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In order to make use of time-frequency characteristic of signal,a new method of variational estimation on signal frequency by using AR model power spectrum estimation,designing band-pass filter to gain approximatively source signals and underdetermined mixed matrix,and constructing completed observation signals by expanded subspace primer vector is proposed.

充分利用信号的时频特性，提出了AR模型功率谱估计法滑动估计信号频率，设计带通滤波器近似获取源信号和欠定混合矩阵，以及扩展子空间向量基构造完备观测信号的方法，将问题转化为完备情况下的盲分离，最后运用FastICA方法实现了信号盲分离。

It can separate sync signals from NTSC, PAL and SECAM video signals, and produces composite sync output signal, back porch output signal, horizontal sync signal, vertical sync signal and odd/ even field output signal.

它可以对NTSC、AL、ECAM 制式的视频信号进行同步分离，获得所需的同步信号，还能准确地输出复合同步、沿输出、同步、同步和奇/场输出信号。

By generating all essential clock signals for MPEG playback, and converting digital video inputs to either NTSC or PAL video signals, the SP232EEN-L is an essential component of any low-cost solution for video-CD playback machines.

通过产生所有必要的MPEG播放时钟信号，并转换为数字视频输入或NTSC或PAL视频信号，SP232EEN - L是一个任何视频光盘播放机的低成本解决方案的重要组成部分。

First use of sensors to convert the weight of voltage signal, and then voltage signal amplification input A / D converter, followed by A / D converter tool analog signals into digital signals, the digital signal will be sent to the microcontroller, through the process of Signal processing, and weighing function, and then the weight and keyboard input price multiply calculated lump sum, and the weight and price with LCD display.

首先用传感器把重量转换成电压信号，再将电压信号放大输入A/D转换，利用A/D转换工具将模拟信号转化为数字信号，将得到的数字信号传送至单片机，通过程序对信号进行处理，实现称重功能，然后将重量与键盘输入单价相乘计算出总价，并将重量和价格用LCD显示出来。

Dual waveband signals in high power laser welding were recorded and analyzed, especially, the law between the signals magnitude and the defocusing was discussed.

记录和分析了高功率激光焊接中工作区的紫外和红外信号，着重分析了双波段信号与离焦量变化的对应规律。

This paper systematically researched this sort of nonuniformly sampled signals'digital spectrum structure, signal-to-noise ratio , the response of D/A converter with nonuniformly sampled signals, the algorithm for estimating timing offsets, the relationship between the discrete time expression of the total energy and the continuous time expression, the estimation of the average power, the algorithm of recovery and application in designing and analyzing the digital waveform synthesizer.

本文全面系统地研究了这类周期性非均匀采样信号的数字谱结构，信噪比表达式，数模转换器对非均匀采样信号输入的响应，误差校正算法，时域与频域的能量对应关系，对功率测量的影响，内插恢复算法，以及在设计和分析数字波形合成器中的应用。

Since nerve cells use electrical signals, and magnetic fields can induce and disrupt such signals, a strong, well-aimed magnetic stimulation can affect the brain's operation.

自从神经元细胞用了电子信号，磁场就能产生或中断这样的信号，一个强的，很好的瞄准磁刺激能影响大脑的工作。

Magnetic stimulation, also holds out the promise ofenhancement. Since nerve cells use electrical signals, and magneticfields can induce and disrupt such signals, a strong, well-aimed

自从神经元细胞用了电子信号，磁场就能产生或中断这样的信号，一个强的，很好的瞄准磁刺激能影响大脑的工作。

The remote control and data acquisition system of GST-1 three-axis turntable is designed and manufactured. It can not only control all the work states of the turntable, but acquisite 6 channels digital signals and 6 channels analog signals as well. The system is powerful and has high accuracy of data acquisition. It is the important guarantee to realize automatical test of intertial sensor and system.

设计和参与研制了GST-1型三轴转台计算机远控及数据采集系统，并进行了实际调试，该系统不仅可以程序控制转台的所有工作状态，而且能够同时采集被测对象的六路数字信号和六路模拟信号，功能强大，数据采集精度高，是实现惯性仪表和惯性系统自动化测试的重要保障。

Implement shunt-wound control of the two elevators is realized by following methods: sending the calling signals and phreatic signals to PLC and through the centralized disposal of the control program and shunt-wound attempter program, and then giving on-of control signal to gating system, transducer and all kinds of displays at appropriate time.

将2台电梯的呼梯信号、井道信号全送至PLC，经PLC内的控制程序与并联调度程序集中处理后向门机系统、变频器和各类显示器适时地发出开关量控制信号，由此对两台电梯实施并联控制。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。