| 单词 | pure tone | 
| 释义 | > as lemmaspure tone  c.  Of sound: not discordant or harsh, perfectly in tune, clear and even in tone; (Music and Acoustics) produced by a vibration of a single frequency, with no overtones or harmonics; chiefly in  pure tone (cf. simple tone n. at simple adj., n., adv., and int. Compounds 3). ΘΚΠ society > leisure > the arts > music > musical sound > 			[adjective]		 > timbre or quality > pure or clear brightOE silver1526 silvered1642 purea1791 silvery1824 pellucid1952 the world > matter > physics > science of sound > vibration > 			[noun]		 > simple tone simple tone1864 partial1873 pure tone1902 tone1919 sine tone1962 the world > matter > physics > science of sound > vibration > 			[adjective]		 > of single frequency pure tone1961 a1791    F. Hopkinson Misc. Ess. & Occas. Writings 		(1792)	 I. 289  				A substance..sufficiently elastic for the purpose..shall draw a full and pure tone from the string [of a harpsichord]. 1845    E. Holmes Life Mozart 104  				She has a beautiful voice—neither strong nor weak, but very pure and good in the intonation. 1870    Nature 3 Mar. 458/2  				This interval should, therefore, give no beats, and an impure octave be as harmonious as a pure one. 1889    J. Lecky in  G. Grove Dict. Music IV. 70/2  				If..all the consonant intervals are made perfectly smooth and pure, so as to give no beats, the tuning is then called Just Intonation. 1902    Encycl. Brit. XXXI. 751/2  				Considerable difference of opinion exists as to whether beats can blend so as to give a sensation of tone; but König, by using very pure tones of high pitch, appears to have settled the question. 1961    Lancet 22 July 197/2  				Pure-tone audiometry is only one item in a whole range of tests that are needed to build up a complete picture of the condition of a patient who has a hearing-loss. 1976    L. H. Schaudinischky Sound, Man & Building i. 30  				The beat grows progressively lower and vanishes altogether when f1 = f2. This gives rise to a method of extremely accurately determining the unknown frequency of a pure tone. 2005    Independent 		(Nexis)	 12 Aug. (Features) 5  				What you often get with these northern orchestras is a weighty, pure bass sound. < as lemmas  | 
	
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