loudness(-level) curves

См. также в других словарях:

• Equal-loudness contour — An equal loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. The unit of measurement for loudness levels is the phon, and …   Wikipedia

• Fletcher–Munson curves — The Fletcher–Munson curves are one of many sets of equal loudness contours for the human ear, determined experimentally by Harvey Fletcher and W A Munson, and reported in a paper entitled Loudness, its definition, measurement and calculation in J …   Wikipedia

• Robinson-Dadson curves — The Robinson Dadson curves are one of many sets of equal loudness contours for the human ear, determined experimentally by D W Robinson and R S Dadson, and reported in a paper entitled A re determination of the equal loudness relations for pure… …   Wikipedia

• Programme level — refers to the level that an audio source is transmitted or recorded at, and is important in audio if listeners to CD s, radio and television are to get the best experience, without excessive noise in quiet periods or compression of loud sounds.… …   Wikipedia

• Sound level meter — Type 1 Sound Level Meter (Shown: Svantek 979) Sound level meters measure sound pressure level and are commonly used in noise pollution studies for the quantification of almost any noise, but especially for industrial, environmental and aircraft… …   Wikipedia

• A-weighting — A graph of the A , B , C and D weightings across the frequency range 10 Hz – 20 kHz Video illustrating A weighting by analyzing a sine sweep (contains audio) A weighting is the most …   Wikipedia

• 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

• Phon — The phon was proposed as a unit of perceived loudness level L N for pure tones [ [http://www.phys.unsw.edu.au/ jw/dB.html#log UNSW Music Acoustics ] ] by S. S. Stevens. The purpose of the phon scale is to compensate for the effect of frequency on …   Wikipedia

• Weighting filter — A weighting filter is used to emphasise or suppress some aspects of a phenomenon compared to others, for measurement or other purposes. Contents 1 Audio application …   Wikipedia

• Critical bands — The term critical band, introduced by Harvey Fletcher in the 1940s, referred to the frequency bandwidth of the then loosely defined auditory filter. Since Georg von Békésy’s studies (1960), the term also refers literally to the specific area on… …   Wikipedia