acoustic bass

基本解釋

Microphones, bass guitars, and electric-acoustic instruments, also typically have low-level outputs.
麥克風(fēng)、電貝司（低音吉它）、和電子音響設(shè)備，特殊的也有低電平輸出。
shzhsky.blog.163.com
The line arrays of FIGS. 10A and 10B include bass acoustic drivers 52 mounted in the same cabinet as the line arrays.
圖10A和10B的線性陣列包括和線性陣列一樣安裝在同一箱體中的低音聲學(xué)驅(qū)動(dòng)器52。
Time after time, the strings build and build, sometimes soaring off into the ether, other times making way for a solitary bass line or acoustic rhythm.
弦樂一次又一次地加入其中，有時(shí)急速地升入太空，有時(shí)又讓路給人聲，自己甘愿作為低音聲部或者原聲節(jié)奏。

The acoustic bass is "probably just the most beautiful-sounding instrument, " the Philadelphian says.
NPR: Bassist Christian McBride, Plying the Bottom Groove
His latest album, The Toys of Men, functions as a career summary of sorts, with Clarke delivering a series of solo acoustic bass miniatures that reference past efforts while functioning with impressive restraint.
NPR: Stanley Clarke: A Lyrical Bass Player
We went from the original instrumentation of strings and a handful of winds to a rocking jazz rhythm section consisting of Hammond B3 organ, gospel piano, drums, electric guitar, Fender bass and acoustic bass, five saxophones, full brass, strings, timpani and percussion.
NPR: An Updated 'Messiah' from Marin Alsop