Even sounds that are pleasant at one volume can become noise to us as they get louder. Other sounds, like a neighbor's barking dog in the middle of the night, are more universally found to be annoying. Some sounds, like a distant train whistle, can be a pleasant sound for some, while being considered noise by others.
You can feel how much more energy goes into yelling. The more energy put into making a sound, the louder it will be. Sound is energy transferred through the air that our ears detect as small changes in air pressure. Recreational Flyers & Modeler Community-Based Organizations.Critical Infrastructure & Public Venues.Certificated Remote Pilots including Commercial Operators.Legislation & Policies, Regulations & Guidance.Data & Research Subnav: Data & Research 1.Airport Safety Information Video Series.Passenger Facility Charge (PFC) Program.Airport Coronavirus Response Grant Program.General Aviation & Recreational Aircraft.Vintage & Experimental Aircraft Program.Aviation Safety Draft Documents Open for Comment.
