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FFtandIfftTest
- Matlab编程实现FFT变换及频谱分析的程序代码（适合初学者加强理解）。（1)用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图；(2)进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选；(3)做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱；(4)用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图。-Matlab codes for FFT Understanding which contains sine wave,rectangula
pinpufenxi
- 在matlab下实现信号频谱分析：利用快速付里叶变换FFT得到下列信号的频谱，并绘制信号及频图形：1.长2s的方波信号，频率f=10Hz -In matlab signal spectrum analysis: the fast in leaf transform FFT get pay of spectrum, the signal and drew the signal and frequency graphics: 1. The long 2s, frequency f = squar
SoundViewer
- 将输入的音频化成波 内涵FFT函数-Input audio into wave
Simulator
- Simulator 这是一个仿真程序文件夹下面有： acorr 自相关 add 向量相加 convol 卷积 corr 互相关 dlms 自适应算法 hpassfir 高通FIR算法 lpassfir 低通算法 mmul 矩阵相乘 rfft FFT算法实验 sin 这是一个产生正弦波数据的程 sub 向量相减 -Simulator is a simulation program folder belo
avrfft
- SG12232C graphic LCD液晶编程-This is an evaluation use of a small graphics LCD module. Last summer, SG12232C graphic LCD module has been sold sold for 1500 Yens from Akizuki Denshi and I bought it. However I could not find good application for the LCD mo
Data-processing
- 基于FFT的功率谱分析程序设计与应用 2）对实验所采集的转子振动信号进行频谱分析 2．讨论： 1) 信号经过均值化处理或不经过均值化处理的结果比较 2）采用不同窗函数时的谱结果（矩形窗函数, 汉宁窗函数，汉明窗） 3）典型函数的频谱（矩形窗函数, 汉宁窗函数，直线，阶跃函数，δ函数，方波，三角波等） 4）整周期和非整周期采样时两者的比较 5）讨论实验结果 -Based on the FFT power spectrum analysis
TDS
- An example to understand sampling of continous wave and fft
Spectrum-Analyzer
- 这是一个简单的应用，建立了解的Windows音频波形API的基本知识，并得到快速傅立叶变换（FFT）基本掌握。应用程序的特点是：双缓冲图形，采样音频信号源，选择录音源，使用调音台，计算FFT频谱阵列，并绘制采样数据。-This is a simple application built to understand the basics of the Windows Audio WAVE API, and to get a basic grasp on Fast Fourier Transfor
Audio-capture-and-playback
- vc6.0环境下编写的基于快速傅里叶变换(FFT)的音频采集和播放代码，采用mfc设计的采集和播放界面，并能实时的看到声音波形。-vc6.0 environment prepared based on fast Fourier transform (FFT) audio capture and playback code, to mfc design capture and playback interface, and real-time to see a sound wave.
phase_fft
- 实现对两路同频正弦波信号fft变换求相位差，可以在dsp中仿真使用-To achieve the two frequency sine wave signal fft transform and phase difference, and dsp simulation use. . .
yanshejisuan-MATLAB
- 功能： 菲涅耳衍射的S-FFT计算 执行：调入一图像，计算平面波照射下给定波长及距离的衍射场振幅图像 -Given wavelength and the distance of the diffraction field amplitude image function: Fresnel diffraction of the S-FFT calculation of Execution: transferred to an image, computing the plane wave
wave_filter
- 基于matlab 设计的滤波器程序，很实用。内容包括 FIR数字滤波器的设计、IIR数字滤波器的设计、FFT频谱分析及应用等。-wave filter of matlab
FFT_spectrun_aly
- MATLAB关于FFT频谱分析的程序，以余弦信号和矩形波为例做了详细说明，并给出了在噪声时的情况。-MATLAB on the FFT spectral analysis procedures, the cosine signal and the rectangular wave, for example to do a detailed descr iption is given in the case when the noise.
292535AudioWave
- Wave文件读取、播放、实时显示波形、对其作FFT和DCT等功能-Wave document read, play, real-time display of waveform, its function as FFT and DCT
onedimension
- 一維光子晶體，用平面波展開法求能帶圖，其中傅立葉係數用FFT所求出(不同於直接帶入解析解作法)，code很簡單-One-dimensional photonic crystal with a plane wave expansion method for the energy band diagram, where the Fourier coefficients are calculated using FFT (as opposed to directly into the analytic
Cross-correlation
- 基于labview8.6的FFT法测量低信噪比条件下两路方波信号的相位差，经测试，幅值测量精度和相位测量精度都很高-Based labview8.6 FFT method to measure the phase difference between the two square wave signals in low signal-to-noise ratio conditions, test, amplitude measurement accuracy and phase measurem
FFTSim
- 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。-Simulation of the influence of FFT parameters on the frequency spectrum of the signal using FFT algorithm analysis. The frequency of sine wave synthesis are respectively 2Hz, 2.05Hz signal
WaveGPU_Example
- This example solves a 2nd order wave equation: utt = uxx + uyy, with u = 0 on the boundaries. It uses a 2nd order central finite difference in time and a Chebyshev spectral method in space (using FFT). It compares to running the same algorithm on the
ca_code
- nco的产生原理的相关代码；软件无线电、直接数据频 率合成器（DDS，Direct digital synthesizer）、快速傅立叶变换（FFT，Fast Fourier Transform） 等的重要组成部分，同时也是决定其性能的主要因素之一，用于产生可控的正弦波或余弦波。随着芯片集成度的提高、在信号 处理、数字通信领域、调制解调、变频调速、制导控制、电力电子等方面得到越来越广泛的应用-nco the generation principle of the relevant code s
fftSpectrumanalysis
- 1．用Matlab产生正弦波,矩形波,以及白噪声信号，并显示各自时域波形图 2．进行FFT变换，显示各自频谱图，其中采样率，频率、数据长度自选 3．做出上述三种信号的均方根图谱,功率图谱,以及对数均方根图谱 4．用IFFT傅立叶反变换恢复信号，并显示恢复的正弦信号时域波形图- 1. Using Matlab generated sine wave, square wave, and the white noise signal, and displays the respe