Fig. 6
From: A “set” of ancient bronze bells excavated in Changsha, Hunan Province, China
Top: frequency analysis of the A-tone of bell no. IX of the ten Shiguzhai bells (accession no. of the Changsha Museum, 1632.6), conducted via the Audacity software. The first and major peak is interpreted as its fundamental tone. Bottom: B-tone of bell no. IX
