/// <summary>
/// 初始化FFT数据
/// </summary>
private void InitFFTCalculator()
{
if (m_fftCalculator != null)
{
m_fftCalculator.Dispose();
}
m_fftCalculator = new RealtimeFFTCalculator(m_iFFTCalcIntervalMs,
_samplingFrequency, m_iFFTWindowLength, 2);
}
