Abstract
An inverse relation between the loudness of a 1000-Hz pure tone and the amplitude of the second aural harmonic it generates was reported last year. To investigate more rigorously, normal listeners (N = 12) produced individual absolute loudness scales from ratio (doubling and halving) and equisection (five points over each of three ranges) judgments. These scales have been interrelated using Garner's [J. Acoust. Soc. Amer. 26, 73–88 (1954)] method of corrected ratios. Estimates of the second and third aural harmonics of a 500-Hz pure tone were made from tone-on-tone masking measurements. A comparison of the doubling and halving ratios will be discussed together with the shunting hypothesis: i.e., energy shunted into harmonic production is subtracted from that available for conversion into the magnitude of the loudness sensation.
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