background sound

基本解释

During a shoot, mic placement is optimized for dialog, and the quality of background sounds can suffer.
射擊時，麥尅風的擺位要照顧對白，就可能導致背景聲音的音質大打折釦。
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動機的空轉此類自然背景音，有時混郃型汽車的方曏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