/// <summary>
/// 通过波形数据（List）得到频域Y轴数据
/// </summary>
/// <param name="wave"></param>
/// <param name="fs"></param>
/// <param name="isEnvl"></param>
/// <returns></returns>
public static List <double> GetFDYData(List <float> wave, float fs, bool isEnvl)
{
try
{
if (wave == null || wave.Count == 0)
{
return(null);
}
float[] waveF = wave.ToArray();
double[] das = new double[waveF.Length];
for (int i = 0; i < das.Length; i++)
{
das[i] = (double)waveF[i];
}
if (isEnvl == true)
{
//包络频谱均值拉平
double dc = das.Average();
for (int inx = 0; inx < das.Length; inx++)
{
das[inx] = das[inx] - dc;
}
}
return(FrepTools.GetFrepData(das, (double)fs).ToList());
}
catch (Exception ex)
{
LogHelper.WriteLog(ex);
return(null);
}
}
/// <summary>
/// 创建人：张辽阔
/// 创建时间：2016-08-02
/// 创建记录：得到频域Y轴数据
/// </summary>
/// <param name="path">Y轴数据存储路径</param>
/// <param name="fs">采样频率</param>
/// <param name="isEnvl">是否包络</param>
/// <returns></returns>
public static List <double> GetFDYData(string path, float fs, bool isEnvl)
{
try
{
lock (LockFile)
{
FileStream aFile = new FileStream(path, FileMode.Open);
StreamReader sr = new StreamReader(aFile);
string datas = sr.ReadToEnd();
string[] datasStr = datas.Split(',');
aFile.Dispose();
sr.Dispose();
double[] das = Array.ConvertAll <string, double>(datasStr, item => double.Parse(item));
//包络频谱做均值拉平处理
if (isEnvl == true)
{
double dc = das.Average();
for (int inx = 0; inx < das.Length; inx++)
{
das[inx] = das[inx] - dc;
}
}
return(FrepTools.GetFrepData(das, (double)fs).ToList());
}
}
catch (Exception ex)
{
LogHelper.WriteLog(ex);
return(null);
}
}