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- At last, application of multiclass classifiers based on SVM in classification of noise signal is studied. 最后,将基于支持向量机的多类分类方法应用于舰船噪声信号分类。
- The white Gaussian noise was successfully separated from noise signal in low-field pulse NMR system and its parameters were estimated by using this method. 采用该方法从实际低场脉冲核磁共振系统噪声信号中分离出高斯白噪声并对其进行了参数估计。
- 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。
- Measuring and analyzing technology based on variable-time-interval Fourier transform was dealt with for vehicle accelerating noise signal. 摘要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。
- It is difficult to reduce the noise signal in the cab signal by normal filter because the frequency of it is similar to themodulate signal. 由于铁道机车信号中噪音信号频率与调频信号频率较为接近,使用普通滤波器很难在滤除噪音时尽可能少地影响有用信号。
- Two sensors on two sides of leaking point can magnify the received noise signal and send it wirlessly through transmitter to correlator's mainframe. 置于漏点两侧的两个传感器可放大接收到的漏水噪声信号,并通过发射机以无线电方式传送给相关仪主机。
- Because engine noise takes on complicated frequency characteristics, if original noise signal is not collected, the noise control effect will not be evident. 由于发动机噪声的频率成分比较复杂,如果采用主动降噪技术不能适时采集到源噪声信号,就达不到理想的降噪效果。
- And the results from two different apparatuses are basically in agre-ement, the noise signal generator has its superiority in the measurement of the stability of sensitivity. 并且由两种不同的仪器所得到的结果基本上是一致的。噪声信号发生器在灵敏度稳定性的测量中比标准信号发生器操作简单、方便,数据一致性好。
- The design and principle of a random number generator made by circuit noise signal was introduced, analyzing the randomness and security of its output sequence in cryptography. 摘要介绍一种利用电路内部噪声信号做成随机序列发生器的设计和工作原理,并对它输出序列进行密码学意义上的随机性和安全性分析。
- The flow rate is worked out on the operational analysis of the flow noise signal of fluid, the water cut can be measured according to the impendence of fluid. 流量是根据流体中的流动噪声信号进行相关运算来获取的,含水率是通过油水混相中的阻抗特性来获取,该传感器采用四电极结构。
- The former one demarcates the loads following the start of ball mill;the other samples noise signal periodically and calculate the loads based on the demarcation. 检测阶段对磨机噪声进行定期采样,根据标定来判断负荷,并将负荷信息实时显示及发送到上位机。
- The relationship between the noise signal after transformation and the original noise signal is discussed andcorrespondingly two lemmas are given and proved in this paper. 文中讨论了经过等效变换后的干扰信号与系统输出端原干扰信号的关系;相应地给出两个引理及其证明.
- This code is used to sum signals (eg. sinewave and noise signals) and produce an output signal. (译):此代码是用来总结信号(如正弦波和噪声信号) ,并产生一个输出信号。
- A new type of wavelet-Exponential Damping Wavelet is constructed to detect the knocking sound caused by mechanical faults in an engine, Experimental results show that by this wavelet effective features of those faults can be extracted from noise signal. 为了识别发动机噪声信号中表徵故障的间歇性撞击声,本文构造的一种新型的小波-指数衰减型小波函数,它能有效地识别出间歇性撞击声。
- Therefore,bispectrum is used to extract the non-gaussian ingredients from the noise signals of ships. 由此可利用信号双谱,提取舰船辐射噪声信号的非高斯成份。
- Twisted wire pairs in a cable are also more resistant to crosstalk or noise signals from adjacent wire pairs. 缆线中的双铰线对于来自邻近电线的串音或杂讯有较大的阻抗。
- The feedforward structure is investigated and the simulating results show that this method controls the primary noise signal perfectly whether the secondary path is variable or not. 就前馈控制结构加以研究,仿真结果表明,该方法不仅在次路径固定不变时,使噪声信号得到明显衰减,并且在次路径发生改变时,依然能很好地控制噪声。
- A loud noise from the street diverted my attention. 街上一阵喧闹声转移了我的注意力。
- A red light is usually a signal of danger. 红灯通常是危险的信号。
- Differential signals can help nullify the effects of ground shifts and induced noise signals that can appear as common mode voltages on a network. 差分信号有助于消除在网络中作为共模电压出现的接地偏移和感应噪声信号的影响。