hypersonists

Hypersonists are individuals who claim to have the ability to perceive sounds beyond the normal human hearing range, specifically those frequencies above the typical upper limit of around 20 kilohertz. These claims often extend to the perception of ultrasound, which is used in applications like sonar and medical imaging, and even infrasound, frequencies below the human hearing range.

The concept of hypersonics, or hypersound, in this context refers to these purported extended auditory capabilities rather than the scientific definition of hypersonic speeds. While some individuals may report experiencing sounds that others cannot, scientific explanations for such perceptions are often sought. These can include phenomena like auditory illusions, misinterpretations of bodily sensations, or actual detection of very low-amplitude sounds within the audible range that are amplified by environmental factors or individual sensitivities.

There is no established scientific consensus or verifiable evidence that confirms the existence of a distinct biological trait allowing humans to consistently and reliably perceive frequencies significantly beyond the standard audiometric range. Research in audiology and neuroscience generally attributes reported experiences to a combination of psychological and physiological factors. Nevertheless, individuals who identify as hypersonists often describe vivid experiences and are sometimes involved in online communities discussing their perceived abilities.