Communication system, user equipment and method of performing a conference call thereof

作者: Howard Thomas , Gerry Foster

DOI:

关键词:

摘要: This invention relates to a communication system (200), user equipment (201,211) and method of performing conference call. The (200) employs discontinuous transmission has plurality (201, 211, 213, 215) fixed network (205, 207, 208). It further comprises speech metric processor (225) for determining if is originating at the equipment. also silence descriptor frame generator (229) which generate frames no call (231) involving Furthermore means (229, 239) suppressing informationof applicable cellular mobile radio systems such as UMTS.

参考文章(12)
Sayandev Mukherjee, Richard Dennis Gitlin, Sanjay Kasturia, A method of muting a non-speaking cellular telephone caller participating in a conference call ,(1998)
Y. Li, S. Andresen, Multipoint conferencing for mobile communications network ieee international conference on universal personal communications. ,vol. 1, pp. 212- 216 ,(1993) , 10.1109/ICUPC.1993.528379
Charles W. K. Gritton, Richard C. Younce, Daniel J. Marchok, Consolidated voice activity detection and noise estimation ,(2002)
F. Beritelli, S. Casale, G. Ruggeri, New speech processing issues in IP telephony international conference on communication technology. ,vol. 1, pp. 652- 656 ,(2000) , 10.1109/ICCT.2000.889286
Claypool, Riedl, Silence is golden?-the effects of silence deletion on the CPU load of an audio conference international conference on multimedia computing and systems. pp. 9- 18 ,(1994) , 10.1109/MMCS.1994.292427
A. Benyassine, E. Shlomot, H.-Y. Su, D. Massaloux, C. Lamblin, J.-P. Petit, ITU-T Recommendation G.729 Annex B: a silence compression scheme for use with G.729 optimized for V.70 digital simultaneous voice and data applications IEEE Communications Magazine. ,vol. 35, pp. 64- 73 ,(1997) , 10.1109/35.620527
Matti Lehtimäki, Transcoder with prevention of tandem coding of speech Journal of the Acoustical Society of America. ,vol. 108, pp. 885- ,(1996) , 10.1121/1.1319424