Acoustic archaeology

Acoustic archaeology is an emerging field that melds acoustical analysis and old-fashioned bone-hunting. Ancient people created fun house-like temples that featured scary sound effects. More http://news.discovery.com/archaeology/acoustic-archaeology-chavin-mayan.html

http://news.discovery.com/archaeology/conch-ancient-trumpet-sounds.html
and also "Scientists analyze tunes from 3,000-year-old conch-shell instruments for insight into pre-Inca civilization"
http://www.sciencenews.org/view/generic/id/65784/title/Ancient_trumpets_played_eerie_notes