Abstract The function of libraries has changed considerably in recent decades. This article presents the case study of the acoustic properties of the National Library of Technology (NTK), built in 2009, visited by more than 2000 users daily. From the acoustic point of view, these are coupled spaces, with horizontally structured spaces, which allow for dividing the space into zones according to the function of use. Through their openness, the individual floors can partially be viewed as open-space offices. Moreover, all floors are connected by a common central atrium, which is the cause of the mentioned acoustic coupling. Undesirable and annoying noise is one of the fundamental problems of these spaces. This article deals with the relationship between the number of visitors, noise in a given space and its acoustic parameters and the impact of these parameters on acoustic comfort, which is a compromise between RT, STI and noise.

中文翻译：

---

国家技术图书馆声环境预期——案例研究

摘要 近几十年来，图书馆的功能发生了很大变化。本文介绍了国家技术图书馆 (NTK) 的声学特性案例研究，该图书馆建于 2009 年，每天有 2000 多名用户访问。从声学的角度来看，这些是耦合空间，具有水平结构的空间，可以根据使用功能将空间划分为多个区域。通过它们的开放性，各个楼层可以部分地被视为开放空间的办公室。此外，所有楼层都由一个共同的中庭连接，这就是上述声学耦合的原因。令人讨厌和烦人的噪音是这些空间的基本问题之一。本文处理的是访问者数量之间的关系，