用C语言编译一个谱减法降噪的代码

以下是一个简单的谱减法降噪的代码，使用C语言编写：

#include <stdio.h>
#include <stdlib.h>
#include <math.h>

#define PI 3.14159265358979323846

int main()
{
    FILE *inputFile, *outputFile;
    char inputFileName[100], outputFileName[100];
    int i, j, k, N, M, L, n, m;
    double *x, *y, *h, *w, *X, *Y, *H, *R;

    printf("请输入输入文件名：");
    scanf("%s", inputFileName);
    printf("请输入输出文件名：");
    scanf("%s", outputFileName);

    inputFile = fopen(inputFileName, "rb");
    if (inputFile == NULL)
    {
        printf("无法打开输入文件！\n");
        return 1;
    }

    outputFile = fopen(outputFileName, "wb");
    if (outputFile == NULL)
    {
        printf("无法打开输出文件！\n");
        return 1;
    }

    printf("请输入窗口长度：");
    scanf("%d", &N);

    printf("请输入窗口移动步长：");
    scanf("%d", &M);

    printf("请输入谱减法参数L：");
    scanf("%d", &L);

    x = (double*)malloc(N * sizeof(double));
    y = (double*)malloc(N * sizeof(double));
    h = (double*)malloc(N * sizeof(double));
    w = (double*)malloc(N * sizeof(double));
    X = (double*)malloc(N * sizeof(double));
    Y = (double*)malloc(N * sizeof(double));
    H = (double*)malloc(N * sizeof(double));
    R = (double*)malloc(N * sizeof(double));

    for (i = 0; i < N; i++)
    {
        w[i] = 0.54 - 0.46 * cos(2 * PI * i / (N - 1));
    }

    while (!feof(inputFile))
    {
        for (i = 0; i < N; i++)
        {
            x[i] = 0;
            if (fread(&x[i], sizeof(short), 1, inputFile) != 1)
            {
                break;
            }
        }

        if (i < N)
        {
            break;
        }

        for (i = 0; i < N; i++)
        {
            y[i] = x[i] * w[i];
        }

        for (k = 0; k < N; k++)
        {
            X[k] = 0;
            for (n = 0; n < N; n++)
            {
                X[k] += y[n] * cos(2 * PI * k * n / N);
            }
        }

        for (k = 0; k < N; k++)
        {
            H[k] = 1 - exp(-L * pow(k, 2) / pow(N, 2));
        }

        for (k = 0; k < N; k++)
        {
            Y[k] = X[k] * H[k];
        }

        for (n = 0; n < N; n++)
        {
            y[n] = 0;
            for (k = 0; k < N; k++)
            {
                y[n] += Y[k] * cos(2 * PI * k * n / N);
            }
            y[n] /= N;
        }

        for (i = 0; i < M; i++)
        {
            fseek(inputFile, sizeof(short), SEEK_CUR);
        }

        for (i = 0; i < N; i++)
        {
            R[i] = y[i] / w[i];
            if (R[i] > 32767)
            {
                R[i] = 32767;
            }
            if (R[i] < -32768)
            {
                R[i] = -32768;
            }
            fwrite(&R[i], sizeof(short), 1, outputFile);
        }
    }

    free(x);
    free(y);
    free(h);
    free(w);
    free(X);
    free(Y);
    free(H);
    free(R);

    fclose(inputFile);
    fclose(outputFile);

    return 0;
}

这个代码实现了一个简单的谱减法降噪算法，可以读取一个输入文件，对其中的语音信号进行降噪处理，然后将处理后的信号写入一个输出文件中。