把以下MATLAB语言改为C语言function LossGain = CalaulateWindowGain(WindowLength,b,WindowType) %计算常见加窗技术对信号失配引起的能量损失 % WindowLength = 1001;%加窗的长度 Loss = 0;%加窗的信噪比损失 % b = 1;%加窗的调制深度 switch WindowType case 'Hanning'%w(n)=0.5(1?cos(2πn/N)),0≤n≤N N = WindowLength - 1; for i = 1:N Loss = Loss + abs((0.5*(1 - cos(2*pi*i/N))).^b); end LossGain = Loss/N.^2; case 'Hamming'%w(n)=0.54?0.46cos(2πn/N),0≤n≤N N = WindowLength - 1; for i = 1:N Loss = Loss + abs((0.54 - 0.46*cos(2*pi*i/N)).^b); end LossGain = Loss/N.^2; otherwise LossGain = 5.0e-4; end
时间: 2024-04-20 19:27:39 浏览: 111
以下是将MATLAB代码转换为C语言的函数:
```c
#include <stdio.h>
#include <math.h>
#include <string.h>
double CalculateWindowGain(int WindowLength, double b, const char* WindowType) {
double Loss = 0.0; // 加窗的信噪比损失
if (strcmp(WindowType, "Hanning") == 0) {
int N = WindowLength - 1;
for (int i = 1; i <= N; i++) {
Loss += pow((0.5 * (1 - cos(2 * M_PI * i / N))), b);
}
double LossGain = Loss / (N * N);
return LossGain;
}
else if (strcmp(WindowType, "Hamming") == 0) {
int N = WindowLength - 1;
for (int i = 1; i <= N; i++) {
Loss += pow((0.54 - 0.46 * cos(2 * M_PI * i / N)), b);
}
double LossGain = Loss / (N * N);
return LossGain;
}
else {
double LossGain = 5.0e-4;
return LossGain;
}
}
int main() {
int WindowLength = 1001;
double b = 1;
const char* WindowType = "Hanning";
double result = CalculateWindowGain(WindowLength, b, WindowType);
printf("LossGain: %f\n", result);
return 0;
}
```
这里我们使用了`<stdio.h>`和`<math.h>`头文件,分别用于输入输出和数学计算。`strcmp()`函数用于字符串比较。通过比较`WindowType`的值,我们可以确定需要计算的窗函数类型。然后,我们使用循环计算损失值,并最后返回损失增益。
在`main()`函数中,我们定义了输入参数并调用`CalculateWindowGain()`函数来计算损失增益。最后,我们使用`printf()`函数将结果打印出来。
请注意,将MATLAB代码转换为C语言可能需要更多的调整和适应性,具体取决于您的需求和环境。这里提供的C代码只是一个示例,您可能需要根据实际情况进行进一步的修改和优化。
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