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1、the principle of simplified EIA of construction projects in the region. In terms of land, linked to the implementation of urban and rural construction land increase and decrease, replacement indicators for priority areas project. Charges, into the projects of water, electricity, administrative charg
2、es and preferential policies. In the area of taxation, and settled in areas of industry and its production company, within 5 years after the completion of fiscal incentives to enterprises. In terms of financing, integration of land, tax, financial and other resources, and construct Government credit
3、 + business credit credit system, establishment of marketization, commercialization and modernization of the investment and financing platform; effective Bank-enterprise docking, encourages private capital into the Park, to raise industry development fund. 5, optimize the environment and service ind
4、ustries. To create policy lowlands, Highlands, integrity of service land, development land as the goal, to optimize the area under development environment. All administrative law enforcement departments to appoint a full-time personnel stationed in areas dedicated to coordinating and solving problem
5、s associated with businesses in this sector. When there are substantial issues, sector leaders arranged to personally intervene, in-person, in-person push tangible area building a green light, easy line. To further reduce and standardize administrative examination and approval items, simplify examin
6、ation and approval links, improve efficiency; according to the .Since the educational practice of the mass line of the party, himself seriously in the education, practical control central eight rules and opposing the four winds and practicing three Suns, and check the spirit of Jiao Yulu, ideology,
7、solicit opinions based on outstanding problems checked swing, careful analysis and reflection. Will now check report is as follows: first, adherence to the partys political discipline, eight in the central provision, change the style of the basic situation of 1, in compliance with the partys politic
8、al disciplines. Conscientiously abide by the partys political discipline, abide by the Constitution and the rules and regulations of the party, in the political, ideological and maintain highly consistent with the CPC Central Committee on the action, there is no violation of the partys political dis
9、cipline problems. 2, in the implementation of the central authorities of the eight provisions. Improving research, improving research methods, but there are less grass-roots units, primary first-hand an inadequate grasp of the problem, which is to be strengthened in the future. Second, construction,
10、 strictly in accordance with the provisions to streamline and improve the quality of meetings of the Conference. Third, streamlining file briefs, culture involves all aspects of propaganda and ideology, sometimes due to the practical needs of invention notifications, this area needs further武汉大学教学实验报
11、告电子信息学院 电子信息工程 专业 2010 年 5 月 29 日 实验名称 wav信号的波形分析与合成 指导教师 黄根春老师 姓名 王帅 年级 2008级 学号 86 成绩 一、 预习部分1. 实验目的2. 实验基本原理3. 主要仪器设备（含必要的元器件、工具）一、实验目的1.巩固傅里叶变换及其反变换的知识，学习从时域和频域两个角度来观察信号。2.尝试利用短时傅里叶变换分析非平稳信号的频谱变化。3.熟悉MATLAB环境中wavread、wavrecord、wavplay、fft和ifft等函数的应用。二、实验原理借助傅里叶变换，信号可以时间函数或频率函数两种形式描述，特别是周期信号和准周期信
12、号（前者由一个基频成分和若干谐波成分，后者虽可分解为几个正弦分量，但它们的周期没有公倍数），从频率域可以很清楚地了解它们由哪些正弦分量组成。而对于非平稳信号，最典型的例子就是语音信号，它是非周期的，频谱随时间连续变化，因此由傅里叶变换得到的频谱无法获知其在各个时刻的频谱特性。最直观的想法就是用中心在某一时刻的时间窗截取一段信号，对其做傅里叶变换，得到这一时刻的频谱；然后将窗在时间轴上移动，从而得到不同时刻的频谱，这就是短时频谱的原理。最简单的窗就是矩形窗，即直接从原信号中截取一段。三、 涉及的MATLAB函数1 wavread功能：读取Microsoft的WAVE文件。基本调用格式：y,Fs,
13、nbits=wavread(filename)载入以filename命名的WAVE文件。y为采样数据，Fs为WAVE文件被采样时所用的采样频率，nbits为用于描述每个采样点的编码数据位数（常用的有8bits和16bits）。其中filename以单引号括起的字符串方式输入。2.wavrecord功能：应用PC机上音频输入设备录制声音。基本调用格式：y=wavrecord（n，Fs）对某音频信号以FsHz采样率连续录入n个采样点的数据。其中Fs默认值为11025Hz。3wavplay功能：应用PC机上音频输出设备播放已录制的声音。基本调用格式：Wavplay（y，Fs）以Fs播放存入矢量y中的
14、音频信号。Fs默认值认为11025Hz。注：亦可参看sound函数。4.fft功能：离散傅里叶变换函数。基本调用格式：Y=fft（X，n）对矢量X进行n点离散傅里叶变换，结果存入矢量Y。计算时所用算法为快速傅里叶变换（FFT）。如果X为普通矩阵，那么返回为对矩阵进行逐列离散傅里叶反变换的Y矩阵5.ifft功能：离散傅里叶反变换。基本调用格式：y=ifft（X，n）返回对矢量X进行n点离散傅里叶反变换的结果。同样利用FFT算法进行具体计算，若X为矩阵，返回结果为逐列离散傅里叶反变换的Y矩阵四、 实验操作部分1. 实验数据、表格及数据处理2. 实验操作过程（可用图表示）3. 实验结论1.声音的采集
15、MATLAB提供了读入、录制和播放声音以及快速傅里叶变换的函数，分别是wavread、wavrecord、wavplay和fft。2.持续音的频谱分析将Windows的系统目录下的ding.wav文件读入，这是一个双声道的声音，选择任一个声道的信号，使用fft求取其频谱，并用plot显示它的幅度谱，观察主要正弦分量：所用代码：y,fs=wavread(ding.wav);yr=y(:,1);yr=yr(1:1024);YR2048=fft(yr,2048);figure(numbertitle,off,name,2048FFT);plot(linspace(-pi,pi,2048),fftshift(abs(YR2048);YR1024=fft(yr,1024);figure(numbertitle,off,name,1024FFT);plot(linspace(-pi,pi,1024),fftshift(abs(YR1024);运行结果：用ifft函数求取频谱的反傅里叶反变换，比较反变换后的信号波形与原始信号波形；所用代码：yr1024=real(ifft(YR1024);yr1024=real
