/// <summary>
///构造
/// </summary>
public Chart_AM()
{
m_aSpectrograms2D_source = null;
m_aSpectrograms2D_signal = null;
m_AreaSpectrum_signal = null;
m_AreaSpectrum_souce = null;
m_aWaveformMonitors = null;
m_iFFTCalcIntervalMs = 20;
m_iFFTWindowLength = 1024 * 4;
m_iHighFreq = 2000;
_samplingFrequency = 0;
Param = new Param_AM(1000);
_seriesNames = new string[]
{
"音频",
"载波",
"调制",
"检波"
};
InitializeComponent();
//销毁时释放资源
Dispatcher.ShutdownStarted += (object sender, EventArgs e) =>
{
Dispose();
};
}
private void InitSpectrograms()
{
DisposeSpectrograms();
int resolution = m_iFFTWindowLength;
if (m_iHighFreq < _samplingFrequency / 2)
{
resolution = (int)Math.Round((double)m_iHighFreq /
(double)(_samplingFrequency / 2) * m_iFFTWindowLength);
}
string strTitle = "P(f)";
m_aSpectrograms2D_source = new SpectrogramViewXYIntensity(
gridChart,
true,
resolution,
m_iFFTCalcIntervalMs,
5,
0,
m_iHighFreq,
strTitle,
DefaultColors.SeriesForBlackBackgroundWpf[0]);
m_aSpectrograms2D_source.Chart.ChartName = "频谱仪(热力/源)";
m_aSpectrograms2D_signal = new SpectrogramViewXYIntensity(
gridChart,
true,
resolution,
m_iFFTCalcIntervalMs,
5,
0,
m_iHighFreq,
strTitle,
DefaultColors.SeriesForBlackBackgroundWpf[0]);
m_aSpectrograms2D_signal.Chart.ChartName = "频谱仪(热力/信号)";
m_AreaSpectrum_souce = new AreaSpectrumMonitor(
gridChart, resolution, m_iHighFreq,
strTitle, DefaultColors.SeriesForBlackBackgroundWpf[0]
);
m_AreaSpectrum_souce.Chart.ChartName = "频谱仪(源)";
m_AreaSpectrum_signal = new AreaSpectrumMonitor(
gridChart, resolution, m_iHighFreq,
strTitle, DefaultColors.SeriesForBlackBackgroundWpf[1]
);
m_AreaSpectrum_signal.Chart.ChartName = "频谱仪(信号)";
ArrangeMonitors();
}
/// <summary>
/// 初始化频谱仪
/// </summary>
private void InitSpectrograms()
{
DisposeSpectrograms();
int resolution = m_iFFTWindowLength;
if (m_iHighFreq < _samplingFrequency / 2)
{
resolution = (int)Math.Round((double)m_iHighFreq / (double)(_samplingFrequency / 2) * m_iFFTWindowLength);
}
m_aSpectrograms2D = new SpectrogramViewXYIntensity[_channelCount];
for (int channelIndex = 0; channelIndex < _channelCount; channelIndex++)
{
string strTitle = "P(f)\n - Channel " + (channelIndex + 1).ToString();
if (_channelCount == 2)
{
if (channelIndex == 0)
{
strTitle = "P(f) - Left";
}
else
{
strTitle = "P(f) - Right";
}
}
SpectrogramViewXYIntensity svi =
new SpectrogramViewXYIntensity(
gridChart,
true,
resolution,
m_iFFTCalcIntervalMs,
5,
0,
m_iHighFreq,
strTitle,
DefaultColors.SeriesForBlackBackgroundWpf[channelIndex % DefaultColors.SeriesForBlackBackgroundWpf.Length]
);
svi.Chart.ChartName = "Spectrogram Chart " + (channelIndex + 1).ToString();
m_aSpectrograms2D[channelIndex] = svi;
}
ArrangeMonitors();
}
/// <summary>
/// 释放频谱仪资源
/// </summary>
private void DisposeSpectrograms()
{
if (m_aSpectrograms2D_source != null)
{
m_aSpectrograms2D_source.Dispose();
m_aSpectrograms2D_source = null;
}
if (m_aSpectrograms2D_signal != null)
{
m_aSpectrograms2D_signal.Dispose();
m_aSpectrograms2D_signal = null;
}
if (m_AreaSpectrum_souce != null)
{
m_AreaSpectrum_souce.Dispose();
m_AreaSpectrum_souce = null;
}
if (m_AreaSpectrum_signal != null)
{
m_AreaSpectrum_signal.Dispose();
m_AreaSpectrum_signal = null;
}
}
