Abstract
"Evidence seems to warrant the conclusion that complex tones have, in addition to pitch and loudness, at least three attributes. These are brightness, roughness, and one tentatively labelled fullness. The first two are probably more basic than the third. Brightness is a function of the location on the frequency continuum of the mid-point of the energy distribution. The results of the quality-matching experiment suggest that the attribute of brightness in complex tones is not similar to the attribute of pitch-brightness in pure tones. Roughness has been shown to be present in tones containing consecutive high partials above the sixth and to be a function of the location of such partials in the whole sequence of higher partials. Fullness has been shown to be a function of the relative presence of odd- and even-numbered partials . . … Roughness and fullness may be different functions of one variable: complexity of frequency ratios between partials." (PsycINFO Database Record (c) 2006 APA, all rights reserved)

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