Acoustics Group, Department of Medical Physics and Acoustics, Excellence Cluster Hearing4all, Carl von Ossietzky University, Carl-von-Ossietzky-Strasse 9-11, 26129 Oldenburg, Germany.
J Acoust Soc Am. 2021 Mar;149(3):2004. doi: 10.1121/10.0003779.
Supersonic aircraft produce a sonic boom when flying faster than the speed of sound. To rule out detrimental effects for inhabitants of overflown areas, civil supersonic flights (like the Concorde) were only allowed to fly at supersonic speed when over water. Due to the progress in aircraft design, the supersonic boom may be reduced considerably in the future. In this study, listening tests were carried out with a variety of low boom simulations and conventional sonic boom signatures in a similar level range. Participants rated the loudness and the short-term annoyance of 24 sonic boom signals, which differed in terms of the signature shape and maximum pressure but were confined to a range of A-weighted sound exposure levels around 60 dB(A). The results showed main effects of signature and relative level variation as well as an interaction of the two. Correlation coefficients between the ratings and sound exposure levels were highest for A-weighted sound exposure levels compared to other frequency weightings. Contrary to our expectations, the provision of background information about the nature of the presented sound sources had no statistically significant influence on the ratings.
当超音速飞机的飞行速度超过音速时，会产生音爆。为了排除被飞越地区居民的不利影响，民用超音速飞行（如协和式飞机）仅被允许在飞越水面时以超音速飞行。由于飞机设计的进步，未来的音爆可能会大大减少。在这项研究中，在类似的声级范围内，使用各种低声爆模拟和常规音爆信号进行了听力测试。参与者对 24 种音爆信号的响度和短期干扰进行了评级，这些信号在信号形状和最大压力方面有所不同，但都限制在 60dB(A)左右的 A 加权声暴露级范围内。结果表明，签名和相对电平变化有主要影响，以及两者的相互作用。与其他频率加权相比，与评级相关的 A 加权声暴露水平的相关系数最高。与我们的预期相反，提供有关所呈现声源性质的背景信息对评级没有统计学上的显著影响。
