搜索资源列表
FFT
- 用DFT实现长序列卷积并用FFT进行信号谱分析-Long sequence convolution using DFT, FFT signal spectrum analysis
fft
- 优权的傅立叶变换和最大信噪比准则方向图和功率谱，自己编写，仅供参考-Pattern and power spectrum of the Fourier transform of the privilege and the maximum signal-to-noise ratio guidelines written for reference only
hua_fft
- 这是一种很好的画FFT谱matlab程序，里面讲解详细，一看就懂，很实用的-This is a very good picture FFT spectrum matlab, which explain in detail, a see understand, very practical
fft
- 快速傅里叶变换，绘制幅值谱，直接输入信号离散-Drawing amplitude spectrum
FFT-harmonic-Matlab-
- 从Excel表中读取数据，然后分析其频谱、相谱和总谐波畸变率，并画出图（plot）。-Read data from an Excel table, and then analyze its spectrum, phase spectrum and total harmonic distortion rate, and draw the diagram (plot).
FFT
- 信号频谱分析程序 可得出信号的功率谱密度 频谱密度-Signal spectrum analysis procedures can be derived the power spectral density of the signal spectral density
FFT
- 通过读入测量文件中的数据并对测量数据进行FFT变换，并求其功率谱，对数谱等，含详细说明，绝对原创。-By reading data from a file into the measurement and the measurement data, FFT, and for its power spectrum, the spectrum, etc., containing detailed instructions, absolutely original.
fft
- 进行FFT变换，在此基础上作频谱分析、功率谱分析等。-FFT transform, on the basis for spectrum analysis, power spectrum analysis.
lpa
- 采用c语言实现一段语音的线性预测系数的提取，并且画出lpa谱与其fft谱的比较-Using c language to achieve a voice of linear prediction coefficients extracted, and draw lpa spectrum compared with fft spectrum
FFT
- 此程序主要是详细给出了在matlab中如何求解信号的fft，包括功率谱，功率谱密度，幅度谱；-This procedure is given in detail how to solve the signal in matlab fft, including power spectrum, power spectral density, amplitude spectrum
fft-bianhuan2
- 在风基本特性的理论基础上,应用Shinozuka方法对大跨结构的广义脉动风进行了模拟,引入快速傅立叶变换(FFT)技术以提高计算效率,同时给出了Matlab程序框架,并把模拟谱与目标谱进行比较验证,两者吻合较好.-Based on the theory of the basic characteristics of the wind on the application of the generalized method Shinozuka fluctuating wind span struc
2Dimensional-FFT
- 二维FFT的MATLAB实现,包括：简单图像及其傅里叶变换，真彩图像及其傅里叶变换谱 -Two-dimensional FFT in MATLAB, including: simple image and its Fourier transform, true color image and its Fourier transform spectroscopy
DOA-Based-on-FFT-and-MUSIC
- 针对MUSIC算法在进行信号波达方向(DOA)估计时谱峰搜索运算量大的问题,提出了一种基于FFT多波束算法与MUSIC算法的联合DOA估计方法。该方法采用FFT多波束算法形成多个波束,近似估计信号DOA,获得对应波束指向,再利用MUSIC算法实现对信号DOA的精确估计。这样就只需在该波束指向对应的空域范围内搜索,减小了DOA估计的运算量。-MUSIC algorithm for performing signal DOA (DOA) estimates peak search operation
energy-leakage--dual-tree
- 首先根据高斯白噪声频率充满整个频带的特性，通过双树复小波包变换对高斯白噪声进行分解，利用频带能量泄漏的定量分析方法，验证了双树复小波包变换具有较低的频带能量泄漏特性；其次利用双树复小波包变换逐层分解信号，对每层分解所得分量求其FFT谱的峭度，得到基于双树复小波包变换的谱峭度图，根据图中峭度最大的原则，可以自动准确的选择信号分解最佳层数和最佳分量；最后将基于双树复小波包变换的谱峭度图的故障诊断方法应用于实际工程中，对齿轮故障振动信号进行分析，选择最佳分解层数和分量后利用希尔伯特包络解调，有效准确地
fft
- 描绘了一个三种频率四个端点的图，行这个图纸呢更可以进行小波变换和HHT你是内环，通过结果说明HHt谱与时间的关系-Depicts a figure three frequencies of the four endpoints, line drawings that can do more wavelet transform and inner HHT you are, by the results illustrate the relationship between the spectrum
Lab06-FFT
- 离散傅里叶变换的FFT快速计算算法的实现，并计算功率谱密度-Discrete Fourier Transform FFT algorithm for fast computation
fft
- 通过对离散型数据傅立叶变换，求得函数功率谱，双对数曲线-The power spectrum of discrete data using Fourier transform, double logarithm curve
fft
- 本文提出了一种采用六项余弦偶次幂窗三峰插值的算法来对电网谐波进行检测与分析。该算法通过分析电网信号加窗后傅里叶变换的频域表达式，利用谐波频点附近的三根离散频谱的幅值确定谐波谱线的准确位置，进而得到电网谐波的相关参数频率、幅值及相位的计算公式，最后再对其进行加权修正，从而进一步的提高检测的准确度和有效性。- this paper proposes an approach for power network harmonic detection and analysis based on six e
FFT-practice-and-spectrum-analysis-
- FFT实践及频谱分析: FFT应用，幅频谱图，均方根谱，功率谱，IFFT转换。-FFT practice and spectrum analysis
MATLAB-FFT
- 该段代码能实现找出隐藏或淹没在噪声时域信号中信号的频率成分。用FFT对试验数据进行谱分析，指出数据包含的频率成份。-One use FFT is to find hidden or submerged in the time domain signal noise frequency components of the signal. Test data with FFT spectrum analysis, pointed out that the data contained in freq