/// <summary>
/// 音频数据更新
/// </summary>
/// <param name="args"></param>
private void AudioInput_DataGenerated(DataGeneratedEventArgs args)
{
double[][] samples = args.Samples;
if (samples.Length == 0)
{
return;
}
//源波
double[] souceWave = samples[0];
List <double> sampledData = new List <double>();
//采样后的信号
double[] sampledWave = new double[souceWave.Count()];
int impact = (int)(_samplingFrequency / Param.secSamplingFrequency);
for (int i = 0; i < souceWave.Count(); i++)
{
if (i % impact == 0)
{
sampledWave[i] = souceWave[i];
sampledData.Add(souceWave[i]);
}
else
{
sampledWave[i] = 0.0;
}
}
//为示波器输入数据
if (m_WaveformMonitor != null)
{
double[][] waveData = new double[_seriesNames.Count()][];
waveData[0] = souceWave;
waveData[1] = sampledWave;
m_WaveformMonitor.FeedData(waveData);
}
List <double> pcmCode = new List <double>();
foreach (var item in sampledData)
{
int[] codes = PCMCaculator.PCM_Encode(item);
foreach (var code in codes)
{
pcmCode.Add(code);
}
}
//为示波器输入数据
if (m_CodeMonitor != null)
{
double[][] Data = new double[1][];
Data[0] = pcmCode.ToArray();
m_CodeMonitor.FeedData(Data);
}
}
private void TextChange_InputVal(object sender, TextChangedEventArgs e)
{
TextBox tb = sender as TextBox;
if (tb.Text == null)
{
return;
}
try
{
//填写
double val = double.Parse(tb.Text);
int[] codes = PCMCaculator.PCM_Encode(val);
string ans = "|";
foreach (var code in codes)
{
ans = ans + " " + code.ToString() + " |";
}
EncodeStrTextBlock.Text = ans;
//更新PCM显示器数据
SeriesPoint[] points = new SeriesPoint[codes.Length + 1];
for (int i = 0; i < codes.Length; i++)
{
points[i].X = i;
points[i].Y = codes[i];
}
points[codes.Length].X = codes.Length;
points[codes.Length].Y = codes[codes.Length - 1];
_chart.ViewXY.PointLineSeries[0].Points = points;
}
catch (Exception ex)
{
Console.WriteLine(ex);
return;
}
}
