合并两个pcm文件时出现噪音

Question

我正在合并两个pcm数据，结果pcm有额外的grrrrrrrrrr噪音。我的代码是：

int main(void)
{

    FILE *rCAudio;
    FILE *raudio;
    FILE *wtest;

    rCAudio=fopen("Audio1.pcm","rb");        //Reading first pcm file
    if(rCAudio==NULL)
        cout<<"Errr";


    raudio=fopen("Audio2.pcm","rb");        //Reading second pcm file
    if(raudio==NULL)
        cout<<"Errr";

    fopen_s(&wtest,"AudioMerge.pcm","ab"); // Writing final pcm file

    short* first= new short[1792];;
    short* second= new short[1792];;
    short* merge = new short[1792];
    short sample1,sample2;

    while(1)
    {
        fread(first,2,1792,rCAudio);
        fread(second,2,1792,raudio);

        for(int j=0;j<1792;j++)
        {
            sample1 = first[j];
            sample2 = second[j];
            int mixedi=(int)sample1 + (int)sample2;
            if (mixedi>32767) mixedi=32767;
            if (mixedi<-32768) mixedi=-32768;

            merge[j] =(short)mixedi;
        }
        fwrite(merge,2,1972,wtest);
    }
}

Answer 1

我得到了解决方案，问题是： 我在BYTE中一次写了4096字节的Audio1.pcm，在BYTE中一次写了4096字节的Audio2.pcm。但我一次只能读取1972个字节。

所以我通过在BYTE中一次读取4096个字节来纠正它，并在BYTE中一次用4096个字节保存第三个合并文件。