Automatic addition and deletion of clients in VoIP conferencing

Author

Prasad, R. Venkatesha ; Kuri, Joy ; Jamadagni, H.S. ; Dagale, Haresh ; Ravindranath, R.A.

Author_Institution

Centre for Electron. Design & Technol., Indian Inst. of Sci., Bangalore, India

fYear

2001

fDate

2001

Firstpage

386

Lastpage

391

Abstract

In a conference, considering the packets only from a set of selected clients can reduce the degradation of the quality of speech because mixing packets from all clients can lead to lack of clarity in the speech of any participants. The automatic selection should be smooth and should not cause frequent interruptions. A method of selecting the clients for mixing is suggested here based on a new quantifier of the voice activity called loudness number (LN). The dependence of the loudness number on the amplitude of the packet at present and the past activity is clearly brought out. The structure of the packet used has been explained. A method to avoid echo and enhance the quality of the conference is presented. The contributions of the paper are expected to aid in the implementation of H.323 recommendations for the multipoint processors (MP). A working prototype based on the proposed loudness number is already functional

Keywords

Internet telephony; packet switching; speech intelligibility; speech processing; telecommunication standards; teleconferencing; H.323 recommendations; VoIP conferencing; automatic client addition; automatic client deletion; echo avoidance; loudness number; multipoint processors; packet amplitude; packet structure; speech quality; voice activity; Bandwidth; Codecs; Communication standards; Degradation; Delay; Internet telephony; Prototypes; Speech; Streaming media; Videoconference;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers and Communications, 2001. Proceedings. Sixth IEEE Symposium on

Conference_Location

Hammamet

ISSN

1530-1346

Print_ISBN

0-7695-1177-5

Type

conf

DOI

10.1109/ISCC.2001.935403

Filename

935403