应用快速傅立叶变换方法对脉搏信号进行了分析。
The pulse signals were processed by using the fast Fourier transforms.
主要应用傅立叶变换方法计算各种信号的振幅谱和相位谱。
This paper presents computation of the signal's amplitude spectrum and phase spectrum the Fourier transform.
并利用快速傅立叶变换方法对谐波、闪变和纯正弦波等稳态现象进行分析。
As to steady state phenomena, the traditional signal analysis tool FFT is used for harmonic analysis and flicker.
傅立叶变换方法太常用了，以致于人们在考虑如何处理声音信号时，这几乎成了唯一的方法。
FTs are used so much that it has become the only way people can consider a sound.
据以往研究，假设渗透系数场遵循对数正态分布，利用直接傅立叶变换方法来生成渗透系数随机场。
On the assumption that the hydraulic conductivity field follows a lognormal distribution, the direct Fourier transform is introduced to generate multiple realizations of hydraulic conductivity field.
为了准确求解波面，我们将其调制在一载频条纹上，利用傅立叶变换方法对条纹图进行处理后，解出干涉图所代表的波面。
To work out the wavefront accurately, we modulate it on a carrier frequency. The wavefront can be worked, using the Fourier Transform method on the interferogram.
针对传统时域傅立叶变换方法的缺点，笔者首次提出了一种从角域到倒角域的傅立叶变换方法，并推导了该变换的理论公式。
According to the shortcomings of traditional time domain Fourier transform, one new method of Angle domain Fourier transform is put forward at first time, and theoretical formulas are deduced.
离散傅立叶变换方法能够在DSP平台上通过FFT快速实现，而循环相关方法则具有很高的频率估计精度和很好的抗噪性能。
DFT method can be fast implemented on DSP platform by the use of FFT algorithm, while the method of cyclic correlation has better noise immunity performance and high estimation accuracy.
对信号进行分析时通常采用传统的傅立叶变换方法，傅立叶变换是时域和频域相互转换的数学工具，从物理意义上讲其实质是将信号分解成许多不同频率的正弦波的叠加。
It is normal to use the FFT method to analyze signals. This method is one kind of mathematical method that changes the time domain signals to frequency domain signal.
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
提出了一种新的近似完全重构(npr)离散傅立叶变换(DFT)调制滤波器组的原型滤波器设计方法。
A novel design method for the prototype filters of a Near Perfect Reconstruction (NPR) Discrete Fourier Transform (DFT) modulated filter bank is proposed.
在第二章中，针对两组分和三组分混合体系分析问题提出了傅立叶变换平滑比光谱导数的新方法。
In chapter two, a new method which combines Fourier transform smoothing with ratio spectra derivative has been developed for analysis of binary or ternary mixtures.
这两种方法都是通过确定逆傅立叶变换域最大峰值位置来获得配准信息。
The both methods obtain registration information by determining maximum peak in inverse Fourier Transforms domain.
傅立叶变换作为一种传统的信号分析和处理方法，已在数学和工程应用中发挥了重要的作用和产生了深远的影响。
Fourier translation, as a traditional method of signal analysis and processing, has essential effect and bring far_-reaching impact on mathematics and engineering application.
伪谱法利用傅立叶变换和有限差分求解波动方程，是三维波场正演模拟的重要方法之一。
The pseudo-spectrum method uses Fourier transform and finite difference to solve wave equation. It is one of the important methods used to simulate the seismic wave field.
傅立叶变换是分析信号奇异性的传统方法。
The Fourier transform is a classical method for analyzing signal singularities.
本文介绍了用短时傅立叶变换分析瞬态诱发耳声发射方法，并给出了其时频分布的实验结果，分析了其各个频率成份出现的不同时刻及持续时间。
This paper introduces the method of analyzing TEOAEs by short time Fourier transform and gives the experiment results of time frequency distribution, then we analyze each frequency component.
有一种直接基于DFT的信道估计方法利用均匀梳状分布的导频符号和离散傅立叶变换（DFT）完成信道估计。
The direct DFT based channel estimation method uses comb-type pilot symbol and discrete Fourier transform (DFT) to estimate the channel.
基于傅立叶变换的条纹细分法，其处理速度介于前面两种细分方法之间。
The processing speed of the fringe subdivision method based on Fourier transform is between that of the first method and the second method.
传统的信号分析方法傅立叶变换只适于周期的、稳态的信号。
The traditional signal analysis method is Fourier analysis and it is only applied to steady and periodically signals.
在传统的信号处理中，人们分析和处理信号最常用也是最直接的方法为傅立叶变换。
The method of analyze and process signal is Fourier transform in traditional signal processing.
目的将傅立叶变换去卷积方法用于峰纯度检查，并在此基础上建立峰纯度检查的概率模型，给出有准确率的判断结果。
AIM: to apply Fourier de-convolution method in the purity test of chromatographic peak and develop a novel probability model for evaluation of the accuracy of purity judgment.
用X光电子谱和傅立叶变换红外谱方法表征了制备的薄膜。
The synthesized films were characterized by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy.
目前，相移法、傅立叶变换法和条纹骨架法是三种主要的提取相位的方法。
At present, phase shifting method, Fourier transform method and fringe skeleton method are three most important fringe analysis methods.
在求解过程中应用共轭梯度法(CGM)和快速傅立叶变换(FFT)相结合的方法降低所需计算机内存和CPU时间。
The conjugate gradient method (CGM) and fast Fourier transform (FFT) technique are used to reduce the necessary memory and CPU time.
本文提出了一种考虑槽导体有效宽度时转子谐波漏抗的分析方法，即傅立叶变换分析法。
This paper puts forward an analysis method of rotor harmonic leakage reactance in consideration of conductor effective width in slots, ie, Fourier analysis.
文中研究基于向量机的傅立叶变换红外光谱中药材真伪快速鉴别方法。
It researches the SVM Fourier transform infrared spectrometry for Chinese traditional medicine authentication.
用快速离散傅立叶变换(FFT)的方法确定均衡器的初始抽头系数，它区别于目前常用的迭代算法。
Employing the Fast Fourier Transform Algorithm (FFT) to determine the initial tap coefficients of equalizers is fundamentally different from using the current iteration method.
基于边界的傅立叶变换是一种重要的形状描述方法，其只利用了图像的边界信息，而忽略了图像的区域信息。
The edge Fourier transform is an important shape descriptor, but it makes use of only the image edge information ignoring the image region information.
基于边界的傅立叶变换是一种重要的形状描述方法，其只利用了图像的边界信息，而忽略了图像的区域信息。
The edge Fourier transform is an important shape descriptor, but it makes use of only the image edge information ignoring the image region information.
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