Doebler William J, Sparrow Victor W
Graduate Program in Acoustics, The Pennsylvania State University, 201 Applied Science Building, University Park, Pennsylvania 16802, USA
J Acoust Soc Am. 2017 Jun;141(6):EL592. doi: 10.1121/1.4986209.
The degree of insensitivity to atmospheric turbulence was evaluated for five metrics (A-, B-, E-weighted sound exposure level, Stevens Mark VII Perceived Level, and NASA's Indoor Sonic Boom Annoyance Predictor) that correlate to human annoyance from sonic booms. Eight N-wave shaped sonic booms from NASA's FaINT experiment and five simulated "low-boom" sonic booms were turbulized by Locey's ten atmospheric filter functions. The B-weighted sound exposure level value changed the least due to the turbulence filters for twelve of thirteen booms. This makes it the most turbulence stable metric which may be useful for quiet supersonic aircraft certification.
针对与音爆引起的人类烦恼相关的五个指标(A加权、B加权、E加权声暴露级、史蒂文斯马克七级感知级以及美国国家航空航天局的室内声爆烦恼预测器),评估了对大气湍流的不敏感程度。美国国家航空航天局的FaINT实验中的八个N波形状的音爆以及五个模拟的“低声爆”音爆,通过洛西的十种大气滤波函数进行了湍流处理。对于十三个音爆中的十二个,B加权声暴露级值因湍流滤波器而变化最小。这使其成为最稳定的湍流指标,可能对安静超音速飞机认证有用。