Teleconference using stereo voice and an electronic OHP

Author

Nunokawa, R. ; Matsumoto, Kaname ; Kamae, T.

Author_Institution

Integrated Commun. Syst., NTT, Tokyo, Japan

fYear

1988

fDate

28 Nov-1 Dec 1988

Firstpage

48

Abstract

An electronic overhead projector (OHP) using a transparent LCD (liquid crystal display) can project character and graphic images generated by a personal computer. Stereo audioconferencing equipment can be combined with the electronic OHP to realize an audiographic conferencing system. A 64 kb/s channel is normally divided into two 32 kb/s subchannels for left and right side voices. When displayed data or control data are transmitted, one of the 32 kb/s subchannels is converted into a control channel and the voices become monaural. It is emphasized that the stereo effect is quite important in detecting which conferee at the other site is speaking

Keywords

audio systems; audio-visual systems; teleconferencing; 32 kbit/s; 64 kbit/s; audiographic conferencing system; character images; electronic OHP; electronic overhead projector; graphic images; left side voices; monaural; personal computer; right side voices; stereo audioconferencing; stereo voice; subchannels; teleconference; transparent LCD; Character generation; Communication system control; Computer displays; Computer graphics; Computer interfaces; Delay effects; Image generation; Loudspeakers; Microcomputers; Teleconferencing;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1988, and Exhibition. 'Communications for the Information Age.' Conference Record, GLOBECOM '88., IEEE

Conference_Location

Hollywood, FL

Type

conf

DOI

10.1109/GLOCOM.1988.25808

Filename

25808