Mobile videotelephony for deaf people: the effect of video quality on the use of text telephony

Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324) Pub Date : 1999-09-19 DOI:10.1109/VETECF.1999.798602

H. Kamphuis, H. Frowein, E. Rikken, J. Spoor

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引用次数: 5

Abstract

This paper reports on a usability study from the perspective of deaf persons of a prototype videotelephony service implemented on a mobile network. The service offered combined video- and text communication. The objective of the experiment was to determine the minimal bandwidth requirements for deaf sign language users and to measure the effect of variable video picture quality on the use of the text telephone. The results of this study indicate that deaf persons who use sign language as their main communication mode are highly adaptable and prefer to use signs even if the video image quality is poor. At the same time, deaf persons expressed a preference for having a text messaging facility available in combination with videotelephony. It was found that the use of the text messages increased with deteriorating video picture quality. A bandwidth of 128 kbps was considered highly useable. Even at 64 kbps some users could communicate through sign language.

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聋人移动可视电话:视频质量对文字电话使用的影响

本文从聋人的角度对移动网络上实现的可视电话服务原型进行了可用性研究。这项服务提供视频和文字通信的结合。实验的目的是确定聋哑人手语用户的最小带宽需求，并测量可变视频图像质量对文本电话使用的影响。本研究结果表明，以手语为主要沟通方式的聋人具有较强的适应能力，即使视频图像质量较差，他们也倾向于使用手语。与此同时，聋哑人表示，他们更希望有一个结合可视电话的短信设施。研究发现，随着视频图像质量的恶化，短信的使用也在增加。128 kbps的带宽被认为是高度可用的。即使在64kbps的速度下，一些用户也可以通过手语进行交流。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Gateway to 21st Century Communications Village. VTC 1999-Fall. IEEE VTS 50th Vehicular Technology Conference (Cat. No.99CH36324)

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