/// <summary>
/// Creates Real-Time FFT analyzer.
/// </summary>
/// <param name="source">Specified audio provider.</param>
/// <param name="fftLength">Length of FFT.</param>
public LiveFftAnalyzer(IAudioProvider source, int fftLength = 16384, bool real = true)
{
_real = real;
FftLength = fftLength;
_channels = source.ChannelCount();
if (!IsPowerOfTwo(fftLength))
{
throw new ArgumentException("FFT Length must be a power of two");
}
_m = (int)Math.Log(fftLength, 2.0);
_fftLength = fftLength;
FftPlan(_fftLength);
_fftBuffer = new Complex[fftLength];
_fftArgs = new FftEventArgs(_fftBuffer);
_source = source;
_source.DataChunkRecieved += DataChunkRecieved;
if (_source is IFloatProvider)
{
(_source as IFloatProvider).FloatChunkRecieved += FloatChunkRecieved;
}
WaveFormat = new WaveFormat(_source.SamplingRate(), _source.Bits(), _source.ChannelCount());
_converter = new FloatConverter(_source.SamplingRate(), _source.Bits(), _source.ChannelCount());
_step = _channels * _converter.Step();
}
public G3XDdcDdc1FloatProvider(Ddc1 ddc1, bool seperateIq = false, int bufferSize = 131072)
{
_floatBuffer = new float[bufferSize];
_ddc1 = ddc1;
SeperateIq = seperateIq;
_converter = new FloatConverter(SamplingRate(), Bits(), ChannelCount());
_step = _converter.Step() * ChannelCount();
}
