Brunstrom J M, Roberts B
School of Psychology, University of Birmingham, Edgbaston, England.
J Acoust Soc Am. 1998 Dec;104(6):3511-9. doi: 10.1121/1.423934.
The basis for the perceptual cohesion of periodic complex tones was investigated. In experiment 1, 2-4 consecutive components (harmonics 6 and above) were removed from a 14-harmonic complex and replaced with a sinusoidal "probe," located at one of a set of regularly spaced positions spanning the gap. On each trial, subjects heard a complex tone followed by an adjustable pure tone in a continuous loop. Subjects were better able to match the pure tone to the probe when the probe did not coincide with a harmonic position. Minima in "hit rate" were more pronounced when harmonic probes were in positions adjacent to other harmonics than when they were not. These findings suggest that the pitch of each in-tune partial was actively suppressed by a template whose influence attenuated with distance from regions of consecutive harmonics. In experiment 2, the partials on either side of the spectral gap were harmonics of different fundamental frequencies. Hit-rate minima corresponding to both fundamentals were found, indicating an upward and downward spread of suppression, and also demonstrating the concurrent operation of two templates. The results confirm recent findings in support of template models, and are consistent with the idea that partial-pitch suppression underpins harmonic fusion.
研究了周期性复合音调的感知连贯性基础。在实验1中，从一个14谐波复合音中去除2 - 4个连续成分（第6谐波及以上），并用一个正弦“探头”替代，该探头位于跨越间隙的一组规则间隔位置中的一个。在每次试验中，受试者以连续循环的方式先听到一个复合音，接着听到一个可调节的纯音。当探头与谐波位置不一致时，受试者能更好地将纯音与探头匹配。当谐波探头位于与其他谐波相邻的位置时，“命中率”的最小值比不相邻时更明显。这些发现表明，每个调谐分音的音高被一个模板积极抑制，该模板的影响随着与连续谐波区域距离的增加而减弱。在实验2中，频谱间隙两侧的分音是不同基频的谐波。发现了对应于两个基频的命中率最小值，表明抑制作用向上和向下扩展，同时也证明了两个模板的并行运作。这些结果证实了最近支持模板模型的研究发现，并与分音音高抑制是谐波融合基础的观点一致。
