查询词典 digital

Abstraction :This paper analyzes the principle of Butterworth digital filter,discuss bilinear transformation method of filter design;record a piece of voice by Microsoft voice recorders, carry on its a time-domain analysis, spectral analysis;then design a specified Butterworth band-stop filter based on the theory of bilinear transform,analyze the filter by the tool named Fvtool;and filter the voice signal acquired by voice recorder.finally compare its characteristics of frequency domain and time domain,study the applications of Butterworth filter in digital signal processing ,in particular in signal denoising.

本文分析了巴特沃思数字滤波器的原理，探讨了双线性变换法设计滤波器的方法；用微软录音机采集一段语音，对其进行了时域分析，频谱分析；然后使用双线性变换法设计了一个的巴特沃思带阻滤波器，并且使用fvtool对设计的滤波器进行分析；然后利用该滤波器对采集的语音信号进行滤波。最后对比滤波前后的语音信号的时域和频域特性，研究了巴特沃思滤波器在信号处理尤其是信号滤波去噪方面的特性和应用。

To develop an effective digital media protection method,an algorithm for digital video watermarking is proposed based on binary operation in 3D wavelet transform domain.

为了寻求有效的数字媒体保护方法，该文提出了一种在三维小波变换域内基于二值运算的数字视频水印嵌入算法。

To develop an effective digital media protection method, an algorithm for digital video watermarking is proposed based on binary operation in 3D wavelet transform domain.

摘要为了寻求有效的数字媒体保护方法，该文提出了一种在三维小波变换域内基于二值运算的数字视频水印嵌入算法。

Digital Mobile TV targeted customer groups, the first of the MTR, busload of passengers; Second, there is a taxi 1 Advertising huge potential : digital mobile television from conventional television's "blind spots" uncovered a huge audience, Advertising is the potential implication of lies.

数字移动电视的目标客户群体，首先是地铁、公交车上的乘客；其次就是出租车、1广告潜力巨大：数字移动电视从传统电视的"盲区"中挖出一个庞大的受众群体，是广告潜力蕴涵的根本所在。

C do a good job mapping propaganda and public opinion guidance, and continue to promote awareness of the national territory education as an important content of patriotic education, strengthening the whole community mapping work and the "digital Wenzhou" building awareness of the importance to create a "digital Wenzhou" building a good atmosphere.

做好测绘宣传和舆论引导工作，继续把国家版图意识宣传教育作为爱国主义教育的重要内容，加强全社会对测绘工作和"数字温州"建设重要性的认识，营造"数字温州"建设的良好氛围。

This paper states the first opened digital railway division communication system which is constructed with ΔM multiplex transmission system and digital division telephone switching system on the toll symetrical cable at Zhengzhou-Luoyang Railway Division.

本文介绍了在郑州—洛阳区段的长途对称电缆上开通的我国铁路第一个数字式区段通信系统，它由△M多路复用传输系统和数字式区段电话交换系统构成。

The bending radius during installation: For non-armored digital signal cable for railway with plastic sheath, composite sheath and Al sheath, the bending radius is not less than 10 times of outer diameter of cable; For armored cable, the bending radius is not less than 15 times of its outer diameter; For railway inner digital signal cable, the bending radius is not less than 20 times of its outer diameter.

2.4敷设时的弯曲半径：塑料护套、综合护套、铝护套铁路数字信号电缆非铠装电缆应不小于电缆外径的10倍；铠装电缆应不小于电缆外径的15倍；内屏蔽铁路数字信号电缆应不小于电缆外径的20倍

Besides, this research reveals the power of bundling between digital and paper publishing could remove the possible damage of cannibalization. At last, we propose empirical digital publishing strategies of to the new entrants and the incumbents.

同时，本研究发现纸版与网路数位版的绑售威力，可避免新旧产品线之间的掠夺效果；并在实务意涵上，对新进的数位出版厂商，或既存的传统出版商，提出数位发行的行销策略。

A 12 centime diameter (around 4 3/4 inches) disk containing digital audio or digital computer information, which can be played back and on a laser-equipped player.

光盘。一张直径 12 厘米(大约 4 3/4 英寸)的磁盘可以用来存储数据音频或数字计算机信息，在激光播放机上回放并且。

Firstly, oscilloscope control system based on GPIB technique is presented with friendly operation environment to the HIFU system, and it uses multithreading technique in programming to realize real-time recording and display of the signal; Secondly, temperature collection and data recording system is designed, which also could get real-time recording and display of the 16 channel temperature signal, and it's believed to be of great use for further experiments of the HIFU system; Thirdly, multiple ultrasonic phased array's phase shifter is designed,which could provide 8-bit phase control in a range of frequency where the centrical frequency is 1MHZ. Fourthly, the module of serial communication is realized to insure the communication between devices and computer, including both synchronous and asynchronous communication, which enables the system to transfer data reliably and stably; Finally, the module of digital quantity control is accomplished, which provide for upper application the consistent solution to the control of exterior devices via digital interface. It can get or set the devices state using interrupt mode to receive input signal or send output signal.

主要有以下几个方面：设计了基于GPIB的示波器控制系统，给课题的研究工作提供了一个良好的环境，它采用了多线程编程的方法，能够较好的实时显示当前波形并记录数据；设计了温度采集和数据记录系统，能够对16路温度信号进行并行同步的实时采集，用于HIFU剂量学研究中温度场检测和医疗评价；设计了相控阵相位延时电路并且通过调试，满足了课题的相位控制的要求，在中心频率为1MHZ左右的频率范围内都能够达到8-bit相位控制；实现了串口通讯模块，为各项设备与计算机之间的通讯提供保证，它提供同步和异步的通讯能力，使系统能够可靠稳定的传输数据；建立了数字量控制模块，为上层应用程序提供一致的方法使用数字接口控制外部仪器，它使用中断的方式来接收输入或输出设定的开关量信号，从而得到或设定各种仪器的状态。

This is the inheritance of the tribe of the children of Issachar according to their families, the cities and their villages.

19：23 这些城并属城的村庄就是以萨迦支派按着宗族所得的地业。

I've have enough of your garbage.

我听了你的废话。