noise peak
英 [nɔɪz piːk]
美 [nɔɪz piːk]
n. 噪声峰
双语例句
- The spectrum level of microseismic noise tends to peak at about 1/ 6 Hz.
微震的噪声谱在1／6赫趋于峰值。 - The proposed method can eliminate the noise effectively and provide the improved Peak Signal Noise Ratio ( PSNR) over wavelet and contourlet transform.
实验证明此方法能更有效地消除图像噪声并得到比小波和轮廓波变换更高的PSNR。 - Preprocessing consists of data selection, baseline adjustment, noise filtering and peak identification. Data selection removes preprimer data section which contains little useful information.
预处理包括数据段选取、基线调整、噪声滤除、峰值识别四个模块：数据段选取删除前段冗余数据； - The results show that the harmonic velocity noise is band-passing in frequency spectral space with a peak frequency and the band width is determined by Γ.
结果表明：在频谱空间中简谐速度噪声是一种带通噪声，存在一个峰值频率，且噪声带宽由参量Γ控制。 - It's found that the inlet noise frequency spectrum has two obvious peak values at low frequency according to the test and analysis of the inlet noise.
通过对该空压机的噪声测量分析，发现进气噪声信号的频谱呈现两个明显的低频峰值。 - The BP ANN is applied in extracting weak signal and information of oscillographic chronopotentiometric signals from strong noise background. Effects of noise and peak width of signal are studied.
将BP神经网络用于从强噪声背景中提取微弱信号并用于含较强噪音的示波计时电位信号的有用信息提取，研究了信号峰峰宽和噪音含量对提取结果的影响。 - It is based on the assumption that analytical signals differ from random noise in the chromatographic peak width. The information of the molecular ion or pseudo-molecular ion about the analytes can be obtained.
根据分析信号与随机噪声的质量色谱峰宽度不同，通过滤除质谱中的随机噪声，较为准确地得到化合物分子离子或准分子离子的信息，可显著地改善定性分析的准确性。 - In this paper an experimental investigation was carried out, and it is proved: no matter whether tip vortex cavitation is visible, narrow band noise peak is connected with the flow near the tip of propeller.
本文用实验证实这种窄带噪声峰与桨叶梢部流动有关，无论梢涡空泡可见与否，都可能出现。 - In this paper, the digital-signal processing approaches for macro-instabilities were analyzed and the combined approach of power spectral density and wavelet analysis was proved to be suitable for analyzing one-dimensional low-frequency signal with noise and peak value.
本文首先分析比较了研究宏观不稳定的实验数据时，所用到的数字信号处理方法，研究表明功率谱估计与小波分析组合法可更有效地分析含有噪声的一维低频信号的频率值和峰值。 - Based on the Laplacian distribution model of AC DCT coefficients, we deduce theoretical relationship between the scaling parameter in a typical watermarking algorithms and signal to noise ratio ( SNR) or peak signal to noise ratio ( PSNR) of watermarked images.
根据DCT交流系数的拉普拉斯分布模型，推导了DCT域典型水印算法中拉伸系数与信噪比和峰值信噪比之间的理论关系。 - In this process, problems of reducing the noise of the displacement signal and spotting precisely its peak point were solved; and nonlinear parameter identification was changed into piecewise linear identification of parameters.
在此过程中，解决了位移时域信号的降噪和峰值点的精确确定问题，将非线性参数识别转化为分段线性的参数识别。 - We point out that it is not always true that the maximum crosstalk delay change occurs in the time corresponding to the crosstalk noise peak, and the crosstalk noise can't be seen as a mirror image of the delay change curve ( DCC).
深入探讨了串扰延迟变化曲线和串扰噪声的关系，指出两者并不存在镜像关系，最大串扰延迟变化并不一定对应于串扰噪声尖峰值； - It was indicated that this method could significantly improve the signal-to-noise ratio ( SNR) and efficiently filter the noise peaks, while the peak position and height remained unchanged.
仿真信号和冬虫夏草的毛细管电泳信号滤噪结果表明，该法在保持峰位与峰高不变的情况下可显著提高信噪比，有效滤除噪声峰。 - Simulation results for the structural acoustical coupling in enclosed space show that the structure-brone noise can be reduced effectively in assigned frequency band, the maximum control value for noise peak value is near 20 dB ( A).
