the limits required by the ear
21Absolute 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… …
22Auditory brainstem response — The auditory brainstem response (ABR) is an auditory evoked potential extracted from ongoing electrical activity in the brain and recorded via electrodes placed on the scalp. The resulting recording is a series of vertex positive waves of which I …
23HEBREW GRAMMAR — The following entry is divided into two sections: an Introduction for the non specialist and (II) a detailed survey. [i] HEBREW GRAMMAR: AN INTRODUCTION There are four main phases in the history of the Hebrew language: the biblical or classical,… …
24Foreign Intelligence Surveillance Act — The Foreign Intelligence Surveillance Act of 1978 ( FISA USStatute|95|511|92|1783|1978|10|25, usctc|50|36) is an Act of Congress which prescribes procedures for the physical and electronic surveillance and collection of foreign intelligence… …
25South African law of delict — The South African law of delict engages primarily with the circumstances in which one person can claim compensation from another for harm that has been suffered. [1] JC Van der Walt and Rob Midgley define a delict, in general terms [...] as a… …
26Commonwealth Secretary-General — The Commonwealth Secretary General is the head of the Commonwealth Secretariat, the central body which has served the Commonwealth of Nations since its establishment in 1965, and responsible for representing the Commonwealth publicly.[1] The… …
27Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
28PROSODY, HEBREW — This article is a survey of the history of Hebrew poetic forms from the Bible to the present time. The entry is arranged according to the following outline: introduction the variety of formal systems the specific nature of hebrew literary history …
29Decompression sickness — Caisson disease [decompression sickness] Classification and external resources Two United States Navy sailors prepare for training inside a decompression chamber …
30sound reception — Introduction response of an organism s aural mechanism, the ear, to a specific form of energy change, or sound waves. Sound waves can be transmitted through gases, liquids, or solids, but the hearing function of each species is particularly …
