查询词典 Signal-to-Noise

Then the digital signal is processed in digital field. At last DPTV converts the digital signal into analog signal and display.

数字处理电视是在模拟广播电视传输体制下，将接收到的模拟电视信号转换成数字信号，经过数字处理后再转换为模拟信号并显示输出。

Digital signal processing and analog signal processing is a subset of signal processing.

数字信号处理与模拟信号处理是信号处理的子集。

Signal processing devices can be used analog signal processing devices can also be using digital signal processing devices.

信号处理装置可以采用模拟信号处理装置，也可采用数字信号处理装置。

Speaking from the function, the long-distance image surveillance system can be divided into two parts. The first part is a module of signal gathering and control. It uses AT89C51 as the main processor, which includes sensor signal measure, autodial, circuit state measuring, DTMF signal decoding, and automatic control.

从功能上讲，远程图像监控系统大至可分为两部分：第一部分是以A789C51为主处理器的信号采集和控制单元，包括传感器信号检测、自动拨号、线路状态检测、DTMF信号解码和自动控制五个小模块，用以实现对现场信号的采集、自动拨号报警和远程控制。

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。

AC:ac coupling,block the DC signal of input signal only AC signal pass into attenuator.

AC：交流耦合，阻断输入信号的直流信号，只有交流信号通入衰减器。

It also summarizes the same point between signal timing and lane channelization in nature and illustrates that it is optimal cycle length and signal phase that is the critical part of signal timing.

用数据说明了确定最佳周期长度和调整好信号相位是信号配时的关键所在。

Based on the spectral correlation theory of CS signal,a cyclic spectrum detection method of SS signal using acousto-optic signal processing technique was presented.

基于循环平稳随机信号的谱相关理论，提出了一种采用基于声光信号处理技术的扩频信号循环谱检测方法。

A three dimensional stereo sound reproducing apparatus for a mobile communication terminal comprises: a memory for storing sound data having a three dimensional stereo sound effect; a sound processing unit for reading the sound data from the memory when an incoming call is generated or when a user requests reproduction of the sound data and for decoding the sound data without distortion of the three dimensional stereo sound effect, thereby outputting the sound data as a type of an analog signal; and a speaker for amplifying the analog signal and outputting the amplified analog signal as a type of an audible sound.

该移动通信终端的三维立体声再现设备包括：用于存储具有三维立体声效果的声音数据的存储器；当生成呼入呼叫时或当用户请求再现声音数据时，用于从存储器中读出该声音数据并解码该声音数据而不会使三维立体声效果失真，由此以模拟信号的形式输出该声音数据的声音处理单元；和用于放大该模拟信号并输出该放大的模拟信号的扬声器。

The co-channel interference rejection filter for outputting a second input signal by removing co-channel interference from a first input signal; a first post processor for removing interference other than co-channel interference from the second input signal; a second post processor for removing interference other than co-channel interference from the first input signal; and a selection controller for selecting the output of the post processor which has less error by comparing the output of the first post processor with the output of the second post processor.

一种共道干扰消除器及其方法，其中抗共道干扰滤波器从第一输入信号中除去共道干扰并输出第二输入信号，第一后置处理器除去第二输入信号中的非共道干扰，第二后置处理器除去第一输入信号中的非共道干扰，选择控制器比较第一后置处理器和第二后置处理器的输出，从中选择误差较小的后置处理器输出。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。