| 单词 | sensation unit |
| 释义 | > as lemmassensation unit sensation unit n. now chiefly historical a dimensionless unit used to measure the magnitude of a sensation, esp. an auditory sensation, above an absolute threshold of perception (one sensation unit corresponding to the least perceptible change in magnitude of the sensation). ΚΠ 1887 S. Bryant Educational Ends ii. iv. 199 The problem can only be solved indirectly,..by choice of an object yielding a sensation-unit of the quality, and ascertaining the number of these necessary to produce the same sensational effect as the object yielding the degree of quality to be measured. 1894 J. E. Creighton & E. B. Titchener tr. W. M. Wundt Lect. Human & Animal Psychol. iii. 35 How great must a given stimulus be made, in order that the sensation may increase by a definite number of sensation units? 1926 Arch. Otolaryngology Feb. 109 The intensity of the tones in the vacuum tube audiometers are usually given in terms of absolute energy or extrapolations of these values in terms of sensation units. 1962 Science 14 Dec. 1274/3 In both scales the basic assumption is that the sum of jnd's [= just-noticeable differences] (sensation units) equals a sensation magnitude. 2002 E. A. Thompson Soundscape of Modernity (2004) iv. 148 The noisiest spot measured by Free was one of the city's busiest traffic intersections, at 34th Street and Sixth Avenue, with a noise level of 55 sensation units. < as lemmas |
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