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Description: 奈奎斯特成型滤波及带通滤波器
其中有很好的算法，能看眼图-Nyquist shaping filter and bandpass filter of which a good algorithm, can see eye-diagram
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Size: 3072 |
Author: 李继泉 |
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Description: 绘制系统带有Gershgorin带的逆Nyquist图-gershgorin mapping system with the inverse Nyquist zone map
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Size: 1024 |
Author: 白小虎 |
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Description: 1．了解数字信号处理系统的一般构成；
2．掌握奈奎斯特抽样定理。
为方便实现，实验中更换了一种表现形式，即抽样频率固定（10KHz），通过改变输入模拟信号的频率来展示低通抽样定理。我们可以通过研究抽样频率和模拟信号最高频率分量的频率之间的关系，来验证低通抽样定理。-1. Understanding digital signal processing system of the general composition; 2. Master Nyquist Sampling Theorem. To facilitate the realization of the experiment to replace a form of expression, that is, fixed sampling frequency (10KHz). By changing the input signal frequency to demonstrate low-pass sampling theorem. We can, through research and sampling frequency of the highest frequency analog signal frequency components of the relationship between to verify low-pass sampling theorem.
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Size: 3072 |
Author: 深蓝 |
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Description: DFT进行频谱分析时的三种现象
1、混叠：对连续信号采样，要求连续信号是带限的，采样频率要足够高。Fs应满足Nyquist采样定理才不产生混叠。
采样前加低通滤波器防混叠
2、频谱泄漏：DFT对时域信号进行了截断（相当于采样信号乘了一个窗函数），时域的乘积相当于频域卷积，改变了原信号频谱。
改用其他窗函数（非矩形）改善泄漏。
3、栅栏现象：DFT 只给出了频谱在采样点上的取值，采样点间的频谱内容丢失。-DFT spectrum analysis of a three phenomena, aliasing : continuous signal sampling, requiring continuous signal is band-limited, the sampling frequency should be high enough. Fs meet the Nyquist Sampling Theorem would not have aliasing. Sampling former low-pass filter plus anti-aliasing 2, spectrum leakage : DFT right time domain signal a disconnect (equivalent to a sampling signal by a window function). time domain is equivalent to the product of frequency-domain convolution, changes in the spectrum of the original signal. Window functions to switch to other (non-rectangular) to improve leakage. 3, fenced phenomenon : DFT spectrum is given only at the sampling point value, sampling points of the spectrum as lost.
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Author: qinyang |
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Description: 这是基于5402DSP的C语言程序，实现奈奎斯特采样，对初学者十分有帮助-This is based on the C language program 5402DSP to achieve Nyquist sampling, very helpful for beginners
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Size: 11264 |
Author: tangjia |
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Description: An Introduction To Compressive Sampling-Conventional approaches to sampling signals or images follow Shannon’s celebrated theorem: the sampling rate must be at least twice the maximum frequency present in the signal (the so-called Nyquist rate). In fact, this
principle underlies nearly all signal acquisition protocols used in consumer
audio and visual electronics, medical imaging devices, radio receivers, and
so on. (For some signals, such as images that are not naturally bandlimited, the sampling
rate is dictated not by the Shannon theorem but by the desired temporal or spatial
resolution. However, it is common in such systems to use an antialiasing low-pass filter
to bandlimit the signal before sampling, and so the Shannon theorem plays an implicit
role.) In the field of data conversion, for example, standard analog-to-digital converter
(ADC) technology implements the usual quantized Shannon representation: the signal is
uniformly sampled at or above the Nyquist rate
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Author: yjsdqq |
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Description: Generalized Nyquist diagram for stability analysis of linear time invariant systems (Nyquist on arbitrary contour)
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Size: 1024 |
Author: Anry |
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Description: 亚奈奎斯特采样在多频带模拟信号中的应用--用于降低采样率和计算量-Sub-Nyquist sampling analog signals in a multi-band applications- used to reduce the sampling rate and computation
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Description: 改变原始wav音频信号的抽样频率，并且显示处理前后声音信号的频谱.有助于帮助大家理解奈圭斯特抽样定理。-Change the original wav audio signal sampling frequency, and shows the spectrum of sound signal before and after treatment. Helps to help you understand the Nyquist sampling theorem.
