The tritone paradox reveals compelling individual differences in the orientation of the pitch class circle derived from judgments of tritone pairs. Some subjects perceive tones in one half of the pitch class circle as higher than tones in the opposite half, whereas other subjects produce the converse pattern. Because geographical differences in perception of the tritone paradox have been found, an interesting issue concerns how subjects in additional regions of the United States may perceive the tritone paradox. A second issue of interest concerns the extent to which the position of the spectral envelope affects how the pattern is perceived. These issues are here addressed in a study of the tritone paradox in a group of subjects from South Florida. With respect to the first issue, the overall histogram of peak pitch classes produced by the subjects from South Florida was similar to the histogram found among Californian subjects. To address the second issue, tone pairs were generated under four spectral envelopes spaced at half-octave intervals. The majority of subjects evidenced differences in peak pitch class of no more than 2 semitones when judgments under each of the four spectral envelopes were compared.

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