background noise level

基本解釋

Conventional methods cannot work well in the condition of low SNR or at a variable background noise level.
常規(guī)的檢測算法在低信噪比尤其在背景噪聲能量可變的環(huán)境下不能有效工作。
The distance between the acoustic-emission source and the receiving transducer, and the background noise level are primary factors in selecting a particular frequency band.
聲發(fā)射源與接收訊號傳感器間的距離以及環(huán)境噪聲的電平是選擇頻帶的主要依據。
A major cause of errors in speech recognition is the inaccurate detection of word bound-ary. Conventional methods can not work well in the condition of low SNR and variable background noise level.
詞邊界檢測誤差是語音識別中產生錯誤的主要原因之一，常規(guī)的檢測算法在低信噪比尤其在背景噪聲能量可變的環(huán)境下不能有效工作。

In the US, that level of coverage starts to become background noise.
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