查询词典 digital signal

A new algorithm for digital audio watermarking is proposed in this paper. This algorithm bases on the wavelet transform. By using this algorithm, the watermarked speech signal sounds the same as the original one. The tiny difference is neglectable by human ear.

主要研究了在数字语音信号中加入数字水印的方法，提出了一种基于小波变换的数字水印隐藏与检测算法，用这种算法隐藏水印具有很强的隐蔽性，对原始语音的影响基本上察觉不出来。

A sort of image acquisition system of paper's number with CIS based on ARM and CPLD is introduced.A re-al-time approach is brought out to collecting high-speed image information and image pretreatment.This system is mainly designed of hardware,the collected CIS image signal is saved in the SDRAM(synchronous dynamic random access memory) through pretreatment of occulting output com-pensation,secondary filter,analog digital converter and binaryzation,getting ready for further image...

介绍了一种自行设计的基于 ARM 及 CPLD 技术，利用接触式图像传感器采集纸币号码的图像采集系统，提出了一种实时采集高速图像信息及图像预处理的方法；系统以硬件设计为主，采集到的 CIS 图像信号经过明暗输出补偿、二阶滤波、模数转换、二值化等前置调理，保存在同步动态内存中，供 ARM 作进一步图像处理；系统中 CIS 传感器的时序信号由 CPLD 设计，实验表明，采集到的二值化图像清晰；这项研究成果可以推广到证券、票据号码的录入系统以及其他相关领域的字符识别系统。

12V/24V low voltage power supply, which is used in ground light, is safe and reliable. Inside synchronic digital controller realizes the effects of color changing. Without connecting to outside controller and cords, the synchronic signal trigger function of the inside controller could make lots of ground lights change color at the same time, including flickering, gradual changing, scanning, chasing, running and etc. to satisfy the requirements of lighting in different places. The combination of light and shade draws a colorful city nocturne, breeding a vivid feeling of live and phantasmagoric. LED ground light it novelty lighting and the best choice of city nocturne.

采用低压12V/24V 供电，安全可靠；通过内置同步数码控制器来实现颜色的变化功能，内置控制器具有同步信号触发功能，无需再外接控制器和控制线就能使无数个 LED 埋地灯实现同步变色，包括七彩跳变、七彩渐变、七彩扫描、七彩追逐、七彩跑马等功能以满足不同场所对灯光效果的需求，光与影的结合，勾画出七彩都市迷人的夜景，同时给人一种生动活泼、色彩缤纷、变化无穷的全新感觉、是现代化城市夜景的新颖之作和理想选择。

On release of digital compression, the signal height as well as the pulsatility promptly returned.

因此，当治疗有高神经损伤风险或翻修的患者时，手术医生应考虑保留节段血管。

A kind of digital method for subdividing feedback signal is presented in this paper.

本文提出了一种数字化细分方法，基于该方法，反馈信号的分辨率可提高6倍。

The data acquisition subsystem based on AT89C51 acquires multichannel acoustic signal synchronistically and stores digital signals in the shared memory.

基于单片机AT89C51的数据采集子系统完成对多路声信号的同步采集，并把数字信号保存到片外共享存储器中。

At first we established an AC small-signal model of welding inverter and designed a digital controller on the basis of analyzing a typic analog welding control circuit.

本文在这部分的研究工作中，首先建立了弧焊逆变电源的交流小信号模型，并对典型的模拟控制电路进行了分析。

An RF power meter is basically an untuned RF sensor or detector followed by signal-processing circuitry consisting of DC or AC-DC amplification stages and analog-to-digital-conversion stages Fig.

一般功率计的信号链路如图1所示，由一个未调谐的射频传感器或检测器，后面是包括 DC 或者 AC-DC 放大环节和 ADC 环节组成的信号处理电路。

A digital watermark embeds an imperceptible signal into data such as audio,video and images,for different purposes,including captioning and copyright control.

0引言当前，计算机的普及使得很多文学或艺术作者直接将作品以数字方式记录和存储下来，而网络的飞速发展也为数字作品的传输提供了便利。

The flow calculator transfers the flow rate, pressure, temperature analogue signal to digital, then calculates the real time flow in standard condition and cumulates the flow.

流量积算仪采集4～20mA 的流速、压力和温度信号，计算出实时的标准状况流量，然后对流量进行累积计算，通过液晶显示屏显示实时流量、累积流量、温度、压力以及历史流量。

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。