傅里叶分析是将声音分解为正弦波的数学方法。
Fourier analysis is the mathematical method used to break sounds down into sine waves.
并用傅里叶分析的方法导出正确的结论，且与实验现象完全符合。
By means of Fourier analysis, a correct result is derived which fits well with the experimental results.
通过比较傅里叶分析和小波分析中能量守恒公式，提出了小波能量谱的概念。
The conception of wavelet energy spectrum (WES) is posed by comparing the conservation of total energy in harmonic analysis, power spectrum analysis and wavelet transform.
本文采用一种新的傅里叶分析技术—算术傅里叶变换(aft)来计算dft。
In this paper, a new Fourier analysis technique called the arithmetic Fourier transform (AFT) is used to compute DFT.
传统的傅里叶分析由于在时域不能局部化，难以精确检测到信号发生突变的时间。
Conventional Fourier transform can 't localize in time field, so it can' t inspect signal 's break time accurately.
这种类似地震的声音是通过修改基于对称傅里叶分析理论生成函数频率信息而生成的。
In our new method, an earthquake‐like sound is generated by modifying the frequency information of a generating function based on the symmetric Fourier analysis theory.
提出了一种基于旋滤波法的干涉条纹预处理方法，并将其应用到载波傅里叶分析法中。
A new fringe-pattern preprocessing based on median spin filter is proposed to deal with the interferogram with high-level noise.
对这些仿真信号进行短时傅里叶分析，求出相应的最大频率、平均频率和频谱宽度等曲线。
The relative waveforms, such as maximum frequency, mean frequency and bandwidth, were obtained using the short time Fourier analysis of those simulated signals.
结果表明，虚拟激励法在汽车随机振动分析中的应用和傅里叶分析方法同样有效，却简单得多。
The results show that in application to vehicle random vibration analysis, pseudo excitation method is as effective as Fourier analysis method but much simpler.
比较结果表明，用空间傅里叶分析法识别托卡马克中的MHD扰动模式是一种可以行之有效的方法。
The simulation results indicate that the spatial Fourier analysis is a better method to determine the MHD perturbation mode in tokamak.
由于在全息干涉测量中引入载波条纹，所以能够方便地应用傅里叶分析方法分析计算干涉条纹的动态变化。
With the introduction of carrier fringes in digital holographic interferometry, Fourier analysis method was used to analyze interference patterns and calculate their dynamic changes conveniently.
在传统傅里叶分析的基础上，给出了一种实时傅里叶分析的方法，并针对DSP控制系统，运用了滑窗迭代的计算方法。
Real time Fourier analysis is introduced on the basis of traditional Fourier analysis. APF USES a slippage iterative calculation method to suit DSP control system.
与傅里叶分析中使用的无限重复的正弦波不同，小波常常是不规则的和非对称的，随着离中心点越来越远，其数值逐渐靠近零。
Unlike the sinusoidal, endlessly repeating waves used in Fourier analysis, wavelets are often irregular and asymmetric, with values that die out to zero as they move farther from a central point.
本文将结合分步傅里叶方法和小信号分析法来求解复杂的非线性薛定谔方程(NLSE)。
This paper will use small signal analysis and split-step Fourier to solve the complex nonlinear Schrodinger equation (NLSE).
为了改善高速磁浮主轴的径向回转精度，该文提出了二维傅里叶频率分析的新方法。
A novel method about two dimension Fourier frequency analysis is proposed in order to obtain high radial rotate precision.
不同于传统股市周期理论，本文使用傅里叶谱分析技术来模拟预报股市周期。
Differing from the traditional theories of stock market cycle, we used the Fourier spectrum analysis method to forecast the cycle.
利用傅里叶级数对其进行了频谱分析，计算了次数小于19次的各次谐波电流均方根值的频谱数据。
Using Fourier series, the frequency spectrum analysis was analyzed, and spectrum data of harmony wave less than 19 were calculated.
用快速傅里叶转换（FFT）技术分析了图形视网膜电图（PERG）的空间和时间调谐特性。
Spatial and temporal frequency tuning characteristics of the pattern electroretinogram (PERG) were analysed by means of the fast Fourier transform (FFT)technique.
本文提出一种无需滤波处理的调频条纹分析算法，该算法与傅里叶技术相比具有省时、便于进行快速、实时位相测量等优点。
A new algorithm of analysing FM (frequency modulation) interferogram is described. Compared with the Fourier method, it is time saving and suitable for real-time calculation.
把傅里叶频谱分析方法引入棱镜-薄膜波导耦合系统的输入输出耦合问题，快速而完整地求解了系统输入输出耦合方程组。
The Fourier spectral analysis method is applied to the input-output coupling problem of a prism-thin film waveguide system. The input-output coupling equations are solved fast and exactly.
为了解决此问题，提出了一种解决方法，并用傅里叶公式对其进行了理论分析。
In order to solve this problem, proposed one solution, and has carried on the theoretical analysis with the Fourier formula to it.
提出一种将主成分分析(PCA)与最远点距离(FPD)相结合的二维形状傅里叶描述子。
This paper proposes a new Fourier shape descriptor integrated with Principal Component Analysis (PCA) and the Farthest Point Distance (FPD).
然后在白光光学频谱分析系统中，利用放置在傅里叶频谱面上的取样狭缝得到按频率假彩色编码的频谱图。
The frequency pseudocolor-coded speech spectrogram is then obtained by means of a sampling narrow slit placed at Fourier plane in white-light optical spectrum analyzer.
采用非模方法，得到了扰动量的剪切傅里叶谐波分量随时间演化的方程组，并对方程组进行了数值分析。
Using the Nonmodal approach, the temporal evolution equations with Spatial Fourier Harmonics for the disturbed quantities are obtained, and have been studied numerically.
建立了描述厚层光刻胶内衍射光场形成过程的物理模型，并利用傅里叶模方法模拟计算和分析了其内部衍射光场分布。
Then Fourier model method, mostly applied to study the diffractive properties of gratings is adopted to analyze the diffractive image field in thick film photo resist.
本文简要介绍了傅里叶红外光谱仪的原理和构造，综述了傅里叶红外光谱分析在环境试验中的应用以及分析、研究方法和技术。
The principle and construct of FTIR and its application in environmental testing were introduced. The analysis and study methods and technology were also summarized.
用傅里叶频谱分析方法研究了横向莫尔条纹中一个光栅倍频时莫尔条纹的变化。
Based on the lateral Moire fringe of the gratings, the change of Moire fringe was researched by using Fourier spectrum while the frequency of a grating was changed.
利用能谱技术分析白色颗粒的元素组成，结合傅里叶红外光谱和13c核磁共振技术分析白色颗粒中的官能基团。
The energy spectrum technology was used to analyze the elements, then the functional groups were analyzed by FTIR and 13c NMR.
本文用傅里叶级数的方法分析了合成波形的频谱特性，并对由于相位截断引起的杂散谱作了讨论。
This paper analyzes the spectral characteristic of the synthesized waveform by use of the Fourier Series, and discusses the spurious spectrum of the phase truncation errors.
本文用傅里叶级数的方法分析了合成波形的频谱特性，并对由于相位截断引起的杂散谱作了讨论。
This paper analyzes the spectral characteristic of the synthesized waveform by use of the Fourier Series, and discusses the spurious spectrum of the phase truncation errors.
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