急:两个wav音频文件合成一串二进制流输出

zhouyongli41 2010-01-08 01:58:36

我把两个wav音频文件合成一串二进制流输出,第二个音频文件除去头部信息是在位置44吗？
我的测试结果只有sound1.wav的声音,哪合并出错了



        FileStream fs = new FileStream(Server.MapPath("sound/sound1.wav"), FileMode.Open, FileAccess.Read);

        byte[] arrfile = new byte[fs.Length];

        fs.Read(arrfile, 0, arrfile.Length);

        //

        FileStream fs1 = new FileStream(Server.MapPath("sound/sound2.wav"), FileMode.Open, FileAccess.Read);

        byte[] arr = new byte[fs1.Length - 44];

        fs1.Position = 44;//去除头部信息

        fs1.Read(arr, 0, arr.Length);



        byte[] sound = new byte[arrfile.Length+arr.Length];



        arrfile.CopyTo(sound, 0);

        arr.CopyTo(sound, arrfile.Length);



        fs.Close();

        fs1.Close();

        Response.Clear();

        Response.ContentType = "audio/x-wav wav";

        Response.BinaryWrite(sound);

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wuyq11 2010-01-10

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http://topic.csdn.net/u/20100104/15/351ae28b-b6f7-4b01-bd8a-309bd8f90404.html

liushengmz 2010-01-10

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[Quote=引用 2 楼 talesten 的回复:]
你的arr一直没被赋值,怎么会有sound2啊
[/Quote]

兄弟，arr被赋值了吧？

jshi123 2010-01-10

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改写一下头部信息就好了
FileStream fs = new FileStream(Server.MapPath("sound/sound1.wav"), FileMode.Open, FileAccess.Read);
byte[] arrfile = new byte[fs.Length];
fs.Read(arrfile, 0, arrfile.Length);
//
FileStream fs1 = new FileStream(Server.MapPath("sound/sound2.wav"), FileMode.Open, FileAccess.Read);
byte[] arr = new byte[fs1.Length - 44];
fs1.Position = 44;//去除头部信息
fs1.Read(arr, 0, arr.Length);

byte[] sound = new byte[arrfile.Length + arr.Length];

arrfile.CopyTo(sound, 0);
arr.CopyTo(sound, arrfile.Length);

BinaryWriter writer = new BinaryWriter(new MemoryStream(sound));
writer.Seek(4, SeekOrigin.Begin);
writer.Write((int)(fs.Length + fs1.Length - 8 - 44));
writer.Seek(40, SeekOrigin.Begin);
writer.Write((int)(fs.Length + fs1.Length - 44 - 44));
writer.Close();

fs.Close();
fs1.Close();
Response.Clear();
Response.ContentType = "audio/x-wav wav";
Response.BinaryWrite(sound);
Response.End();