A fundamental study for participating in multiple teleconferences

Hironori Egi, Hisashi Anzai, Itaru Takata, Ken Ichi Okada

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The purpose of this research is to support office workers to participate in multiple teleconferences simultaneously. In order to achieve this goal, we have investigated how people understand multiple voices that differ in conditions of overlapping rates. We have evaluated comprehension of the context and the keywords in multiple voices, which is necessary for the users to participate in multiple teleconferences. In addition, we have described the psychological load of the users by using NASA-TLX as the workload index and the physiological load by examining the brain waves of the users. From the experiment, we can show three factors. First, we found more than half of the examinees understand the context when the voices are overlapped completely. Second, little of no difference is observed in the level of comprehension of keywords, between when the voices are half overlapped and overlapped completely. Third, it can also be suggested that examinees are more uncertain of their answers when the voices are overlapped completely compared to when they are only half overlapped. As for the load of the users, our results suggested that imperfect overlap amplifies the psychological load. Based on these results, we will discuss the necessity of selecting appropriate overlap rates and design the environment of multiple teleconferences.

Original languageEnglish
Title of host publicationHuman-Computer Interaction - INTERACT 2007 - 11th IFIP TC 13 International Conference, Proceedings
PublisherSpringer Verlag
Number of pages14
EditionPART 2
ISBN (Print)9783540747994
Publication statusPublished - 2007
Externally publishedYes
Event11th IFIP TC 13 International Conference on Human-Computer Interaction, INTERACT 2007 - Rio de Janeiro, Brazil
Duration: 2007 Sept 102007 Sept 14

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 2
Volume4663 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other11th IFIP TC 13 International Conference on Human-Computer Interaction, INTERACT 2007
CityRio de Janeiro


  • Multiple teleconferences
  • Multiple voices
  • Multitask
  • Overlap rate

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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