It includes: stimulus of signal, analysis of signal spectrum, design of filter and PWM signal.
其中包括：激励信号的产生，信号的频谱分析，滤波器设计，PWM信号的产生等。
Following discussions on the principle of Doppler, the classification of the deformation, and analysis of signal spectrum, a continuous and rapid method for the measurement is presented.
通过对超声多普勒原理、路面变形的分类研究及测试信号谱分析的详细讨论和研究，给出了一种连续、快速检测沥青路面变形情况的方法。
The whole system is composed of both virtual signal generator and spectrum analysis.
整个系统由虚拟信号发生器模块和频谱分析模块两部分组成。
The entire system is a virtual signal generator and spectrum analysis module module composed of two parts.
整个系统由虚拟信号发生器模块和频谱分析模块两部分组成。
These new capabilities extend the analysis power of Agilent's signal and spectrum analyzers, enabling them to address even the most difficult application challenges.
这些新性能扩展了安捷伦的信号和光谱分析仪的分析能力，使它们能满足甚至是更难的应用挑战。
The paper uses MATLAB to simulate ASK, FSK, PSK modulation of digital signal and spectrum analysis.
运用MATLAB语言模拟实现了数字信号的ASK、FSK、PSK调制与频谱分析。
Spectrum analysis for vortex signal processing was discussed on the basis of simulating and analyzing the effect of sampling in non complete periods on spectrum arithmetic.
在仿真分析非整周期采样对谱分析法影响的基础上，对基于谱分析的实际涡街流量信号处理方法进行了有益地探讨。
Power spectrum analysis is always used in spectrum analysis of cavitation noise. However, it is obviously unfit for research on the transient signal such as cavitation noise.
空化噪声的谱分析一般采用功率谱分析，而功率谱分析在研究空化噪声这种具有很强突变性的信号具有明显的缺陷。
This paper introduces the designing way and the programming methods of the CAI software for periodic signal spectrum analysis and demo .
介绍了“周期信号频谱分析演示CAI软件”的设计思路和编程方法。
The methods of time frequency analysis include linear, quadratic and adaptive methods. They provide effective tools for analyzing signal time varying spectrum in time frequency plane.
时频分析方法分为线性、二次型和自适应等多种方法，它们提供了在时频二维平面上，分析信号时变功率谱的有效手段。
In this paper, by using DFT filter bank and ZFFT, we present an algorithm of spectrum analysis for the wide band signal.
本文利用DF T滤波器组、ZFFT，提出了一种宽带信号的实时谱分析方法。
Signal sequence DFT is a signal frequency spectrum sampling sets, therefore DFT can be directly used for analysis of signals frequency spectrum.
信号序列的DFT本身就是信号频谱的采样集，所以DFT可直接用于分析信号的频谱。
Design the signal pre-treatment model and make use of such methods as Fourier transfer and wavelet analysis, etc to perform filtering treatment for spectrum signals.
设计信号预处理模块，采用傅里叶变换、小波分析等方法，对光谱信号进行滤波处理。
An estimation method of fingerprint ridge distance based on ridge orientation projection signal spectrum analysis is proposed to overcome some shortages in the present literatures.
提出了一种基于纹线方向投影信号谱分析的指纹纹线间距估计方法。
By use of the method, the vibration signal in working state is measured and the spectrum analysis of the gear can be taken, so that the cause of the gear breakdown is found out.
该方法是通过对测取齿轮工况下的振动信号进行频谱分析，从而找出齿轮产生故障的原因。
Therefore, it is an important way to analysis the signal spectrum and determine the type of bearing defects in the study of bearing vibration signals for fault diagnosis.
因此，在对轴承振动信号进行故障诊断的研究中，对信号进行频谱分析，判断轴承缺陷的类型是一种重要方法。
The fundamental principle of direct digital synthesis (DDS) is introduced in this paper. Based on signal analysis, the ideal output spectrum characteristic of DDS is analyzed briefly.
对DDS基本原理进行了简要介绍，利用信号分析的方法对DDS理想输出进行频谱分析。
The spectrum of short time signal and part signal can be detected from vehicle vibrational signal which is difficult to be detected by common analysis method.
把路面激励信号从车辆整体振动中分离出来；同时从频域把短时或局部信号的谱检测出来，实现了常规分析方法所不能达到的功能。
Traditional speech signal processing is based on FFT power spectral analysis, in noisy condition, the spectrum of noise and speech signal are processed in the same way.
传统语音信号谱特征的提取是基于FFT 的能谱分析方法，在噪音环境情况下，对噪音的频谱成分与语音信号的频谱成分的处理采用“平均主义”的原则。
The ADC parameters are selected according to the aspects of the required amplitude revolution to display signal, of the required quantify precision in inserting and spectrum analysis.
从波形显示所要求的幅度分辨率、插值显示和频谱分析对量化精度的要求等方面进行分析，确定ADC参数；
This signal spectrum analysis system realizes the data acquisition of analog signal, and the processing of the signal through the computer.
该系统实现了对模拟信号的采集，并通过计算机完成对信号的分析处理。
Based on the analysis, a new method to detect carrier frequency of FSK signal named time-domain joint and modern power spectrum estimation is put forward.
对电力远动通道FSK信号进行了时域和频域分析，在此基础上提出了一种新的FSK信号载波频率测量方法—时域拼接结合现代功率谱估计的方法。
One of the spectrum analysis methods suitable for speed information analysis in the noise radar signal is also introduced.
文章还介绍了一种适合于分析噪声雷达信号中目标速度信息的谱分析方法。
Result of the experiment proves that the processor implements the function of spectrum analysis at a high speed and satisfies the request of commonly real-time signal processing.
实验结果表明此处理器高速地实现了频谱分析功能，满足实时信号处理要求。
Spectrum analysis is the most important branch in radar signal processing and significant of radar target classification and feature detection.
谱分析是雷达信号处理的重要组成部分，对目标分类、特征检测均有重要意义。
Unlike spectrum analysis, without multiplication, the processing is made at high speed, its results have no connection with power of the signal.
与频谱分析法相比，它不需要进行乘法运算，因而处理速度快，分析结果与信号能量无关。
It can be taken as a kind of discrete signal and do spectrum analysis by discrete Fourier transform.
在计算生物学中，常采用离散傅立叶变换进行频谱分析。
Based on the analysis of the sensor signal, the frequency spectrum is analyzed with SD-380 dynamic analyzer.
在分析传感器信号的基础上，用SD- 380动态分析仪对信号作了频谱分析。
Venation wave spectrum analysis finds out shape-structure change of mid-frequency signal fluctuation.
脉络波谱图分析查明了中范围（频率）信号波动的形态结构变化。
Though examples of common signal and sine signal, by the frequency spectrum graph and theoretical analysis, the minimum sample rate of the sampling theorem is made clear.
以一般信号和正弦信号为例，通过理论分析和频谱图示意，对抽样定理中最低抽样率的取值进行了明确的说明。
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