See:
- Paolo Debertolis, Maja Zivić: Archaeoacoustic analysis of Cybele’s temple, Imperial Roman Palace of Felix Romuliana, Serbia in: Journal of Anthropology and Archaeology , 2015 , Volume 3, Number 2, pp.1-19 - http://jaanet.info/journals/jaa/Vol_3_No_2_December_2015/1.pdf