hearing threshold level

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• 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

• threshold — thresh|old [ θreʃ,hould ] noun count 1. ) a limit at which an arrangement changes. For example a tax threshold is the level of income or profit at which you start to pay a tax: above/below a threshold: The company s turnover is well below the tax …   Usage of the words and phrases in modern English

• threshold — UK [ˈθreʃˌhəʊld] / US [ˈθreʃˌhoʊld] noun [countable] Word forms threshold : singular threshold plural thresholds 1) a) a limit at which an arrangement changes. For example a tax threshold is the level of income or profit at which you start to pay …   English dictionary

• level — 1. Any rank, position, or status in a graded scale of values. 2. A test for determining such rank or position. acoustic reference l. the biological reference l. for sound measurements. When the term decibel is used to …   Medical dictionary

• Hearing conservation program — Hearing conservation programs are design to prevent noise induced hearing loss. A written hearing conservation program is required by the Occupational Safety and Health Administration (OSHA) “whenever employee noise exposures equal or exceed an 8 …   Wikipedia

• Threshold of pain — The threshold of pain is the point at which pain begins to be felt. It is an entirely subjective phenomenon. The intensity at which a stimulus (e.g., heat, pressure) begins to evoke pain is the threshold intensity.[1] So, if a hotplate on a… …   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

• 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

• Masking threshold — The masking threshold is the sound pressure level of a sound needed to make the sound perceptible in the presence of another noice, called a masker . This threshold depends upon the frequency, the kind of masker, and the kind of sound being… …   Wikipedia

• Absolute threshold — In neuroscience and psychophysics, an absolute threshold is the smallest detectable level of a stimulus. For example, in an experiment on sound detention, researchers may present a sound with varying levels of volume. The smallest level that a… …   Wikipedia

• sound-level meter — ▪ instrument       device for measuring the intensity of noise, music, and other sounds. A typical meter consists of a microphone for picking up the sound and converting it into an electrical signal, followed by electronic circuitry for operating …   Universalium