dnf手游2d版公测时间:摘要翻译

本论文 “语音信号频谱分析及显示系统”是基于上海大学多媒体教室环境设计，为《信号与系统》和《数字信号处理》课程建设服务。
为了将《信号与系统》和《数字信号处理》中抽象的概念如频谱、频谱混叠、滤波、加窗等，以直观、可听的形式加以形象化,使学生易于理解和掌握，所以确定以语音信号为研究对象。本文通过对语音信号各种处理技术的分析，采用FFT 算法和MATLAB语言算法，运用MATLAB语言的GUIDE命令生成图形用户界面GUI，通过界面菜单和控件的回调函数的编写，实现对采集的语音信号进行实时回放、加窗处理、巴特沃斯滤波处理以及处理后语音的回放和频谱分析及显示，各种窗函数以及滤波函数的特性分析和显示等；达到可视、可听形象直观的目的。
形成一套特色化的软件演示系统，操作简单，方便使用，形象直观，可直接用于课堂教学和实验，更一步促进上海大学的多媒体教学改革
The paper "voice signal spectrum analysis and display system" is based on the multimedia classroom of Shanghai University environment ，designed for the " signal and system" and the " digital signal processing" courses construction services.
In order to make abstract concepts in " signal and system" and the " digital signal processing" such as spectrum, the spectrum mixed structure, filter, plus windows etc visualize in the intuitionistic and audible form to enable students to understand and master, so author determined to study voice signals. The article through the analysis of the various processing techniques to voice signal, in use of FFT algorithms and MATLAB language algorithms, uses MATLAB language guide orders generating graphical user interface GUI, achieves achieve real-time repeat, the plus window treatment, Butterworth filter processing and the repeat of processed voice signal and the display of spectrum analysis to voice of signals collection, functions of various window and filter characteristics analysis and display through the menus and controls of interface by the callback function for the operation; Doing them for the purposes of visibleness, audibility, visuality and intuitionistics.
帮我看看有什么不行的地方啊，科技论文的形式，我英文过了六级可是翻译确实不怎的阿。