查询词典 digital signal

Walsh functions are widely used in many areas such as signal and image processing, digital communication etc.

Walsh函数在信号处理、图像处理、通信等众多领域有着广泛的应用。

We know, PC is a digital system, the internal high-frequency characteristics of signal waveforms for the square wave, and square wave contains a large number of harmonics.

我们知道，PC是一个数字系统，内部高频信号的特征波形为方波，而方波含有大量的谐波。

Must be wireless, and real-time waveform of the digital audio signal integrity test system.

要求必须无线方式，并且能实时的对数字音频波形信号完整性测试系统。

Its software uses system self-detecting algorithm to assure measurement channel .It uses softening hardware technique software synchronic data sampling to trace the frequency of exterior signal, in other words , it gives sampling control signals 128 times of power net's frequency .It uses Direct Digital Frequency Synthetics algorithm to transform radical sine waveform parameter table into needed current. It uses FFT algorithm to get radical waveform altitude of current ,voltage and resistor .

整个系统在软件设计上采用系统自检验算法保证测量通道可用，采用硬件软化技术--软件锁相环技术，达到对外部信号频率的跟踪，给出频率为电网工频128倍的采样控制信号：直接数字频率合成技术将基波参数表转换成需要的电流信号，采用FFT变换及基波幅度的计算方法得到被测电流、电压基波幅度和电阻大小。

Maximal use of infrastructure with Arcos' HVN solution, both the existing, and next generation digital STBs, are becoming "virtual DVRs" and the Coax wires - a backbone for QoS signal transmission.

最大化地使用基础设施-Arcos 的HVN解决方案，无论是现有的，以及下一代数字机顶盒，都将成为&虚拟数字录像机&和同轴电缆，是高质量信号传输的支柱。

Bachel degree above, majing in Electronics, with over 2 years related wk experience; over 1 year wk experience in EMC design of board /card products; familiar with EMC testing stards the technical requirements of EMC EMS testing items; familiar with theetical knowledge in analog circuit, digital circuit, high-frequency electronic circuit, signal system electromagnetic field.

电子类专业本科以上学历，2年以上相关工作经验，有1年以上板卡类产品EMC设计工作经验，了解EMC测试标准，熟悉EMC，EMS的各项测试项目的技术要求，熟悉模拟电路，数字电路，高频电子线路，信号与系统，电磁场的理论知识。

A strategy of synchronization control, which combines competition coequality and priority, is mentioned in the paper and uses digital phase-lock loop to track synchronization signal.

在同步控制上，应用了&优先与抢占&的方式产生同步信号，纯硬件实现，简单可靠；使用了成熟的数字锁相环来跟踪同步信号。

Based on the technical and design requirements of the system, this paper provides methods of angle calculation and the electrooptic signal acquisition techniques. According to the principles, we convert the waveform to corresponding impulses and use CPLD to implement the counting and direction discrimination of the count impulse. Furthermore, a new digital subdividing technique for...

根据系统的预期指标，给出了经纬仪角度测量值的计算及光电信号的采集方法；然后根据相应的方法，从硬件上实现了系统所需的角度信号的波形变换、脉冲信号的形成和CPLD辨向计数电路；在此基础上提出了软件细分技术，并分析了此细分方法带来的误差，达到了很高的细分精度。

Some methods, in which synthesized theoretical seismogram of high frequency is taken as record signal and 20%random noise is superimposed on the seismogram, are used to analyze the theoretical seismogram. The digital experiment shows that in the correlating frequency range, Green's function method can measure precisely interstation phase velocity, but the results obtained by correlation and narrow band-pass filtering correlation methods are more dispersed.

以合成的高频理论地震图作为记录信号，并在理论地震图上叠加了20％的随机噪声，利用这些方法分析理论信号，数字实验表明：在相干频率范围内，格林函数方法能够精确测量台间相速度，而互相关法和窄带通滤波互相关法所得结果较为离散。

Accurate analog power is to provide power, digital chip, amplifiers, microcontroller is the voltage required by A/D sampling data output voltage, and comparison, if there is A deviation is the limit, adjust output signal output and closure, alarm, The working process of the working status, manostat by SCM outputs drive LED display, Display circuit used to display the size of the output voltage of power.

准确说就是模拟电源提供各个芯片电源、数码管、放大器所需电压，单片机则通过A/D采样输出电压，与设定值进行比较，若有偏差则调整输出，越限则输出报警信号并截流；工作过程中，稳压电源的工作状态均由单片机输出驱动LED显示；显示电路用于显示电源输出电压的大小。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。