可视电话软件
所属分类：IP电话/视频会议
开发工具：Visual C++
文件大小：4816KB
下载次数：705
上传日期：2006-01-26 08:27:32
上 传 者：
iamgufeng
说明： NetTalk是一个适用于局域网和因特网的可视电话软件
一． 开发环境
Windows2000 Server & Visual C++6.0 & SDK
+自开发的CWndX类库(相当于简化的MFC涉及窗口的部分)
二． 支持环境
Windows98/ME/2000/XP
三． 所涉及协议和标准
网络传输采用UDP协议，音频压缩采用G.729标准，视频压缩采用H.263标准
四． 性能参数
以音频帧为基准，每帧音频数据有２４０个采样点，时间为２４０＊１０００／８０００＝３０ms，８０００为音频的采样率。
数据接收端队列缓冲延迟：３０＊3＝90ms
数据发送端录音延迟：30ms
数据压缩解压耗时：<40ms
网络延迟：<100ms（我想校网情况应该不错J）
总延迟：<260ms
根据VOIP标准，总延迟<300ms是人可以接受的，以上计算是保守的，实际情况可能会好得多。
(NetTalk is applied to a LAN and the Internet a video phone software. Windows 2000 Server Development Environment)
文件列表:
NetTalk (0, 2006-01-26)
NetTalk\log.txt (397, 2004-09-19)
NetTalk\NetTalk (0, 2005-09-01)
NetTalk\NetTalk.exe (647168, 2004-08-04)
NetTalk\NetTalk\Project (0, 2005-09-01)
NetTalk\NetTalk\Project\AVIO (0, 2005-09-01)
NetTalk\NetTalk\Project\AVIO\AudioPlay.cpp (1928, 2002-05-02)
NetTalk\NetTalk\Project\AVIO\AudioRec.cpp (2985, 2002-05-02)
NetTalk\NetTalk\Project\AVIO\AVIOMgr.cpp (28652, 2002-05-05)
NetTalk\NetTalk\Project\AVIO\VideoCapture.cpp (3177, 2002-07-26)
NetTalk\NetTalk\Project\AVIO\VolumeCtrl.cpp (3309, 2002-05-05)
NetTalk\NetTalk\Project\AVIO\wavein.cpp (2714, 2002-05-02)
NetTalk\NetTalk\Project\AVIO\WaveOut.cpp (2731, 2002-05-02)
NetTalk\NetTalk\Project\AVIO\WaveShow.cpp (6433, 2002-05-05)
NetTalk\NetTalk\Project\Codec (0, 2005-09-01)
NetTalk\NetTalk\Project\Codec\CodecMgr.cpp (5109, 2002-07-26)
NetTalk\NetTalk\Project\include (0, 2005-09-01)
NetTalk\NetTalk\Project\include\AddrBook.h (1016, 2002-05-05)
NetTalk\NetTalk\Project\include\AudioPlay.h (699, 2002-05-05)
NetTalk\NetTalk\Project\include\AudioRec.h (849, 2002-05-05)
NetTalk\NetTalk\Project\include\AVFile.h (1339, 2002-05-02)
NetTalk\NetTalk\Project\include\AVIOMgr.h (8293, 2002-07-26)
NetTalk\NetTalk\Project\include\CmdMgr.h (849, 2001-12-06)
NetTalk\NetTalk\Project\include\CodecMgr.h (1333, 2002-05-02)
NetTalk\NetTalk\Project\include\Common.h (717, 2001-12-01)
NetTalk\NetTalk\Project\include\CoolBtn.h (996, 2002-05-02)
NetTalk\NetTalk\Project\include\DataBase.h (411, 2001-12-01)
NetTalk\NetTalk\Project\include\ddutil.h (1040, 1997-07-15)
NetTalk\NetTalk\Project\include\G729a.h (1261, 2001-12-15)
NetTalk\NetTalk\Project\include\GDIX.H (1551, 2002-05-05)
NetTalk\NetTalk\Project\include\GraphDlg.h (1088, 2002-05-05)
NetTalk\NetTalk\Project\include\Hash.h (1277, 2002-05-02)
NetTalk\NetTalk\Project\include\IVolume.h (834, 2001-12-12)
NetTalk\NetTalk\Project\include\Main.h (5002, 2002-05-05)
NetTalk\NetTalk\Project\include\MsgBox.h (975, 2001-12-14)
NetTalk\NetTalk\Project\include\MsgTalk.h (1175, 2002-05-05)
NetTalk\NetTalk\Project\include\NewMsgBox.h (1168, 2002-05-05)
NetTalk\NetTalk\Project\include\RippleWnd.h (1299, 2002-05-02)
NetTalk\NetTalk\Project\include\SlideBar.h (899, 2002-05-05)
NetTalk\NetTalk\Project\include\Splash.h (649, 2002-05-05)
... ...
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