使用超级动力SDK重新录制音频

Question

我正在使用一个超级强大的录音机来录音，我正在录制音频然后添加曲目，所以如果我编辑第一首曲目并在第一首曲目上重新录制，那么添加曲目就是将音频与旧音频混合在一起，而不是覆盖音频。超强SDK有没有覆盖音频的功能？任何帮助都将不胜感激。

谢谢。

Answer 1

您必须分析录制的pcm文件，并从要重新录制的部分覆盖该文件。SuperPowered没有这个功能。

FILE *fin;
float runTime=0;
//PCM HEADER
int SampleRate_24to27=0;// 441000,...,8000
int ByteRate_28to31=0;
short MonoStreo_32to33=0;
short BitPerSample_34to35=0;
int DataChunkSize_40to43=0;

std::string file = GS->mWritePath;
file.append("rec1.wav");

fin=fopen(file.c_str(),"rb");

fseek(fin,24,SEEK_SET);
fread(&SampleRate_24to27 , sizeof(int) , 1, fin);
printf("SampleRate %d \n",SampleRate_24to27);
fseek(fin,28,SEEK_SET);
fread(&ByteRate_28to31 , sizeof(int) , 1, fin);
printf("ByteRate %d \n",ByteRate_28to31);
fseek(fin,32,SEEK_SET);
fread(&MonoStreo_32to33 , sizeof(short) , 1, fin);
printf("MonoStreo %d \n",MonoStreo_32to33);
fseek(fin,34,SEEK_SET);
fread(&BitPerSample_34to35 , sizeof(short) , 1, fin);
printf("BitPerSample %d \n",BitPerSample_34to35);
fseek(fin,40,SEEK_SET);
fread(&DataChunkSize_40to43 , sizeof(int) , 1, fin);
printf("DataChunkSize %d \n",DataChunkSize_40to43);
runTime=(float)(((float)DataChunkSize_40to43/(float)(SampleRate_24to27*MonoStreo_32to33)));
printf("duration sec = %fsec\n", runTime);
printf("duration min = %3.2fmin", (float)runTime/60);
fclose(fin);

int savePos = 0;
savePos = 44+reRecordStartSec*(SampleRate_24to27*MonoStreo_32to33);
// 44 -> HEADER SIZE
// 4sec * (SampleRate_24to27*MonoStreo_32to33)

char buf[SPLIT_BYTE]; //1000KB

std::string file1 = GS->mWritePath;
file1.append("rec1.wav");
std::string file2 = GS->mWritePath;
file2.append("rec2.wav");

FILE * rfp, * wfp;

wfp = fopen(file1.c_str(), "rb+"); //src

rfp = fopen(file2.c_str(), "rb"); //dst

fseek(wfp, savePos, SEEK_SET);
fseek(rfp, 44, SEEK_SET);// dst header skip

long count = 0;

while (feof(rfp) == 0)    // 
{
    count = fread(buf, sizeof(char), SPLIT_BYTE, rfp);
    fwrite(buf, sizeof(char), count, wfp);
    memset(buf, 0, SPLIT_BYTE);
}

fclose(rfp);
fclose(wfp);