context: The sound can be perceived as hearing, sensory or various measurements. Sound perception is studied in psychoacoustics. Humans and most animals perceive sound through their hearing using their ears. Man cannot hear sounds below 20 Hz or more than 20kHz. Low sounds can also be felt as vibrations if the sound is loud enough. Hearing and the ability to detect high frequencies decrease with age. Hearing impairment is individual. It can be influenced by hereditary factors, common diseases and noise exposure [5]. Loud or high noises can cause pain in the ears. Repeated exposure to loud or loud noises may damage hearing. [6]
question: What sound waves does one hear?
answers.text: Man cannot hear sounds below 20 Hz or more than 20kHz