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首页> 外文会议>International Building Physics Conference >The same reverberation time in two identical rooms does not necessarily mean the same levels of speech clarity and sound levels when we look at impact of different ceiling and wall absorbers.
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The same reverberation time in two identical rooms does not necessarily mean the same levels of speech clarity and sound levels when we look at impact of different ceiling and wall absorbers.

机译：当我们看看不同天花板和墙壁吸收器的影响时，两个相同房间中的相同混响时间不一定意味着相同的言语清晰度和声级。

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摘要

For setting the acoustic conditions in a classroom for teaching and learning activities, it is common to only measure Reverberation Time (RT). To calculate the RT in rooms with ceiling absorption is common but this data can also be misleading. Indeed, we measured the similar RT values in two identical rooms with different acoustic treatment, even though the calculations predicted significant differences and interestingly the rooms are also be perceive quite differently in reality. Taking the human response to sound into account the measured RT data alone leaves us in the dark when seeking to explain the difference in human user perception. Measuring additional room acoustic parameters such as speech clarity and the difference in sound levels, identifies other important differences between the two unoccupied but furnished rooms with the same RT and points to why only one of the two rooms seems fit for purpose as a group activity room. We will discuss how to achieve room acoustic comfort in classrooms; short RT, low sound levels and high speech clarity. In addition to commonly accepted short RT values we will discuss recommended objective values for good Speech Clarity to support good speech communication activities in typical teaching and learning rooms in real life situations.
机译：为了在教室中设置声学条件进行教学和学习活动，才能仅测量混响时间（RT）。为了计算具有天花板吸收的房间内的RT是常见的，但这种数据也可能是误导性的。实际上，我们在两个相同的房间中测量了一个具有不同声学处理的相同房间的类似RT值，即使计算预测了显着差异，有趣的是，房间也在现实中完全不同地看待。考虑到声音的人类反应考虑到所测量的RT数据在寻求解释人类用户感知的差异时，仅在黑暗中留下了我们。测量额外的房间声学参数，如语音清晰度和声级别的差异，识别两个未占用但具有同样RT的其他房间之间的其他重要差异，为什么两个房间中只有一个似乎适合作为群体活动室似乎适合。我们将讨论如何在教室中实现房间声学舒适度;短RT，低音水平和高音清晰度。除了常见的短RT值外，我们还将讨论良好的言语清晰度的推荐客观价值，以支持现实生活中典型教学和学习室的良好语音通信活动。

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