順応水準の移動に伴う知覚的対比としてのピッチ・シフト

概要

論文の詳細を見る
Pitch shifts commonly have been measured by binaural matching. From preliminary observations, however, we found that this phenomenon occurred under the condition of monaural successive comparison. We conducted some experiments to inspect this phenomenon quantitatively. In every experiment, we found the shift of PSE (Point of Subjective Equality) away from the frequency of the leading tone. The most remarkable shifts of pitch were found with the leading tone that have the frequency slightly upper or lower than that of standard tone. This tendency is in line with the results obtained by Sakai (1991) which treated the anchoring effect on judgments of tone height. We found that the greatest shift of pitch was caused at 750ms inter stimulus interval (ISI), and that the effect became weaker with increasing ISI. Therefore we think that pitch shift is an example of the perceptual contrast involving shift of adaptation level as observed in many other perceptual modalities
日本基礎心理学会の論文
1996-03-31