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[matlabLinearBPM

Description: 这是一个简单的FFT为无电位1 +1 +1 Ð 薛定谔方程的光束传播方法。如果该软件灵活,允许引入的术语(如果是极少数需要包括色散效应高阶导数)。例如,如果一个人渴望解决的一个方程的形式: (四/ dz的+ Ð ^ 2/dx ^ 2 - 0.25 * Ð ^ 3/dx ^ 3)== 0 Ÿ 它可以解决使用以下代码: Ž = linspace(0,1,512) x = linspace(-5,5,1024) psi0 =进出口(- x的。^ 2) Ð = D_lateral1D(十,2)-0.25 * D_lateral1D(十,3) 字段= LinearBPM(psi0,有D,Z) 凡D_lateral1D是一个函数,提供“取代”的微分算子。 这个函数是在一个非线性的BPM,我曾对(分步,谱方法等),将提交给我,当我完成他们的文件和组织功能更复杂的设置非常初期阶段。 -This is a simple FFT based beam propagation method for potential-free 1+1+1D Schrodinger equation. The software if flexible and allows to introduce high-order derivatives in the term (very handful if is needed to include dispersion effects). For example, if one desires to solve an equation in the form: (d/dz+ d^2/dx^2- 0.25*d^3/dx^3)Y == 0 It can be solved using the following code: z=linspace(0,1,512) x=linspace(-5,5,1024) psi0=exp(-x.^2) D=D_lateral1D(x,2)-0.25*D_lateral1D(x,3) field=LinearBPM(psi0,D,z) Where D_lateral1D is a provided function that "replaces" the derivative operator. This function is a very early stage in a more complex set of non-linear BPM functions that I have made (split-step, spectral methods, etc.) and I will submit them when I finish their documentation and organization. Sorry for my English, I m eager for your comments.
Platform: | Size: 2048 | Author: zhou | Hits:

[matlabmeierdaopufadematlabshixian

Description: 对录音信号集 中的某一语音,利用BATLAB设计一美尔例谱算法,并实现。 取信号集 中的一个语音信号:“xxxxxx”,将它作为输入的语音信号来为设计一个美尔倒谱算法,在该算法中,主要设计了以下环节: 1.读入一个语音信号;2.对这个信号归一化;3.对归一化的信号进行加窗处理(这里的矩形窗长度必须为257,重帧长64);4.进行预加重处理,即通过一个高通滤波器: ;5进行512点的FFT;6.分别取模平方得到功率谱;7.在设计的mel滤波器组中,我采用了25个带通滤波器;8.将得到的功率谱信号通过mel滤波器组,得到相应的25个功率值;9.对这些功率值取自然对数;10.对这些值取离散作弦变换;11.将得到的值去掉直流分量,取其它值作为MFCC参数。 -Concentrated on recording a voice signal, using BATLAB designed Mayer cases spectral algorithm, and implementation. Get a voice signal signal focus: "xxxxxx", will it as input for the design of a voice signal to Mel Cepstrum algorithm in the algorithm, the main design of the following links: 1. Read a speech signal 2. On the signal normalized 3. Of the normalized windowed signal processing (here, rectangular window length must be 257, re-frame size 64) 4. For Pre-emphasis processing through a high-pass filter: 5 for 512 points of FFT 6. modulo square were obtained spectrum 7. in the design of mel filter banks, I use a 25 band-pass filter 8 . will be the power spectrum signal by mel filter bank, corresponding to the 25 power values 9. on the power to take the natural logarithm value 10. to take these values as strings of discrete transform 11. will be of value to out DC component, to take other values as MFCC parameters.
Platform: | Size: 13312 | Author: 赵欣 | Hits:

[ApplicationsMATLAB

Description: fft program for 512 point with overlap of 50
Platform: | Size: 10240 | Author: Pankaj | Hits:

[DSP programFFT-VCPP-1024-point

Description: FFT VC++ 源码 50HZ 1024点 电压波形MATLAB验证 绝对正确 易修改为32点 64点128点 256点512点1024点等 C文件可直接应用于工程,非常好的C源码.rar-FFT 1024 point 512 point 128 point 64 point 32point
Platform: | Size: 641024 | Author: 高志安 | Hits:

[VHDL-FPGA-VerilogFFTSim.m

Description: 仿真FFT参数对采用FFT算法分析信号频谱的影响。产生频率分别为2Hz,2.05Hz的正弦波合成信号,采样 频率=10Hz。根据(8-8)式,要实现分辨两个单频信号的目的,DFT的序列长度必须满足 。分别仿真3种 情况下的FFT变换:1)取 的128点数据,计算FFT;2)将128点 以补零的方式加长到512点,计算FFT; 3)取512点 ,计算FFT-fft simulation matlab
Platform: | Size: 1024 | Author: 孙范瑞 | Hits:

[Othermatlabfft

Description: 用matlab实现傅里叶fft算法的仿真,采集512点信号,可以实现-Fourier fft algorithm using matlab simulation, collecting 512 points signals can be achieved
Platform: | Size: 1024 | Author: 高莼彬 | Hits:

[matlabjiachuangchazhi512

Description: 改程序能够实现加窗插值FFT算法的matlab仿真,已经得到实验验证,注解清晰详细,代码可读性强.以512点为例进行仿真计算,对与其他点数,如256或是1024可以通过简单修改即可-Reform process to achieve the windowed interpolation FFT algorithm matlab simulation, experimental verification has been, clear and detailed annotations, code readability. 512 points as an example to the simulation of other points, such as 256 or 1024 can be simple modifications
Platform: | Size: 1024 | Author: 吴敌 | Hits:

[matlabOFDM_sim

Description: 1.使用Matlab实现一个OFDM系统。 OFDM系统具体参数参照LTE标准,具体为: 系统带宽:5MHz; OFDM符号长度:0.0714ms; 子载波间隔:15kHz; CP长度:OFDM符号长度的7 ; FFT点数:512; 2.选择一种降低OFDM系统峰均比的算法,在1的基础上实现,并分析其性能。-1 use Matlab to achieve an OFDM system. OFDM system with reference to the LTE standard specific parameters, in particular: system bandwidth: 5MHz OFDM symbol length: 0.0714ms subcarrier spacing: 15kHz CP length: OFDM symbol length 7 FFT points: 512 2 Select a reduced PAPR of OFDM system algorithms, implemented on the basis of 1, and analyze its performance.
Platform: | Size: 8192 | Author: Liuning | Hits:

[matlabfft2-in-matlab

Description: FFT应用举例 x=0.5*sin(2*pi*15*t)+2*sin(2*pi*40*t),fs=100Hz,绘制: (1)数据个数N=32,FFT所用的采样点数NFFT=32; (2)N=32,NFFT=128; (3)N=136,NFFT=128; (4)N=136,NFFT=512。-FFT in matlab example
Platform: | Size: 11264 | Author: liutao | Hits:

[Communication-MobileOFDM

Description: 使用matlab实现OFDM的基本功能 FFT的点数:512 载波数量:200 调制方式:16QAM 每个符号代表的比特数:4 每个子载波包含的符号数:12 信道条件:加性高斯白噪声信道(AWGNC) 循环前缀长度:148 循环后缀长度:20(matlab OFDM 16QAM FFT IFFT AWGNC)
Platform: | Size: 6144 | Author: 鱼鱼与鱼鱼 | Hits:

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