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Case study increasing usability of voice activated dialing systems

机译:通过案例研究提高语音拨号系统的可用性

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Research suggests that cellular phone use while driving increases the risk of an auto accident by a factor of 4. Additionally it has yet to be shown that hands-free phones (such as those which use voice-activated dialing systems (VADS)) provideany added safety benefit over manual phones. Since it has been shown that driving performance is degraded during complex conversations especially under demanding driving conditions it makes sense to design the VADS interface to be as intuitive and simpleto navigate as possible in order to reduce the risk of an accident. This paper presents the results of an investigation of a commercially available voice-activated dialing system under simulated driving conditions and provides recommendations forimprovement of its call flows and user-interface design. Considering the call flow findings, we conclude that the voice phone book metaphor provides an adequate mental map which helps users navigate the menu hierarchy with some minor exceptions. Withregard to the user interface design findings we conclude that any VADS could be improved by following the principles of conversational speech such as avoiding repetition and being flexible in its handling of interruptions.
机译:研究表明,驾驶时使用蜂窝电话会使发生交通事故的风险增加4倍。此外,尚未证明免提电话(例如使用声控拨号系统(VADS)的免提电话)可以提供任何附加功能。安全性优于手动电话。由于已经显示出,在复杂的对话中,尤其是在苛刻的驾驶条件下,驾驶性能会下降,因此将VADS接口设计为尽可能直观和易于导航是有意义的,以减少发生事故的风险。本文介绍了在模拟驾驶条件下对市售声控拨号系统进行调查的结果,并提出了改善其呼叫流程和用户界面设计的建议。考虑到呼叫流的发现,我们得出结论,语音电话簿隐喻提供了足够的思维导图,可帮助用户导航菜单层次结构,但有一些次要异常。关于用户界面设计的发现,我们得出结论,遵循对话语音的原则(例如避免重复和灵活处理中断)可以改善任何VADS。

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