An experimental delay analysis for local audio video streams for desktop collaborations

Author(s):  
Doo-Hyun Kim ◽  
Kyung-Hee Lee ◽  
Min-Gyu Kang ◽  
Geun-Hee Han ◽  
ChanGun Jung
ETRI Journal ◽  
1997 ◽  
Vol 19 (4) ◽  
pp. 344-362
Author(s):  
Doo-Hyun Kim Kim ◽  
Kyung Hee Lee Lee ◽  
Sang Hwan Kung Kung ◽  
Jin Hyung Kim Kim

Author(s):  
Padmalaya Nayak ◽  
Shelendra Kumar Sharma

With the rapid growth of Cloud Computing, various diverse applications are growing exponentially through large data centers with the use of Internet. Cloud gaming is one of the most novel service applications that helps to store the video games in cloud and client can access the games as audio/video streams. Cloud gaming in practice substantially reduces the computational cost at the client side and enables the use of thin clients. Further, Quality of Service (QoS) may be affected through cloud gaming by introducing access latency. The objective of this chapter is to bring the impact and effectiveness of cloud gaming application on users, Health care, Entertainment, and Education.


Author(s):  
Fabian Di Fiore ◽  
Peter Quax ◽  
Wim Lamotte ◽  
Frank Van Reeth

In the ASCIT project, several elements of Multi-user Virtual Environments were integrated into a demonstrator enabling long term sick children to communicate efficiently with their regular school and classroom learning environment. By presenting them with an attractive and game-like interface, combined with state-of-the-art audio and video communication means, the children were encouraged to spend time using the system and to keep up with the day-to-day classroom activities. The authors will describe in detail the three interacting parts in the development cycle. Starting off with the analysis section, the authors describe how the requirements for the system were gathered. In the section on the technical development, they present an overview of the various technical challenges posed by the usage scenario, including real-time transmission of several high quality audio/video streams. Finally, user evaluation was performed on the demonstrator to determine to what extent the system efficiently addressed the identified concerns in the analysis stage.


2014 ◽  
Vol 687-691 ◽  
pp. 1916-1920
Author(s):  
Hong Cheng Tian ◽  
Hong Wang

With the rapid development of computer and network technology, our everyday life is more and more influenced. In the information age it is an inevitable trend that consumer electronics will become more and more intelligentized and interconnected. Taking into account the characteristics of external network users’ access to a home networking, as well as the important role that the residential gateway plays in the interaction between external networks and home networking, this paper presents the idea of a unique access interface of the home networking. Furthermore, this paper designs and implements an IPv6-based UPnP real-time video and audio capture device, and the real-time audio/video stream captured is forwarded to external network users through the residential gateway. Other multimedia applications can be resolved in the same way.


Author(s):  
Stephanie Guerlain ◽  
Thomas Shin ◽  
Hui Guo ◽  
Reid Adams ◽  
J. Forrest Calland

We have developed a digital audiovisual recording and analysis system for studying team behavior. The system uses four computes to collect up to four video and eight audio signals. A separate software package is used to synchronize, view, analyze and score the audio/video streams.


Author(s):  
Stephanie Guerlain ◽  
Thomas Shin ◽  
Hui Guo ◽  
Reid Adams ◽  
J. Forrest Calland

At present there exists no commercially available product capable of capturing and broadcasting multimedia audiovisual data from teams performing high-risk work. We have developed such a recording and analysis system for the purpose of studying team behavior, which we currently use to observe and record up to 8 people working as a co-located team in a hospital operating room. The system has four data collection computers, each recording one video stream and up to 2 audio feeds. A separate software package is used to synchronize and view the audio/video streams together on a fifth computer. This software has several annotation and scoring features which can be used either for data analysis or for team debriefing purposes. Although currently being used for patient safety research in the operating room, this system could also be adapted to collect and analyze team behavior in other domains, even for participants who are distributed.


1998 ◽  
Vol 41 (6) ◽  
pp. 1282-1293 ◽  
Author(s):  
Jane Mertz Garcia ◽  
Paul A. Dagenais

This study examined changes in the sentence intelligibility scores of speakers with dysarthria in association with different signal-independent factors (contextual influences). This investigation focused on the presence or absence of iconic gestures while speaking sentences with low or high semantic predictiveness. The speakers were 4 individuals with dysarthria, who varied from one another in terms of their level of speech intelligibility impairment, gestural abilities, and overall level of motor functioning. Ninety-six inexperienced listeners (24 assigned to each speaker) orthographically transcribed 16 test sentences presented in an audio + video or audio-only format. The sentences had either low or high semantic predictiveness and were spoken by each speaker with and without the corresponding gestures. The effects of signal-independent factors (presence or absence of iconic gestures, low or high semantic predictiveness, and audio + video or audio-only presentation formats) were analyzed for individual speakers. Not all signal-independent information benefited speakers similarly. Results indicated that use of gestures and high semantic predictiveness improved sentence intelligibility for 2 speakers. The other 2 speakers benefited from high predictive messages. The audio + video presentation mode enhanced listener understanding for all speakers, although there were interactions related to specific speaking situations. Overall, the contributions of relevant signal-independent information were greater for the speakers with more severely impaired intelligibility. The results are discussed in terms of understanding the contribution of signal-independent factors to the communicative process.


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