[AppManager.Instance.NumberOfFrequencies];
var maximumFrequency = AppManager.Instance.MaximumFrequency;
var resonanceFrequency = AudioFrequency;
for (int i = 0; i < spectrum.Length; i++)
{
float freq = (1f * i / spectrum.Length) * maximumFrequency;
spectrum [i] = GaussianScale * Mathf.Exp(-Mathf.Pow(GaussianStrength * (freq - resonanceFrequency), 2));
}
ExcitationFrequency = new FrequencyRange(spectrum, 0, maximumFrequency);
}
public static Vector2 GetFreqForRange(FrequencyRange freqRange)
{
switch (freqRange)
{
case FrequencyRange.SubBase:
return(new Vector2(20, 60));
break;
case FrequencyRange.Bass:
return(new Vector2(60, 250));
break;
case FrequencyRange.LowMidrange:
return(new Vector2(250, 500));
break;
case FrequencyRange.Midrange:
return(new Vector2(500, 2000));
break;
case FrequencyRange.UpperMidrange:
return(new Vector2(2000, 4000));
break;
case FrequencyRange.High:
return(new Vector2(4000, 6000));
break;
case FrequencyRange.VeryHigh:
return(new Vector2(6000, 20000));
break;
case FrequencyRange.Decibal:
return(new Vector2(0, 20000));
default:
break;
}
return(Vector2.zero);
}
private void chart1_AxisViewChanged(object sender, System.Windows.Forms.DataVisualization.Charting.ViewEventArgs e)
{
FrequencyRange frequencyRange = new FrequencyRange(graph1LowerFrequency, graph1UpperFrequency);
graph1FrequencyRanges.Push(frequencyRange);
if (series1BinData != null)
{
AxisViewChanged(chart1, series1BinData.dataSeries, series1BinData.binArray, ref graph1LowerFrequency, ref graph1UpperFrequency, ref graph1BinFreqInc);
}
if (series2BinData != null)
{
AxisViewChanged(chart1, series2BinData.dataSeries, series2BinData.binArray, ref graph1LowerFrequency, ref graph1UpperFrequency, ref graph1BinFreqInc);
}
}
void ReadSpectrum()
{
// Get Sound Spectrum as a Fourier Series
var rawSpectrum = new float[AppManager.Instance.BinSize];
for (int i = 0; i < AppManager.Instance.BinSize; i++)
{
rawSpectrum [i] = 0;
}
AudioSource.GetSpectrumData(rawSpectrum, 0, FFTWindow.BlackmanHarris);
while (!(Microphone.GetPosition(null) > 0))
{
}
var spectrum = new float[AppManager.Instance.NumberOfFrequencies];
Array.Copy(rawSpectrum, spectrum, AppManager.Instance.NumberOfFrequencies);
Spectrum = new FrequencyRange(spectrum, 0, AppManager.Instance.MaximumFrequency);
}
//return the raw spectrum data i nthe given frequency range.
public float[] GetFrequencyData(int audioSourceIndex, FrequencyRange freqRange, bool useAudioFile)
{
if (!audioSources[audioSourceIndex].mute) // if not muted
{
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x; //Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y; //Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
if (useAudioFile)
{
freqData = GetAudioData(audioSourceIndex).GetSamples(freqRange, audioTimer);
}
else
{
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
}
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
List <float> validData = new List <float>();
for (int i = n1; i <= n2; i++)
{
//multiply by volume if we're not using mic input, where volume is set to 0 to avoid feedback issues;
if (!usingMic)
{
freqData[i] = freqData[i] * audioSources[audioSourceIndex].volume;
}
validData.Add(freqData[i]);
}
float[] normData = NormalizeArray(validData.ToArray());
return(normData);
}
Debug.LogWarning("warning: Audio Source: " + audioSourceIndex + " is muted");
return(new float[samplesToTake]);
}
public static FrequencyRange GetFrequencyRangeFromFrequency(long frequency)
{
double lowerFrequency, upperFrequency;
lowerFrequency = Math.Floor((double)frequency / 1000000) * 1000000;
upperFrequency = (double)frequency / 1000000;
if (upperFrequency % 1 == 0)
{
upperFrequency += 0.5;
}
upperFrequency = Math.Ceiling(upperFrequency) * 1000000;
