It takes two to tango - assessing the impact of delay on conversational interactivity on perceived speech quality
It takes two to tango - assessing the impact of delay on conversational interactivity on perceived speech quality
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探戈需要两个人 - 评估会话交互性延迟对感知语音质量的影响
DOI：
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发表时间：
2010
期刊：
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通讯作者：
Stefan Scherer
中科院分区：
文献类型：
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作者：
Sebastian Egger;R. Schatz;Stefan Scherer
本文分析了双向语音的传输延迟、会话交互性和感知质量之间的关系。我们的工作基于我们实验室进行的主观语音质量测试的结果以及该领域的最新研究。测试实验不仅量化了未经训练的受试者感知到的网络延迟对语音质量的影响。他们还使用三种不同的对话场景评估对话交互性 (CI) 和延迟之间的相互影响。我们的结果表明，对话交互性水平与对话者的延迟敏感性之间存在明显的正相关关系。另一个重要发现是，即使在高交互性的环境中，高达 400 毫秒的单向延迟值也不会对未经训练的参与者对整体语音质量的感知产生任何重大影响。此外，我们还检查了参与者在各种延迟条件（最多 1600 毫秒）下对话的表面结构。我们的分析展示了如何成功使用意外中断率 (UIR) 等其他指标来确定对话的表面结构和延迟敏感度。
This paper analyzes the relationship between transmission delay, conversational interactivity and perceived quality of bi-directional speech. Our work is grounded on the results of subjective speech quality tests conducted in our lab and recent studies in this field. The test experiments do not only quantify the impact of network delay on speech quality as perceived by untrained subjects. They also assess the mutual influences between conversational interactivity (CI) and delay using three different conversation scenarios. Our results show a clear positive correlation between the level of conversational interactivity and interlocutors’ delay sensitivity. Another key finding is that even in contexts of high interactivity, one-way delay values up to 400 ms did not have any significant impact on untrained participants’ perception of overall speech quality. Furthermore, we examine the surface structure of participants’ conversations across a wide range of delay conditions (up to 1600 ms). Our analysis demonstrates how additional metrics such as unintended interruption rate (UIR) can be successfully used to determine the surface structure and delay sensitivity of a conversation.