Roberts B, Bailey P J
School of Psychology, University of Birmingham, England
J Exp Psychol Hum Percept Perform. 1996 Jun;22(3):604-14. doi: 10.1037//0096-1523.22.3.604.
When the regular spectral pattern formed by an odd-harmonic complex (the base) is disrupted by an added even harmonic, the added component is judged as more salient than its neighbors. This study considered whether the effects of spectral pattern on perceptual segregation are restricted to harmonic stimuli. Participants either rated the clarity or judged the relative pitch of a cued component in a series of complex tones. The difference in clarity between added and base components found for the harmonic complexes was not reduced when the complexes were made inharmonic either by a frequency shift or by spectral stretch or compression. However, the added-base difference could be abolished for an inharmonic complex when the distribution of components across frequency was made uniform. These findings suggest that spectral regularity is a factor distinct from harmonic relations in auditory grouping.
当由奇次谐波复合体（基音）形成的规则频谱模式被添加的偶次谐波扰乱时，添加的成分会被判定为比其相邻成分更显著。本研究探讨了频谱模式对知觉分离的影响是否仅限于谐波刺激。参与者对一系列复合音中提示成分的清晰度进行评分或判断其相对音高。当复合音通过频率偏移、频谱拉伸或压缩而变得不和谐时，谐波复合体中添加成分和基音成分之间的清晰度差异并未减小。然而，当成分在频率上的分布变得均匀时，不和谐复合音的添加成分与基音成分之间的差异可能会消失。这些发现表明，频谱规律性是听觉分组中与谐波关系不同的一个因素。
