Acoustic是什麼意思，聲音比較清晰？

Acoustics---n, is the scientific study of sound in the qualities of a place, esp. a hall,eg:-The Sydney Opera Hall, which make it good, bad etc., for hearing music, syphony orchestra and speeches.
eg:-The acoustics of the Sydney Opera Hall are so good that (Kong -Long-Dong-Dong-Dong;;   Bell Ding-Dong Ding-Dong;; Noise loud Din Din Dong ;;  Con Con. unpleasant Dong.) can hear everything even from the cheapest poor fare seat.

acoustic 是物理性發音，例如敲擊，吹氣，彈弦，不用電子電氣發音，是第二次答你