background noise

1. The sound of sirens was an omnipresent background noise in New York
   在纽约，警报声是无处不在的背景噪音。
2. Enterprise-class tools provide these things, as well as a way to filter out the interesting information from the background noise.
   企业级的工具提供了这些功能，而且还提供了将有用信息和无关背景分离的筛选方法。
3. But if the signal strength at a particular frequency stands out sufficiently above the background noise, the system records it and saves it for future analysis.
   但是，当信号强度在某一特定频率的背景噪音中足够清晰的凸显出来时，系统将记录并保存这些数据供将来分析。
4. By analyzing the output spectra of former configurations, a problem was indicated, and an improved loop structure to eliminate the background noise was proposed.
   通过对文献中报道的环形腔结构光纤激光器输出的分析，指出了其存在的问题，并提出了减小其输出背景噪声的改进方案。
5. First, image pre-processing techniques such as morphological filtering and multi-frame difference were used to restrain most of the background noise.
   首先对采集到的各帧图像通过形态学滤波、帧差等预处理抑制大部分背景噪声。
6. There's a lot of background noise here; could you speak a little louder?
   这里的背景杂音太大了，可以请您讲大声一点吗？
7. Do you find it difficult to follow a conversation if there is background noise?
   你是否觉得在嘈杂的环境中难以进行交谈？
8. For example, in holographic imagery the speckle pattern corresponds to troublesome background noise.
   例如，在全息照相中，斑纹图样相当于讨厌的背景噪声。
9. The Research of Pulse Signal Processing Algorithm in Strong Background Noise
   强背景噪声下的脉搏信号处理算法研究
10. We couldn't hear what they were saying on the tape& there was too much background noise.
    我们听不出磁带上他们说的话&背景噪音太响了。
11. The background noise level of this instrument under the condition of conducted disturbance and disturbance power test is provided.
    讨论了监测待测物使用工况的必要性，给出了电流参量测试仪的传导骚扰和骚扰功率的背景骚扰电平。
12. Analysis of Underwater Optical PPM Channel Capacity Under Certain Background Noise
    一定背景噪声下的水下光PPM信道容量分析
13. "Where are you?" I asked him, trying to recognise the background noise.
    “你在哪儿？”我问他，并竭力辨别背景噪音。
14. This paper, from the view of sound absorption treatment, control of background noise and reflected sound, ect, analyses the possibility and condition of the compatibility of internal combustion engine running room with the room for determining noise power.
    从吸声处理、景噪声、射声控制等方面分析了内燃机试车室与噪声功率测试室兼容的可能性及条件。
15. In sports cars, the microphone is directed towards the driver because of the loud background noise.
    在跑车中，由于背景噪音较大，麦克风朝向驾驶员。
16. Research of Background Noise Extraction Based on Texture Feature
    基于纹理特征的背景噪声提取的应用研究
17. Each group then uses complex algorithms to analyze the signals that stood out above the background noise.
    每个团队都会对这些在背景噪音中脱颖而出的信号使用复杂的算法进行分析。
18. There is too much background noise for speech recognition to work well.
    背景杂音太多了，语音识别无法正常运行。
19. Detecting narrowband signal in intensive background noise is an important task in signal processing.
    检测淹没在强背景噪声中的窄带信号是信号处理中的一个重要问题。
20. In the detecting system of laser illumination and laser guide star ( LGS), the application of optical filter is an important approach to reduce background noise and improve signal-to-noise ratio ( SNR).
    在激光照明和激光导星的探测系统中，运用滤光器（片）是抑制背景噪声、提高信噪比的重要途径之一。
21. This newer configuration increases the path length and has been shown to reduce background noise.
    这一新的结构增加了路径长度，而且减少了背景噪音。
22. Effective wind protection significantly reduces the background noise of air currents.
    有效的风保护极大减少气流背景噪声。
23. 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。
24. This method firstly filters complicated background noise with a band_pass filter, then macks prediction in time domain and affirm alarm in frequency domain.
    该方法首先将背景噪声带通滤波，然后对信号时域预报警及频域报警确认。
25. The PA system automatically adjusts the volume to compensate for variations in background noise.
    公共场所扩音器自动调整音量，根据背景噪音的变化来做出选择。
26. Online monitoring of power system test signal contains a lot of background noise, not easy to detect.
    电力系统在线监测中的检测信号含有大量的背景噪声，不便于检测。
27. As a result, the headphones eliminate up to90 percent of extraneous background noise.
    因此，耳机消除高达百分之90的环境噪音。
28. His voice is soft against the background noise of undergraduates and retains the dark flavours of his native Hungary.
    在一片本科生的喧哗声中，他的声音听上去十分柔和，同时又保留着他老家匈牙利的阴郁味道。
29. It's all dictated by the level of background noise in their listening environment.
    这些设置都取决于他们收听环境中的背景噪音水平。
30. No clear pulse will be evident, and the transmission would be easily lost within the background noise.
    我们不会看到清晰的脉冲，而整个传输的信号也很可能被淹没在背景噪声中。

noun

1. extraneous noise contaminating sound measurements that cannot be separated from the desired signal

   Synonym:    ground noise