Title :
Speech communication for working group based on LAN
Author :
Lin, Dong ; Biqin, Lin ; Bao-Zhong, Yuan
Author_Institution :
Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China
Abstract :
We present a system which is used for working group speech communication based on a LAN (local area network). In our system we need a multimedia PC and a network adapter. People may use speech to communicate with each other in the working group. The system is based on client/server architecture. Packet exchange is used to pass speech signals through the LAN. In order to shorten the speech communication delay we used the LD-CELP algorithm in the software coder/decoder for signal compression. The original speech signal is 64 kbps compressed to 16 kbps. For speech communication in the working group the system is simpler than the IP phone.
Keywords :
client-server systems; data compression; decoding; delays; linear predictive coding; local area networks; microcomputer applications; multimedia communication; speech coding; transport protocols; voice communication; 16 kbit/s; 64 kbit/s; IP phone; LAN; LD-CELP algorithm; client/server architecture; delay reduction; local area network; multimedia PC; network adapter; packet exchange; signal compression; software coder/decoder; speech communication; speech signal; voice processing software; working group; Error correction codes; Local area networks; Multimedia systems; Network servers; Oral communication; Protocols; Speech; TCPIP; User interfaces; Web server;
Conference_Titel :
Communications, 1999. APCC/OECC '99. Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference
Conference_Location :
Beijing, China
Print_ISBN :
7-5635-0402-8
DOI :
10.1109/APCC.1999.820403
