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

fYear

1999

fDate

1999

Firstpage

547

Lastpage

552

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Multimedia Signal Processing, 1999 IEEE 3rd Workshop on

Conference_Location

Copenhagen

Print_ISBN

0-7803-5610-1

Type

conf

DOI

10.1109/MMSP.1999.793911

Filename

793911