FrequencyRange frequencyRange = new FrequencyRange(lowerFrequency, upperFrequency);
return(frequencyRange);
}
private void chart2_AxisViewChanged(object sender, System.Windows.Forms.DataVisualization.Charting.ViewEventArgs e)
{
FrequencyRange frequencyRange = new FrequencyRange(graph2LowerFrequency, graph2UpperFrequency);
graph2FrequencyRanges.Push(frequencyRange);
if (series1BinData != null)
{
AxisViewChanged(chart2, series1BinData.dataSeries, series1BinData.avgBinArray, ref graph2LowerFrequency, ref graph2UpperFrequency, ref graph2BinFreqInc);
}
if (series2BinData != null)
{
AxisViewChanged(chart2, series2BinData.dataSeries, series2BinData.avgBinArray, ref graph2LowerFrequency, ref graph2UpperFrequency, ref graph2BinFreqInc);
}
if (series1BinData != null && series2BinData != null)
{
GraphDifference(series1BinData, series2BinData);
}
}
//return the raw spectrum data i nthe given frequency range, using the specified number of bins
public float[] GetFrequencyData(int audioSourceIndex, FrequencyRange freqRange, int numBins, bool abs)
{
if (!audioSources[audioSourceIndex].mute) // if not muted
{
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x; //Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y; //Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
//Debug.Log("Valid Freq Data: (" + n1 + "-" + n2 + ")/" + samplesToTake);
List <float> validData = new List <float>();
for (int i = n1; i <= n2; i++)
{
float frequency = freqData[i];
if (abs)
{
frequency = Mathf.Abs(freqData[i]);
}
validData.Add(frequency * audioSources[audioSourceIndex].volume);
}
float[] binnedArray = GetBinnedArray(validData.ToArray(), numBins);
float[] normalizedArray = NormalizeArray(binnedArray);
return(normalizedArray);
}
Debug.LogWarning("warning: Audio Source: " + audioSourceIndex + " is muted");
return(new float[numBins]);
}
public override async Task Initialize()
{
if (ParentViewModel != null)
{
IEnumerable <BatCall> batCalls = ParentViewModel.BatCalls;
await Task.Run(() =>
{
FreqBins.LoadBins(batCalls);
IntensityBins.LoadBins(batCalls);
CallDurationBins.LoadBins(batCalls);
TimeBins.LoadBins(batCalls);
});
FrequencyRange.Set(FreqBins.Range);
IntensityRange.Set(IntensityBins.Range);
DurationRange.Set(CallDurationBins.Range);
TimeRange.Set(TimeBins.Range);
Freq = new ObservableCollection <KeyValuePair <DateTime, uint> >(batCalls.Select(c => new KeyValuePair <DateTime, uint>(c.StartTime, c.MaxFrequency)));
OnPropertyChanged(nameof(Freq));
OnPropertyChanged(nameof(FilterText));
}
}
//return the raw spectrum data i nthe given frequency range, using the specified number of bins
public float[] GetFrequencyData(int audioSourceIndex, FrequencyRange freqRange, int numBins, bool abs)
{
if (!audioSources[audioSourceIndex].mute) // if not muted
{
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x;//Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y;//Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
//Debug.Log("Valid Freq Data: (" + n1 + "-" + n2 + ")/" + samplesToTake);
List<float> validData = new List<float>();
for (int i = n1; i <= n2; i++)
{
float frequency = freqData[i];
if (abs)
{
frequency = Mathf.Abs(freqData[i]);
}
validData.Add(frequency * audioSources[audioSourceIndex].volume);
}
float[] binnedArray = GetBinnedArray(validData.ToArray(), numBins);
float[] normalizedArray = NormalizeArray(binnedArray);
return normalizedArray;
}
Debug.LogWarning("warning: Audio Source: " + audioSourceIndex + " is muted");
return new float[numBins];
}
public RangeViewModel(string title, FrequencyRange value, bool isChecked = false)
{
Title = title ?? throw new ArgumentNullException(nameof(title));
Value = value;
IsChecked = isChecked;