封闭空间结构振动声耦合反馈力控制仿真结果表明：通过合理选择性能加权函数，噪声可以在指定频带得到良好的控制，最大噪声峰值近20dB（A）。 - The Accuracy Analysis of Electrical Noise Peak-to-Peak Measurement
电噪声峰值测量法的精确度分析 - A method is proposed to extract non-overlapping background noise. First, a roughly estimation of noise is used in WF function to obtain correlation peak.
提出一种非重叠背景噪声的提取方法，首先将对噪声的粗略估计代入维纳滤波函数，得到相关峰。 - Reduction of random noise for seismic data by time-frequency peak filtering
用时频峰值滤波方法消减地震勘探资料中随机噪声的初步研究 - Compared with other joint power spectrum processing method such as slide window local median threshold method, the correlator using this technique has better performance in terms of output peak to noise ratio, peak intensity and discriminate rate.
这种相关器同采用局部中值阈值技术的二值化联合变换相关器相比，能提高输出峰边比，提高相关峰的强度。 - The four factors that influence distribution noise are: pressure pulsation, cavitation, the peak value of pressure gradient in the process of pre-compression or pre-decompression in the piston oil tank and the flow pulsation of the pump.
影响轴向柱塞泵配流噪声的主要因素是：压力冲击、气蚀、柱塞油缸中油液配流过程中的压力梯度峰值和轴向柱塞泵的瞬时流量脉动。 - Results show that, by adding damping layer, the brake noise in the frequency distribution, noise probability and measured peak values have been reduced at different levels, so the tests verified that damping noise reduction method can reduce the noise generated probability.
结果显示，在添加阻尼层后，制动器噪声不管是在分布的频率、产生噪声的概率还是测得的峰值声压级都有不同程度的降低，试验再次验证了阻尼降噪方法可以降低噪声的产生概率。 - Electrochemical noise tests illustrate that the current changes in the peak width can be effective response to the efficiency of inorganic corrosion inhibitors, which is not an accurate evaluation of TEPA on the inhibition ability of pitting corrosion process.
电化学噪声测试中，电流峰宽变化能有效反应无机缓蚀剂的缓蚀效率，但是电流峰宽变化不能准确评价有机缓蚀剂四乙烯五胺对点蚀过程的缓蚀能力。 - Given the extensive application of FPGA technology and the pseudo-random sequence has the similar correlation of white noise, the measurement process of the interference, noise has little effect on the correlation peak.
鉴于FPGA技术的广泛应用和伪随机序列具有与白噪声相近的相关特性，测量过程中的干扰、噪声对相关峰值影响很小。 - This system uses improved MUSIC algorithm. We get the data covariance matrix decomposition by making use power iterations method based on contractive mapping. And then getting noise sub-space matrix, searching spectral peak, realizing the distance and the azimuth positioning at last.
该系统采用改进的MUSIC算法，利用基于压缩映射的幂迭代算法来进行特征分解得到噪声子空间矩阵，然后进行谱峰搜索，实现对声源距离和方位角的定位。 - This peak detection circuit is mainly designed to achieve the shielding of noise and other weak signal, the peak holding and the peak-time discrimination.
本文设计的峰值检测电路主要完成对噪声等弱信号的屏蔽、峰值信号的保持以及峰位甄别。 - Modulation signals have peak value at zero frequency section, and the noise was no significant peak in the section, we can use this characteristic to distinguish the noise and modulation signal. By calculating the ratio of maximum and average signal to determine whether exist signals.
该算法根据调制信号在零频率的循环谱截面存在峰值，而噪声在该截面无明显峰值这一特点来区分噪声和信号，通过计算该截面的最大值与均值的比例来判断是否为信号。 - Then the noise interference with the peak considered, a new method called generalized cross correlation method is proposed to calculate the pulse velocity.
然后针对峰值受到噪声影响时出现误差的情况，提出了一种新的方法，即广义互相关法进行脉搏波速的计算。 - Besides, we use interpolated Doppler compensation algorithm to compensate the Doppler frequency sidelobe for Barker code and M sequence with different signal to noise ratio. Then we calculate the peak sidelobe level and sidelobe level points.
然后介绍了二相编码信号的多普勒补偿技术，接着用内插多普勒补偿算法对不同信噪比的巴克码，M序列的多普勒频移给予补偿，以及计算峰值旁瓣电平和积分旁瓣电平。 - The experimental results show that the increasing of low-frequency noise and the voltage peak-peak random is the main failure mode.
针对本文研究对象，实验结果表明，低频噪声增大及电压峰-峰值随机增加是其主要失效模式。