loudness level contour

См. также в других словарях:

• Contour — may refer to: an outline or silhouette a contour line on a contour map, or the corresponding line on the ground or sea bed Contour (linguistics), a phonetic sound Pitch contour (music), a melody shape Contour (camera system), a 3D digital camera… …   Wikipedia

• 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

• Tone contour — A tone contour is a tone in a tonal language which shifts from one pitch to another over the course of the syllable or word. Tone contours are especially common in East and Southeast Asia, but occur elsewhere, such as the Kru languages of Liberia …   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

• ГОСТ Р ИСО 226-2009: Акустика. Стандартные кривые равной громкости — Терминология ГОСТ Р ИСО 226 2009: Акустика. Стандартные кривые равной громкости оригинал документа: 3.5 кривая равной громкости (equal loudness level contour): График в координатах «УЗД частота», ординаты точек которого соответствуют частоте… …   Словарь-справочник терминов нормативно-технической документации

• кривая равной громкости — 3.5 кривая равной громкости (equal loudness level contour): График в координатах «УЗД частота», ординаты точек которого соответствуют частоте чистых тонов, воспринимаемых равными по громкости. Источник: ГОСТ Р ИСО 226 2009: Акустика. Стандартные… …   Словарь-справочник терминов нормативно-технической документации

• стандартная кривая равной громкости — 3.6 стандартная кривая равной громкости (normal equal loudness level contour): Кривая равной громкости, построенная по усредненным ощущениям людей с нормальным слухом в возрасте от 18 до 25 лет включительно. Примечание Метод построения… …   Словарь-справочник терминов нормативно-технической документации

• 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

• 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

• 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