Sweden stands out among the other European countries by the degree of restrictive measures taken towards handling the 2019 coronavirus outbreak, associated with the CoViD-19 pandemic. While several governments have imposed a nationwide total or partial lockdown in order to slow down the spread of the virus, the Swedish government has opted for a recommendation-based approach together with a few imposed restrictions. In the present contribution, the impact of this strategy will be observed through the monitored variation of the city noise levels during the associated period. The data used are recorded during a campaign of over a full year of noise level measurements at a building façade situated in a busy urban intersection in central Stockholm, Sweden. The noise level reductions, observed during the period of restrictions, are shown to be comparable to those found for the two most popular public holidays in Sweden with a peak reduction occurring during the first half of April 2020. Contrary to what has been recently discussed in public media, the spread of the virus, the recommendations, and the restrictions imposed during the ongoing pandemic clearly have had a significant effect on the transport and other human-related activities in Stockholm. In this unique investigation, the use of distributed acoustic sensors has thus shown to be a viable solution not only to enforce regulations but also to monitor the effectiveness of their implementation.

瑞典在应对 2019 年冠状病毒爆发（与 CoViD-19 大流行相关）时采取的限制措施程度在其他欧洲国家中脱颖而出。虽然一些国家的政府已经在全国范围内实施了全面或部分封锁，以减缓病毒的传播，但瑞典政府选择了基于建议的方法，并施加了一些限制。在本贡献中，将通过监测相关时期城市噪声水平的变化来观察该策略的影响。使用的数据是在瑞典斯德哥尔摩市中心繁忙的城市十字路口的一栋建筑外墙进行的长达一年多的噪声水平测量活动中记录的。在限制期间观察到的噪音水平降低情况与瑞典两个最受欢迎的公共假期的情况相当，峰值降低发生在 2020 年 4 月上半月。与最近讨论的情况相反公共媒体、病毒的传播、建议以及当前大流行期间施加的限制显然对斯德哥尔摩的交通和其他人类相关活动产生了重大影响。在这项独特的调查中，分布式声学传感器的使用已被证明是一种可行的解决方案，不仅可以执行法规，还可以监控其实施的有效性。