Fig. 4: Historical periods of emotion-related adjectives when describing music in AE, BE, and SC books from 1960 to 2000.
From: How have music emotions been described in Google books? Historical trends and corpus differences
a The adjusted frequencies of positive and negative adjectives when describing music from 1960 to 2000 (3-year smoothing). AE indicates American English, BE indicates British English, SC indicates Simplified Chinese, POS indicates positive adjectives, and NEG indicates negative adjectives. b and c are the adjusted frequencies of the top five positive and negative adjectives when describing music in AE books. d and e are the results of BE books, and f and g are the results of SC books (loess smoothing). Source: Own elaboration.
