Measuring and analyzing technology based on variable-time-interval Fourier transform was dealt with for vehicle accelerating noise signal. 提出了基于变时基短时傅里叶变换来分析和处理时变信号的技术。
Low Noise Signal Process System for Solar X-ray Imaging Camera 太阳X射线成像望远镜低噪声信号采集系统
Extraction and Analysis of Noise Signal Generated by High-pressure Water Jets Impacting Target Based on Matlab 基于Matlab的水射流冲击靶体声音信号提取与分析研究
The paper introduces a system of noise signal supervision and analysis based on a common sound card in a computer. 介绍了借助于计算机普通的声卡对环境噪声进行监测和分析的系统。
The Separation of Ship Noise Signal Based on Second Order Nonstationary Statistic 基于二阶非平稳统计量的船舶噪声信号的盲分离
Ensure that the wiring of the white noise signal is changed under the shield of the test analogue port, otherwise it might lead to boosting or loss of field. 确保白噪声信号的布线测试模仿端口的屏蔽下的改动,否则能够会招致以提高或范畴的损失。
According to the portable spectral signal and noise signal, the method of wavelet transformation is introduced to eliminate noise signal. 针对便携式光谱仪的光谱信号与噪声的特点,研究了小波变换去噪的方法。
The coherent-noise jamming signal has the same structure with the radar transmit signal and the same jamming ability with noise signal. 相参噪声干扰信号具备与雷达发射信号相同的信号结构,以及与噪声信号相同的连续密集覆盖能力。
By predicting the noise in the loop the delay of noise signal in digital feedback loop is compensated effectively, thus the control capability of the system on disturbance is enhanced. 通过在回路中对噪声进行预测,有效地补偿了数字反馈回路造成的噪声信号的延迟,从而改善了系统的扰动控制性能。
The rub-impact, background and noise signal can be separated efficiently and the fault feature of vibration signal of a rotor system with local rub-impact fault can be extracted after the signal was decomposed by EMD. 采用EMD方法对转子振动信号进行分解,实现碰摩、背景和噪声信号分离,从而提取转子系统局部碰摩振动信号的故障特征。
Using the acoustic noise signal generated by driving motor vehicles to vehicle classification is a new and promising method. 利用车辆行驶过程中所产生的声频噪声信号进行车型分类是一种新方法,有较大应用前景。
Then a further investigation is done about the effect of the noise signal on the results of the presented method and the wavelet transform. 另外,还分析了噪声信号对该方法与小波变换方法所得结果的影响。
Application of Wavelet Analysis in Noise Signal of Compressor 小波分析在压缩机噪声信号去除趋势项处理中的应用
Singular value is extracted as to feature of cylinder explosive noise signal from Cover Matrix with singular value theory. 利用奇异值理论提取包含矩阵的奇异值作为气缸爆发噪声信号的特征。
The frequency spectrum features of chaotic signal and noise signal are analyzed, and the influence of wavelet transform on these two signals is discussed. 通过分析混沌信号和噪声信号的频谱特性以及小波变换对两种信号的作用结果的差异,论证了小波变换是一种有效的去除混沌信号中噪声成分的方法。
The sound intensity measurement is carried out for the exterior radiation noise of an automobile and by means of spectrum and correlation analysis of noise signal, an investigation into the application of sound intensity measurement to vehicle noise control is presented. 通过对汽车的车外辐射噪声进行了声强测试并对噪声信号进行频谱分析和相干分析,研究了声强测量系统在汽车噪声控制中的应用问题;
Order Domain Analysis and DSP Design on Vibration& Noise Signal 振动、噪声信号的阶比分析与DSP实现
Chaotic signal with continuous wide band frequency spectrum is not periodic and is similar with noise signal. 由于混饨信号的非周期,连续宽带频谱,似噪声等特点,特别适用于保密通信领域。
Therefore by earnestly studying in the wavelet analysis method, in view of the airborne target noise signal, the article adopts the wavelet soft threshold value to eliminate noises, obtains the satisfying effect. 因此本文在认真研究了小波分析方法的基础上,针对空中目标噪声信号,采取小波软阈值去噪方法,取得令人满意的效果。
This filter may eliminate the noise signal, and improve the mill stretch curve accuracy. 应用该滤波器可滤掉轧辊偏心造成的轧制力波动,提高了实测轧机弹性曲线的精度。
In this Paper, by using random system theory, we analyse various disturbances in weighing Process of dynamic track scale. A noise signal model is established, and it is verified by using computer simulation. 应用随机系统理论深入分析了微机轨道衡动态称重过程中的各种干扰作用,建立了它们的信号模型,并用计算机仿真论证了模型的正确性。
The system may be used to do real-time signal test and analysis of vibration and noise signal and modal analysis of structures. And the system has widespread applicability, good extended function, treatment ability and cost performance. 该系统具有对给定结构进行振动噪声等信号的实时信号测试分析和进行实验模态分析等功能,具有广泛的适用性和良好的及时扩充功能、处理能力和性能价格比。
The Design Method for Giant Magnetostrictive Transducers of Noise signal Source 噪声信号源超磁致伸缩换能器设计方法研究
Annex B introduce a voice activity decision ( VAD) algorithm which class speech signal as voice signal and background noise signal. AnnexB提出了一种静音压缩算法(VAD),它将语音信号分为话音信号和背景噪声信号。
Fault Analysis of the Rotor's Friction Based on Wavelet Decomposition of Noise Signal 基于声信号小波分解的转子碰磨故障特征分析
The measuring system of PSD with alternating light source can effectively eliminate the interference caused by light noise signal. 本文介绍的交变调制光源及其相应的PSD光电信号处理电路,可大大地降低和消除杂散光对测量的影响。
In this paper, we proposed an orthogonal method for noise signal elimination in standard 12-leads ECG. 介绍了一种在标准12导联心电图中消除噪声信号的正交化方法。
According to gear sifting's vibration and noise spectrum, using inverted frequency spectrum analysis technology of vibration noise signal to have the method of rejecting echo and synthetic analyzed actual measured signal, provided the base for gear shifting box fault of air press. 根据空压机齿轮变速箱振动和噪声谱,应用振动、噪声信号的倒频分析技术给出了剔除反射回声方法,并综合分析了实测信号,为空压机齿轮变速箱故障分析提供了依据。
In this paper, the structure of electrocardiogram system is perented which is based on personal computer and the hard design of this system. The kernel technique such as design process of EPLD and the technique of filtering noise signal are mainly discussed. 文中讨论了基于PC机的心电图机的系统构成,完成了心电系统在PC机中的硬件设计与实现,着重叙述了EPLD的设计过程和滤除系统噪声干扰的方法等技术核心。
If the exciting source is a white noise signal, voiceless sound will be sent out; 若激励源是一白噪声信号,则声道发清音;