noun
aerodynamic sound; aerodynamic noise
Technical term in physics and engineering for sound generated by airflow around objects.
新幹線の空力音を低減する研究が進められている。
Research is underway to reduce the aerodynamic noise of the Shinkansen.
風洞実験で車両の空力音を測定した。
We measured the aerodynamic sound of the vehicle in a wind tunnel test.
騒音 is general noise; 空力音 is a specific type of noise caused by airflow.
Compound of 空力 (aerodynamics) and 音 (sound).