normal threshold of hearing

См. также в других словарях:

• Absolute threshold of hearing — The absolute threshold of hearing (ATH) is the minimum sound level of a pure tone that an average ear with normal hearing can hear with no other sound present. The absolute threshold relates to the sound that can just be heard by the… …   Wikipedia

• Hearing range — for more detail on human hearing see Audiogram,Equal loudness contours and Hearing impairment. Hearing range usually describes the range of frequencies that can be heard by an animal or human, though it can also refer to the range of levels. In… …   Wikipedia

• Hearing (sense) — Hearing (or audition) is one of the traditional five senses. It is the ability to perceive sound by detecting vibrations via an organ such as the ear. The inability to hear is called deafness.In humans and other vertebrates, hearing is performed… …   Wikipedia

• Hearing impairment — See also: Deaf culture for the social movement.. Deaf and/or hard of hearing Classification and external resources The International Symbol for Deafness …   Wikipedia

• Hearing test — A hearing test is an evaluation of the sensitivity of a person s sense of hearing, most often performed by an audiologist using an audiometer. Audiologists are the only health professionals with extensive training on the anatomy and physiology of …   Wikipedia

• Pain threshold — The term pain threshold refers to the maximum intensity or duration of a sensory stimulus at which the body shuts down. In scientific literature the term is clearly differentiated from the term pain tolerance. Pain threshold is the minimum… …   Wikipedia

• Pure tone audiometry — (PTA) is the key hearing test used to identify hearing threshold levels of an individual, enabling determination of the degree, type and configuration of a hearing loss. Thus, providing the basis for diagnosis and management. PTA is a subjective …   Wikipedia

• ear, human — ▪ anatomy Introduction       organ of hearing and equilibrium that detects and analyzes noises by transduction (or the conversion of sound waves into electrochemical impulses) and maintains the sense of balance (equilibrium).  The human ear, like …   Universalium

• sound — sound1 soundable, adj. /sownd/, n. 1. the sensation produced by stimulation of the organs of hearing by vibrations transmitted through the air or other medium. 2. mechanical vibrations transmitted through an elastic medium, traveling in air at a… …   Universalium

• Sound — /sownd/, n. The, a strait between SW Sweden and Zealand, connecting the Kattegat and the Baltic. 87 mi. (140 km) long; 3 30 mi. (5 48 km) wide. Swedish and Danish, Oresund. * * * I Mechanical disturbance that propagates as a longitudinal wave… …   Universalium

• Critical band — The term critical band, introduced by Harvey Fletcher in the 1940s, referred to the frequency bandwidth of the then loosely defined auditory filter. Psychophysiologically, beating and auditory roughness sensations can be linked to the inability… …   Wikipedia