Search - Fourier Harmonic Series

Search - Fourier Harmonic Series - List

[Other resource] DFT分析模拟信号频谱 DL : 0: 应用傅里叶变换DFT，分析各种离散信号x(k)的频谱。离散周期信号可以展开成傅里叶级数，所以离散周期信号的频谱是一个周期的周期性离散频谱，各谱线之间的间隔为，而且存在着谐波的关系。 -DFT application of the Fourier transform, analyze discrete signal x (k) of the spectrum. Discrete signal cycle can begin as Fourier series, the discrete signal spectrum is a cyclical cycle of discrete spectrum, the line between the interval, but there is a harmonic relationship.
Date : 2008-10-13 Size : 37.96kb User : 殷开
[matlab] DFT分析模拟信号频谱 DL : 0: 应用傅里叶变换DFT，分析各种离散信号x(k)的频谱。离散周期信号可以展开成傅里叶级数，所以离散周期信号的频谱是一个周期的周期性离散频谱，各谱线之间的间隔为，而且存在着谐波的关系。 -DFT application of the Fourier transform, analyze discrete signal x (k) of the spectrum. Discrete signal cycle can begin as Fourier series, the discrete signal spectrum is a cyclical cycle of discrete spectrum, the line between the interval, but there is a harmonic relationship.
Date : 2025-07-19 Size : 38kb User : 殷开
[Algorithm] fuliyejishu DL : 0: 创建25个谐波的傅立叶级数，计算三角形式的傅立叶级数并将计算结果和转换结果相比较，最后绘制频谱。-The creation of 25 harmonic Fourier series, calculation of the triangular form of Fourier series and the results of calculations and conversions, compared to the final rendering spectrum.
Date : 2025-07-19 Size : 25kb User : 胡燕
[Other] parsevaltheorem DL : 0: 如果是复指数形式的傅里叶级数，因为复指数函数的功率等于其系数的模的平方，直接把傅里叶系数平方求和就行；如果是三角形式的傅里叶级数，因为三角函数的功率等于其系数的模的平方的一半，需要把各次谐波傅里叶系数平方求和的一半与直流分量的平方相加。-If the complex exponential form of Fourier series, complex exponential function because the power is equal to the square of the modulus of its coefficient, the square sum of Fourier coefficients directly on the line If the triangular form of Fourier series, because the triangle function of power equal to the square of the modulus of its coefficient of half of the need to square the harmonic Fourier coefficients of half the sum of the square sum of the DC component.
Date : 2025-07-19 Size : 13kb User : 李国俊
[matlab] matlab DL : 0: 周期函数的傅立叶级数与信号重构基波与谐波-Periodic function of the Fourier series and the fundamental and harmonic signal reconstruction
Date : 2025-07-19 Size : 98kb User : 严路
[matlab] fangbo DL : 0: 将方波周期信号展开成傅里叶级数并生成3次，5次，8次，10次谐波-Expand the square wave into a Fourier series of periodic signal and generates 3 times, 5 times, 8 times, 10 times harmonic
Date : 2025-07-19 Size : 1kb User : 王芳
[Software Engineering] Fourier-series-expression DL : 0: 实现了3阶和4阶的球谐傅里叶级数的表达。-To achieve a 3-order and fourth-order spherical harmonic Fourier series expression.
Date : 2025-07-19 Size : 2kb User : 刘鑫
[Embeded-SCM Develop] garm_ DL : 0: harmonic signal. source made with the help of mathcad. Decomposition of periodic signals in a Fourier series. Сonstruction of the signal spectrum.
Date : 2025-07-19 Size : 41kb User : bwhead
[SCM] second-harmonic DL : 0: 通过msp430从一系列的合成波形中取出二次谐波，程序采用傅里叶变换-Through the msp430 from a series of synthetic waveform out of the second harmonic, and the program using Fourier transform
Date : 2025-07-19 Size : 117kb User : 张鑫
[matlab] fuliyebianhuan DL : 0: 用matlab编程对电压信号用离散化傅里叶级数变成求各次谐波含量-Matlab programming voltage signal with a discrete Fourier series becomes the harmonic content of each request
Date : 2025-07-19 Size : 1kb User : 樊迪
[matlab] 信号与系统实验3 DL : 0: 1、利用Matlab求观察图示周期三角脉冲的傅里叶级数与原波形的关系。要求分别画出最高谐波次数n=1，3，5，7时合成波形与原波形的对照图。(The relationship between the Fourier series of the graphic periodic triangular pulse and the original waveform is observed by Matlab. The comparison of the synthetic and original waveforms at the highest harmonic frequency of n=1, 3, 5, and 7 is required)
Date : 2025-07-19 Size : 91kb User : 纷纷666
[Embeded-SCM Develop] ENVI_HANTS_Tool DL : 1: NDVI时间序列谐波分析法(Harmonic Analysis of NDVI Time-Series)（简称Hants ）对时间序列数据进行平滑。该方法是一种新的物候分析方法，可用于定量化的监测植被动态变化。其核心算法是傅里叶变换和最小二乘法拟合, 即把时间波谱数据分解成许多不同频率的正弦曲线和余弦曲线，从中选取若干个能够反映时间序列特征的曲线进行叠加，以达到时间序列数据的重建目的。(The NDVI Time Series Harmonic Analysis of NDVI Time Series (Hants) smoothes Time Series data. This method is a new phenological analysis method, which can be used for quantitative monitoring of dynamic changes of vegetation. The core algorithm is the Fourier transform and least squares fitting, namely the time spectrum data is decomposed into many different frequency sine curve and cosine curve, selected from several can reflect the characteristics of time sequence curve superposition, the reconstruction of the time series data in order to achieve purpose.)
Date : 2025-07-19 Size : 16kb User : 魄力