Title :
Designing a PC-based real-time speech communication system
Author :
Yap, Christopher K C ; Lin, Xiao
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
We present a low bit rate base band speech communication system by using the PC and Windows environment. The speech codec is the US DoD standard MELP with a bit rate of 2.4 kbps. This system is especially suitable for a channel transmission rate of less than 2.4 kbps environment. The system provides an RS-232 serial port interface for a normal modem as well as a TCP/IP interface for LAN. A Pentium 133 with a normal sound card is enough for such full duplex implementation
Keywords :
local area networks; microcomputer applications; military standards; multimedia systems; real-time systems; speech codecs; speech processing; transport protocols; 2.4 kbit/s; DoD standard; LAN; MELP; Pentium 133; RS-232 serial port interface; TCP/IP interface; Windows; channel transmission rate; full duplex implementation; low bit rate base band speech communication; modem; multimedia; personal computer; real-time speech communication system; sound card; speech codec; Bit rate; Communication system control; Graphical user interfaces; Hardware; Local area networks; Modems; Oral communication; Personal communication networks; Real time systems; Speech codecs;
Conference_Titel :
Multimedia Signal Processing, 1999 IEEE 3rd Workshop on
Conference_Location :
Copenhagen
Print_ISBN :
0-7803-5610-1
DOI :
10.1109/MMSP.1999.793911
