Why is the speed of sound a barrier for aircraft? - Quora
Frontiers | Long-Term Effects of Aircraft Noise Exposure on Vascular Oxidative Stress, Endothelial Function and Blood Pressure: No Evidence for Adaptation or Tolerance Development
GoldMethod
Aircraft Noise Emission Model Accounting for Aircraft Flight Parameters | Journal of Aircraft
Ask a Pilot with Spencer: What is That Barking Sound? -
Instrument Landing System (ILS)
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Marker beacon - Wikipedia
Is Your Noisy Neighborhood Slowly Killing You? – Mother Jones