iOS 音频数据bytes转float

#define MAX_INT_FLOAT 32768.0

将每两个字节转换成一个float数据

        Byte *bytes = (Byte *)[inputData bytes];
        for(int i=0;i<[inputData length];i = i + 2){
            Byte tByte[2];
            tByte[0] = bytes[i];
            tByte[1] = bytes[i + 1];
            short number;
            memcpy(&number, &tByte, sizeof(tByte));
            [self.cacheData addObject:[NSNumber numberWithFloat:number/(double)MAX_INT_FLOAT]];
        }