When the observed seismic data have noise background, these methods are effective.
在处理存在干扰背景的地震观测资料时是有效的。
In this thesis the Morse telegraph code detection and recognition in noise background is investigated.
本论文研究的是噪声背景下的莫尔斯信号的检测和识别技术。
Besides, with smaller noise background, neuron itself is still able to normally work due to its anti-noise property.
此外，神经元本身也具有一定的抗噪性，这使得神经元在较小噪声背景下仍能正常工作。
So lip-reading is a good choice to overcome the disadvantage of audio-recognition system under the noise background.
所以要克服语音识别系统的弱点，利用唇语是一个不错的解决方法。
The test results indicate that the system has a very low noise background and can satisfy the most test requirements.
测试结果表明，该系统具有很低的噪声底部，可满足绝大部分测试需要。
A method on weak signal detection in a stronger noise background based on high-order statistics is presented in this paper.
提出了一种利用高阶统计量对强噪声背景下的弱信号进行检测的方法。
Self adaptive predictor is used to extract periodic signals with unknown frequencies from wide band random noise background.
自适应预估器能用来提取宽带随机噪声背景中未知频率的周期性信号。
Based on the local correlation principle, a practical method was put forth to separate chaotic signal from noise background.
基于局部相关原理，提出了一种可以有效实现混沌信号和噪声分离的方法。
Then proposes a method to detect the arrival time of instantaneous signal and the frequency composition under strong noise background.
提出了在强噪声背景下检测瞬时信号的到达时间和频率成分的方法。
The harmonic retrieval is classified according to the different noise background, in additive noises and multiplicative additive noises.
根据噪声背景的不同，谐波恢复可以分为加性噪声背景和乘性混合噪声背景下的谐波恢复。
An algorithm based on the local direction of fingerprint is proposed to improve the quality of the fingerprint image in noise background.
针对指纹图像中的噪声干扰，提出一种基于指纹局部方向的指纹图像增强算法。
By means of the principle of correlation analysis, this paper introduces an approximate method for estimating signal-to-noise ratio on random noise background.
本文利用相关分析的原理，提出一种在随机噪音的背景上估算信噪比的近似方法。
The parameter estimation of sine-wave flooded in strong noise background is an important and practical technique, and it is the base theory of spectrum analysis estimation.
估计淹没在噪声中的正弦波参量是具有实际应用价值和普遍意义的技术之一，也是测试所有谱估计性能的基础。
A new method based on Time Frequency Analysis (TFA) for detecting weak signal under strong noise background from radar target with the cavity embedded is described in this paper.
该文论述了在强噪声背景下利用时频分析检测带腔体雷达目标弱信号的方法。
Concerning the detection of weak signal in stronger noise background, a novel method was proposed in terms of stochastic resonance processing and by using the better de-noise feature of wavelet.
针对强噪声背景中的弱信号检测问题，在经典随机共振处理方法的基础上，利用小波良好的去噪特点，提出了随机共振加小波去噪检测弱信号的新方法。
TV target tracing system has following features: real-time, image indistinctness on the ground of dynamic tracing and external environmental distortion, high noise background intensity and so on.
电视目标跟踪系统实时性强，由于是动态跟踪和外界环境干扰，所以导致图像不清晰、背景噪声较强。
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。
There was a scuffling noise in the background, which turned out to be mice.
背景中有窸窸窣窣的噪声，原来是有老鼠。
Background noise in the classroom becomes a major distraction, which can affect their ability to concentrate.
教室里的背景噪音成为主要的干扰因素，这会影响他们集中注意力的能力。
The background noise of our lives was gunfire and horses' hoofs from "Wagon Train" or "Cheyenne”, and laughter from "I Love Lucy" or "Mister Ed”.
我们生活的背景噪音是“马车队”或“夏延”的枪声和马蹄声，以及“我爱露西”或“艾德先生”的笑声。
Children experiencing an auditory function deficit can often find speech and communication very difficult to isolate and process when set against high levels of background noise.
在面对高强度的背景噪音时，患有听觉功能损伤的儿童往往很难把语言分离出来进行处理，也很难进行沟通。
Each recording had a series of rhyming words that the volunteers had to identify for different levels of background noise.
每段录音都有一系列押韵的单词，志愿者们必须在不同程度的背景噪声下识别这些单词。
We are much more able to "tune out" chronic background noise, even if it is quite loud, than to work under circumstances with unexpected intrusions of noise.
我们更容易忽略长期存在的背景噪音，即使它非常大声，而不是在有意想不到的噪音干扰的情况下工作。
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