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[assembly language] matlabxueqi DL : 0: 小学期的源程序 1．试编MATLAB程序。信号 sinc(10*t),-2<=t<=2 m(t)= 0,其它用100hz的载波来产DSB信号并解调。完成下列工作：画出已调信号；求已调信号的频谱，并用图像表示。画出解调信号；求解调信号的频谱，并用图像表示。 2．信号 sinc2(100t),|t|≤t0 m(t)= 0, 其它采用频率调制调制为1000HZ的载波。频偏常数为kf=50,t0=0.2。注：（求和代替积分） 3．信号 2, t0/3>t>0 m(t)= -6, t0/3<=t<2*t0/3 0, 其它 t0=0.15,使用AM调制和包络检波解调.-Primary phase of source 1. Test procedures for MATLAB. Signal sinc (10* t),-2 < = t < = 2 m (t) = 0, the other with the 100hz signal carrier to the middle class and DSB demodulation. To complete the following tasks: Draw has been transferred signal for the spectrum signals have been adjusted, and image representation. Draw demodulation signal solving transfer spectrum signal, and image representation. 2. Signal sinc2 (100t), | t | ≤ t0 m (t) = 0, the other the use of frequency modulation of the carrier modulation for 1000HZ. Offset constant kf = 50, t0 = 0.2. Note: (sum in lieu of points) 3. Signal 2, t0/3> t> 0 m (t) =-6, t0/3 < = t < 2* t0/3 0, other t0 = 0.15, the use of AM modulation and demodulation envelope detector.
Date : 2025-12-16 Size : 3kb User : 张静
[assembly language] 00 DL : 0: 利用matlab实现移位卷积相加 -Using matlab convolution sum, and so achieve the shift
Date : 2025-12-16 Size : 7kb User : 何中勋
[assembly language] matlab DL : 0: 基于遗传算法的投影寻踪代码，提供大家下载，方便查阅-【研学堂】【代码】投影寻踪代码，请验用！！ function Qa=Project_Pursuit(X,a,Alpha) 输入参数列表 X 本指标矩阵，n×p的矩阵，每一行为一个样本， Xij表示第i行第j列指标，X是否已经归一化均可 a 投影向量，1×p的矩阵，元素取值范围-1～1，要求其元素平方和等于1 Alpha 窗口半径系数，典型取值0.1 输出参数列表 Qa 投影指标函数第零步：对a的预处理 b=sqrt(sum(a.^2)) a=a/b 第一步：归一化处理 [n,p]=size(X) x=zeros(n,p) Xjmax=max(X) Xjmin=min(X) for i=1:n x(i,:)=(X(i,:)-Xjmin)./(Xjmax-Xjmin) end 第二步：构造投影指标值 Z=zeros(n,1) for i=1:n Z(i)=sum(a.*x(i,:)) end 第三步：计算投影指标函数计算类间类内矩阵散度 meanZ=mean(Z) Sa=0 for k=1:n sa=(Z(i)-meanZ(i)).^2 Sa=Sa+sa Sa=sqrt(Sa/n) end R=Alpha*Sa 窗口半径 Da=0 for k=1:n rik=abs(Z(i)-Z(k)) if R>rik Da=Da+rik Da=Da+R-rik end end Qa=Sa*Da
Date : 2025-12-16 Size : 1kb User : 余文乐
[assembly language] touchtone DL : 0: 运用FFT技术来综合和分析电话拨号的过程，matlab来分解了这一过程，希望能提供帮助- TOUCHTONE Use FFT to synthesize and analyze telephone dialing The dual tone multi-frequency (DTMF) standard specifies that the tone generated by a button on a telephone key pad is the sum of two sinusoids, with frequencies determined by the button s row and column. The dial pad on the upper left allows you to select buttons and generate the corresponding tones. The signal plotted on the upper right is a recording of the FAX number for the MathWorks being dialed. You can replay the entire signal, or select individual segments. The power plot is the magnitude of the FFT of the signal being played. What is the MathWorks FAX number?
Date : 2025-12-16 Size : 2kb User : lipu