background sound

基本解釋

During a shoot, mic placement is optimized for dialog, and the quality of background sounds can suffer.
射擊時，麥克風的擺位要照顧對白，就可能導致背景聲音的音質(zhì)大打折扣。
When natural background sounds, like the engine tickover of a parked car, were added, the hybrids’ direction sometimes could not be detected until they were perilously close.
如果添加諸如停車時發(fā)動機的空轉(zhuǎn)此類自然背景音，有時混合型汽車的方向在危險距離之前根本無從判斷。
Now listen to the background sounds, feel the fabric of your clothes, feel the weight of your seat on the chair, your feet on the floor; use your senses.
現(xiàn)在運用你的感官：聽聽周圍的聲音，感覺你衣服的紋理，感受你對椅子施加的壓力，還有你放在地板上的雙腳。

The sounds would need to be detectable under a wide range of street noises and other ambient background sounds when the vehicle is traveling under 18 miles per hour.
ENGADGET: NHTSA details new sound requirements for hybrids and EVs travelling under 18 mph
When I travel I have Classic FM streaming in the background and it sounds fine.
FORBES: In Praise Of...The Netbook?
During signed dialogue we hear nothing but a trickling fountain in the background, or the sounds of distant crowds.
NEWYORKER: Seen but Not Heard