}
private void XB200AdjustFilterBank()
{
if (_dev == IntPtr.Zero)
return;
if (!_xb200_enabled)
return;
if (_centerFrequency >= MinFrequency)
return;
int error = 0;
FrequencyRange filter50M_freqs = new FrequencyRange(50000000, 54000000);
FrequencyRange filter144M_freqs = new FrequencyRange(149000000, 159000000);
FrequencyRange filter222M_freqs = new FrequencyRange(206000000, 235000000);
switch (_xb200_filter)
{
case bladerf_xb200_filter.BLADERF_XB200_AUTO_1DB:
filter50M_freqs.Min = 37774405;
filter50M_freqs.Max = 59535436;
filter144M_freqs.Min = 128326173;
filter144M_freqs.Max = 166711171;
filter222M_freqs.Min = 187593160;
filter222M_freqs.Max = 245346403;
break;
case bladerf_xb200_filter.BLADERF_XB200_AUTO_3DB:
filter50M_freqs.Min = 34782924;
filter50M_freqs.Max = 61899260;
filter144M_freqs.Min = 121956957;
filter144M_freqs.Max = 178444099;
filter222M_freqs.Min = 177522675;
filter222M_freqs.Max = 260140935;
break;
}
if (filter50M_freqs.contains(_centerFrequency))
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_50M);
}
else if (filter144M_freqs.contains(_centerFrequency))
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_144M);
}
else if (filter222M_freqs.contains(_centerFrequency))
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_222M);
}
else
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_CUSTOM);
}
if (error != 0)
throw new ApplicationException(String.Format("bladerf_xb200_set_filterbank() error. {0}", NativeMethods.bladerf_strerror(error)));
}
private void XB200AdjustFilterBank()
{
if (_dev == IntPtr.Zero)
{
return;
}
if (!_xb200_enabled)
{
return;
}
if (_centerFrequency >= MinFrequency)
{
return;
}
int error = 0;
FrequencyRange filter50M_freqs = new FrequencyRange(50000000, 54000000);
FrequencyRange filter144M_freqs = new FrequencyRange(149000000, 159000000);
FrequencyRange filter222M_freqs = new FrequencyRange(206000000, 235000000);
switch (_xb200_filter)
{
case bladerf_xb200_filter.BLADERF_XB200_AUTO_1DB:
filter50M_freqs.Min = 37774405;
filter50M_freqs.Max = 59535436;
filter144M_freqs.Min = 128326173;
filter144M_freqs.Max = 166711171;
filter222M_freqs.Min = 187593160;
filter222M_freqs.Max = 245346403;
break;
case bladerf_xb200_filter.BLADERF_XB200_AUTO_3DB:
filter50M_freqs.Min = 34782924;
filter50M_freqs.Max = 61899260;
filter144M_freqs.Min = 121956957;
filter144M_freqs.Max = 178444099;
filter222M_freqs.Min = 177522675;
filter222M_freqs.Max = 260140935;
break;
}
if (filter50M_freqs.contains(_centerFrequency))
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_50M);
}
else if (filter144M_freqs.contains(_centerFrequency))
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_144M);
}
else if (filter222M_freqs.contains(_centerFrequency))
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_222M);
}
else
{
error = NativeMethods.bladerf_xb200_set_filterbank(_dev, bladerf_module.BLADERF_MODULE_RX, bladerf_xb200_filter.BLADERF_XB200_CUSTOM);
}
if (error != 0)
{
throw new ApplicationException(String.Format("bladerf_xb200_set_filterbank() error. {0}", NativeMethods.bladerf_strerror(error)));
}
}
/// <summary>
/// Record samples of a specified FrequencyRange
/// </summary>
/// <param name="freqRange"></param>
/// <param name="data"></param>
public void RecordSamples(FrequencyRange freqRange, float[] data)
{
List <Array> samples = GetSampleArray(freqRange);
samples.Add(new Array(data, true));
}
//Get pre-recorded audio samples
float[] GetAudioSamplesFromFile(FrequencyRange frequencyRange, int audioSourceIndex)
{
float loopTime = audioTimer % audioDatas[audioSourceIndex].clipLength;
return(audioDatas[audioSourceIndex].GetSamples(frequencyRange, loopTime));
}
public static Vector2 GetFreqForRange(FrequencyRange freqRange)
