background noise

基本解释

The impact is going to be most clearly noted when the background-noise level goes up, when you have to focus on what someone is saying.
这种听力丧失的影响在背景噪音水平上升时表现的最明显，此时你不得不集中注意力才能听清楚某人的讲话。
The paper discusses the importance of background-noise's level of decimeter wave-band on antenna and its basical technical condition and request.
论述了分米波段天线背景噪声电平测量的重要作用、基本条件和要求。介绍了其测量系统灵敏度的估值方法，及在工程上用定标的技术参数计算灵敏度的公式。
Compared with AR spectrum, the influence of disturbed background-noise is reduced, and the clustering character of target feature is improved, which is proved.
仿真结果证明：基于高阶谱特征提取方法优于AR功率谱特征，该方法在抑制背景干扰中具有优越性。

And the fact that we're always facing some risk of death recedes into the background in the way that most of us don't hear background noise-- that what jumping out of an airplane does for you is it spikes the risk of death.
我们一直面对的某些死亡的风险,这种情况下变成了背景声音,因为我们大部分人都听不到背景的噪声-,而跳下飞机带给你的,是死亡的风险上升。
耶鲁公开课 - 死亡课程节选

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Customers can also stay in touch via video chat, while enjoying excellent voice quality with reduced background noise through the built-in digital microphone.
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背景噪声
A method of high-pass filtering is proposed to reduce the background noise of the reconstruction.
提出用数字高通滤波器来减少重建图像的背景噪声。
背景噪音
本底噪声
背景躁声
背景杂讯
后台干扰

背景噪声
Then the sum of voice matrix that can be adapted to different background noise circumstance was got.
在背景噪声变化的环境下，该方法将语音映射到一个基于心理声学模型的语音矩阵中，通过跟踪噪声，得到的语音矩阵和参数能够适应不同的背景噪声环境。
本底噪声
The experimental results show that, the introducing of adaptive line enhancer can decrease the system background noise by 13dB.
实验表明,自适应谱线增强器模块对系统本底噪声有很好的抑制作用,与未采用该模块相比,减少了13dB。
背景杂讯