Department of Experimental Psychology, University of Cambridge, Downing Street, Cambridge CB2 3EB, England.
J Acoust Soc Am. 2013 Aug;134(2):1193-204. doi: 10.1121/1.4812754.
The dominant region for pitch for complex tones with low fundamental frequency (F0) was investigated. Thresholds for detection of a change in F0 (F0DLs) were measured for a group of harmonics (group B) embedded in a group of fixed non-overlapping harmonics (group A) with the same mean F0. It was assumed that F0DLs would be smallest when the harmonics in group B fell in the dominant region. The rank of the lowest harmonic in group B, N, was varied from 1 to 15. When all components had the same level, F0DLs increased with increasing N, but the increase started at a lower value of N for F0 = 200 Hz than for F0 = 50 or 100 Hz, the opposite of what would be expected if the dominant region corresponds to resolved harmonics. When the component levels followed an equal-loudness contour, F0DLs for F0 = 50 Hz were lowest for N = 1, but overall performance was much worse than for equal-level components, suggesting that the lowest harmonics were masking information from the higher harmonics.
本文研究了低频（基频）复音的音高优势区域。在一组具有相同平均基频（组 A）的固定非重叠谐波（组 B）中，测量了检测基频变化（F0DLs）的阈值。假设当组 B 中的谐波落入优势区域时，F0DLs 将最小。组 B 中最低谐波的阶数 N 从 1 变化到 15。当所有分量的水平相同时，F0DLs 随 N 的增加而增加，但对于 F0 = 200 Hz，F0 = 50 或 100 Hz，增加开始的 N 值较低，这与优势区域对应于可分辨谐波的预期相反。当分量水平遵循等响轮廓时，对于 F0 = 50 Hz，F0DLs 对于 N = 1 最小，但整体性能比等水平分量差得多，这表明最低谐波掩盖了来自更高谐波的信息。
