C#:mW数组SEHException publicstaticvoidenergyandentropy(列表数据、字符串\u文件名、OpenFileDialog打开) { NAudio.Wave.WaveChannel32 Wave=新的NAudio.Wave.WaveChannel32(新的NAudio.Wave.waveilereader(open.FileName)); 字节[]主缓冲区=新字节[波长]; int sampleRate=wave.WaveFormat.sampleRate; int window_ms=200; int窗口; int fs=取样器; window=window_ms*fs/1000; float[]fbuffer=新的float[mainBuffer.Length/8]; wave.Read(mainBuffer,0,mainBuffer.Length); 对于(int i=0;i
我有这段代码,并使用一个名为entropy.m的MatLab函数(我将其转换为dll)。我正在计算数据段的能量和熵。为此,我在C#:mW数组SEHException publicstaticvoidenergyandentropy(列表数据、字符串\u文件名、OpenFileDialog打开) { NAudio.Wave.WaveChannel32 Wave=新的NAudio.Wave.WaveChannel32(新的NAudio.Wave.waveilereader(open.FileName)); 字节[]主缓冲区=新字节[波长]; int sampleRate=wave.WaveFormat.sampleRate; int window_ms=200; int窗口; int fs=取样器; window=window_ms*fs/1000; float[]fbuffer=新的float[mainBuffer.Length/8]; wave.Read(mainBuffer,0,mainBuffer.Length); 对于(int i=0;i,c#,arrays,matlab,multidimensional-array,C#,Arrays,Matlab,Multidimensional Array,我有这段代码,并使用一个名为entropy.m的MatLab函数(我将其转换为dll)。我正在计算数据段的能量和熵。为此,我在列表中填充数据。当我的数据达到行数时,我清除列表和数组。然后继续处理下一段 这是我的问题。在计算小文件的熵时,它工作得很好。然而,当我试图计算大于10兆字节的文件的熵时arr1=cba.ToArray()此行引发异常SEHExException未处理-外部组件引发异常。我尝试放置一些断点,然后观察代码。它在循环开始时工作,但随后给了我这个异常。如何解决此问题?NAudio
列表中填充数据。当我的数据达到行数时,我清除列表和数组。然后继续处理下一段
这是我的问题。在计算小文件的熵时,它工作得很好。然而,当我试图计算大于10兆字节的文件的熵时arr1=cba.ToArray()代码>此行引发异常<代码>SEHExException未处理
-外部组件引发异常。
我尝试放置一些断点,然后观察代码。它在循环开始时工作,但随后给了我这个异常。如何解决此问题?NAudio.Wave.WaveChannel32 Wave=new NAudio.Wave.WaveChannel32(new NAudio.Wave.waveilereader(open.FileName));
public static void EnergyandEntropy(List<float> data, string _filename, OpenFileDialog open)
{
NAudio.Wave.WaveChannel32 wave = new NAudio.Wave.WaveChannel32(new NAudio.Wave.WaveFileReader(open.FileName));
byte[] mainBuffer = new byte[wave.Length];
int sampleRate = wave.WaveFormat.SampleRate;
int window_ms = 200;
int window;
int fs = sampleRate;
window = window_ms * fs / 1000;
float[] fbuffer = new float[mainBuffer.Length / 8];
wave.Read(mainBuffer, 0, mainBuffer.Length);
for (int i = 0; i < fbuffer.Length; i++)
{
fbuffer[i] = (BitConverter.ToSingle(mainBuffer, i * 8));
}
data.AddRange(fbuffer);
int dataRange = data.Count - (data.Count % window);
data.RemoveRange(dataRange, data.Count - dataRange);
var rows = window;
var cols = data.Count / window;
float[,] array2D = new float[window, data.Count / window];
var current = 0;
List<double> abc = new List<double>();
List<double> cba = new List<double>();
List<double> vuv = new List<double>();
List<MWArray> ent = new List<MWArray>();
MWNumericArray arr1;
EntropyCalculation obj = new EntropyCalculation();
for (int i = 0; i < rows; i++)
{
for (int j = 0; j < cols; j++)
{
array2D[i, j] = data[current++];
double a = array2D[i, j] * array2D[i, j];
abc.Add(a);
cba.Add(array2D[i, j]);
arr1 = cba.ToArray();
if (abc.Count % rows == 0 && abc.Count > 0)
{
double energies = Math.Sqrt(abc.Sum());
MWArray result = obj.entropy(arr1);
abc.Clear();
cba.Clear();
arr1 = null;
vuv.Add(energies);
ent.Add(result);
}
}
}
}
WaveFileReader wavFile=新的WaveFileReader(open.FileName);
int sampleRate=wave.WaveFormat.sampleRate;
字节[]主缓冲区=新字节[wave.WaveFormat.AverageBytesPerSecond/5];
#区域约束
int window_ms=200;
int窗口;
int fs=取样器;
window=window_ms*fs/1000;
#端区
int-read;
int length=(int)波长;
列表能源=新列表();
List ent=新列表();
MWNumericArray arr1=null;
EntropyCalculation obj=新EntropyCalculation();
if(波长%mainBuffer.Length!=0)
{
int值=(int)(wave.Length/mainBuffer.Length);
长度=主缓冲区。长度*值;
}
while(wave.Position!=长度)
{
列表段=新列表();
List listOfSquaredSegment=新列表();
read=wave.read(mainBuffer,0,mainBuffer.Length);
对于(int i=0;i
我有点不舒服。它源于“由于先前的功能评估超时,功能评估被禁用”。我找到了它的资源。如果尝试在for
循环中填写MWNumericArray
,则无法完成该过程,因此评估超时。我还更改了代码以处理更大的文件。它仍然有点慢,但它现在可以正常工作
NAudio.Wave.WaveChannel32 wave = new NAudio.Wave.WaveChannel32(new NAudio.Wave.WaveFileReader(open.FileName));
WaveFileReader wavFile = new WaveFileReader(open.FileName);
int sampleRate = wave.WaveFormat.SampleRate;
byte[] mainBuffer = new byte[wave.WaveFormat.AverageBytesPerSecond / 5];
#region Constraints
int window_ms = 200;
int window;
int fs = sampleRate;
window = window_ms * fs / 1000;
#endregion
int read;
int length = (int)wave.Length;
List<double> listOfEnergies = new List<double>();
List<MWArray> ent = new List<MWArray>();
MWNumericArray arr1 = null;
EntropyCalculation obj = new EntropyCalculation();
if (wave.Length % mainBuffer.Length != 0)
{
int value = (int)(wave.Length / mainBuffer.Length);
length = mainBuffer.Length * value;
}
while (wave.Position != length)
{
List<double> segment = new List<double>();
List<double> listOfSquaredSegment = new List<double>();
read = wave.Read(mainBuffer, 0, mainBuffer.Length);
for (int i = 0; i < read / 8; i++)
{
segment.Add((BitConverter.ToSingle(mainBuffer, i * 8)));
double segmentSquare = segment[i] * segment[i];
listOfSquaredSegment.Add(segmentSquare);
//arr1 = segment.ToArray();
}
arr1 = segment.ToArray();
double energy = Math.Sqrt(listOfSquaredSegment.Sum());
listOfEnergies.Add(energy);
MWArray result = obj.entropy(arr1);
ent.Add(result);
arr1 = null;
}