Abstract
The effect of onset and offset on the subjective congruence between telop and sound effects was examined by rating experiments. The synchronization of onsets was the dominant factor to create subjective congruence by the synchronization between sound and moving picture. When the on sets of sound and moving picture were synchronized and their offsets were not synchronized, the subjective congruence was as high as when both the onsets and offsets were synchronized. The effect of changing pattern between visual brightness and auditory loudness tended to be dominant at the latter half of the telop pattern. When the changing pattern between brightness and loudness in the former half and did not in the latter half, the subjective congruence was lower than when changing pattern between brightness and loudness corresponded throughout the telop pattern.