{
switch (freqRange)
{
case FrequencyRange.SubBase:
return new Vector2(20, 60);
break;
case FrequencyRange.Bass:
return new Vector2(60, 250);
break;
case FrequencyRange.LowMidrange:
return new Vector2(250, 500);
break;
case FrequencyRange.Midrange:
return new Vector2(500, 2000);
break;
case FrequencyRange.UpperMidrange:
return new Vector2(2000, 4000);
break;
case FrequencyRange.High:
return new Vector2(4000, 6000);
break;
case FrequencyRange.VeryHigh:
return new Vector2(6000, 20000);
break;
case FrequencyRange.Decibal:
return new Vector2(0, 20000);
default:
break;
}
return Vector2.zero;
}
private void Update()
{
if (AudioSource.mute && !Input.Use)
{
return;
}
if (Input.Use)
{
if (!AudioSource.isPlaying)
{
int microphoneSamples = Microphone.GetPosition(Input.CurrentAudioInput);
if (microphoneSamples / AudioReactInput.Frequency > Input.Delay)
{
AudioSource.timeSamples = (int)(microphoneSamples - (Input.Delay * AudioReactInput.Frequency));
AudioSource.Play();
}
}
audioMultiplier = Input.AudioMultiplier;
}
else
{
audioMultiplier = AudioSourceMultiplier;
}
AudioSource.GetSpectrumData(frequencyData, 0, FFTWindow.BlackmanHarris);
AudioSource.GetOutputData(outputData, 0);
audioVolume = AudioSource.volume;
for (int i = 0; i < FrequencySamples.Length; i++)
{
Action action;
FrequencyRange frequencyRange = (FrequencyRange)i;
if (frequencyRange != FrequencyRange.Decibel)
{
// Get Frequency Volume
action = new Action(() =>
{
float[] range = GetFrequencyRange(frequencyRange);
float frequencyLow = range[0];
float frequencyHigh = range[1];
int n1 = (int)Mathf.Floor(frequencyLow * samplesAmount / frequencyMax);
int n2 = (int)Mathf.Floor(frequencyHigh * samplesAmount / frequencyMax);
float sum = 0;
for (int j = n1; j <= n2; j++)
{
if (j < frequencyData.Length && j >= 0)
{
sum += Mathf.Abs(frequencyData[j]);
}
}
if (Input.Use)
{
if (sum < Input.VolumeThreshold)
{
sum = 0;
}
}
else
{
sum = sum * audioVolume;
}
lock (FrequencySamples)
{
FrequencySamples[i] = sum / (n2 - n1 + 1);
}
});
}
else
{
// get RMS
action = new Action(() =>
{
float sum = 0;
for (int j = 0; j < outputData.Length; j++)
{
sum += outputData[j] * outputData[j];
}
float rmsValue = Mathf.Sqrt(sum / samplesAmount);
if (Input.Use)
{
if (rmsValue < Input.VolumeThreshold)
{
rmsValue = 0;
}
}
else
{
rmsValue = rmsValue * audioVolume;
}
lock (FrequencySamples)
{
FrequencySamples[i] = rmsValue;
}
});
}
if (threadPool.MaxThreads > 1)
{
threadPool.CreateThread(action, "GetFrequencySample[" + i + "]");
}
else
{
action();
}
}
if (threadPool.MaxThreads > 1)
{
for (int i = 0; i < FrequencySamples.Length; i++)
{
threadPool.JoinThread(i);
}
threadPool.OnUpdate();
}
for (int i = 0; i < FrequencySamples.Length; i++)
{
FrequencySamples[i] *= audioMultiplier;
}
}
//like GetAvg or GetRMS, but inside a given frequency range
public float GetFrequencyVol(int audioSourceIndex, FrequencyRange freqRange)
{
if (!audioSources[audioSourceIndex].mute) // if not muted
{
Vector2 range = GetFreqForRange(freqRange);
float fLow = range.x;//Mathf.Clamp (range.x, 20, fMax); // limit low...
float fHigh = range.y;//Mathf.Clamp (range.y, fLow, fMax); // and high frequencies
// get spectrum
float[] freqData = new float[samplesToTake];
audioSources[audioSourceIndex].GetSpectrumData(freqData, 0, FFTWindow.BlackmanHarris);
int n1 = (int)Mathf.Floor(fLow * samplesToTake / fMax);
int n2 = (int)Mathf.Floor(fHigh * samplesToTake / fMax);
float sum = 0;
// Debug.Log("Smapling freq: " + n1 + "-" + n2);
// average the volumes of frequencies fLow to fHigh
for (int i = n1; i <= n2; i++)
{
sum += Mathf.Abs(freqData[i]);
}
sum = sum * audioSources[audioSourceIndex].volume;
return sum / (n2 - n1 + 1);
}
return 0;
}