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Size: 143360 |
Author: leo |
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Description: 通过matlab实现Nyquist滤波器-realization of Nyquist filter
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Size: 1024 |
Author: 袁文铎 |
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Description: MATLAB m-file for plotting the inverse Nyquist array of a 3 input, 3 output system (needs control and multivariable frequency domain toolboxes).
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Size: 2048 |
Author: mmaa |
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Description: 数字通信中的平方根Nyquist滤波器设计，含说明文件和matlab仿真代码-The square root Nyquist digital communication filter design, including documentation and matlab simulation code
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Size: 2281472 |
Author: zzm |
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Description: 升余弦滚降滤波器，主要完成 Generate coefficients of Nyquist filter-Raised Cosine filter, mainly to complete Generate coefficients of Nyquist filter
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Size: 1024 |
Author: wangsha |
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Description: Nyquist and loci simulate in multivariable system control.
matlab m-file code
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Size: 2048 |
Author: hasan |
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Description: 基于奈奎斯特稳定性分析的分散PI控制器设计 其中包括：列主对角占优定理、盖尔圆环定理、 对角优势系统的稳定性仅仅取决于其传递函数的主对角元素等等
-Nyquist stability analysis based on the decentralized PI controller design, including: the column diagonal dominance theorem, Gail circle theorem, diagonal dominant system, the stability of the transfer function only depends on its main diagonal elements, etc. etc.
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Author: 李牧 |
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Description: A Nyquist plot is a parametric plot of a transfer function used in automatic control and signal processing. The most common use of Nyquist plots is for assessing the stability of a system with feedback. In Cartesian coordinates, the real part of the transfer function is plotted on the X axis. The imaginary part is plotted on the Y axis. The frequency is swept as a parameter. Alternatively, in polar coordinates, the gain of the transfer function is plotted as the radial coordinate, while the phase of the transfer function is plotted as the angular coordinate. The Nyquist plot is named after Harry Nyquist, a former engineer at Bell Laboratories.
This software is a simple vba implementation destinated to the control students.-A Nyquist plot is a parametric plot of a transfer function used in automatic control and signal processing. The most common use of Nyquist plots is for assessing the stability of a system with feedback. In Cartesian coordinates, the real part of the transfer function is plotted on the X axis. The imaginary part is plotted on the Y axis. The frequency is swept as a parameter. Alternatively, in polar coordinates, the gain of the transfer function is plotted as the radial coordinate, while the phase of the transfer function is plotted as the angular coordinate. The Nyquist plot is named after Harry Nyquist, a former engineer at Bell Laboratories.
This software is a simple vba implementation destinated to the control students.
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Author: Mauricio |
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Description: Nyquist diagram for compensation of control systems engineering.
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Author: Cesar1574 |
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Description: 只是快速阅读Harry Nyquist于1924年发表的《贝尔系统技术杂志》经典文章(参考文献1)，
并不足以了解以其名字命名的该项准则的真正意义。当时，Nyquist正致力于研究通过带
宽受限的通道传输电报信号。处理数据采样系统时，必须详细了解现代对奈奎斯特准则的
全新诠释。本指南将以通俗易懂的方式介绍奈奎斯特准则如何运用于基带采样、欠采样和
过采样应用。-Just a quick reading Harry Nyquist classic " Bell System Technical Journal article published in 1924 (Reference 1), is not sufficient to understand the true meaning of its named after the guidelines. At that time, Nyquist is dedicated to the study by bandwidth-limited channel transmission telegraph signal. Processing data sampling system must learn more about modern new interpretation of the Nyquist criterion. This guide will be user-friendly way to introduce the Nyquist criterion used in baseband sampling, under-sampling and sampling applications.
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Size: 363520 |
Author: 边城 |
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Description: Stability criteria Nyquist plot in Matlab.
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Size: 2048 |
Author: mehmet |
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Description: 基于LabVIEW设计的绘制任意系统的Nyquist曲线和Bode图，适合学习控制理论的同学巩固和复习理论知识。-Nyquist and Bode diagram based on LabVIEW curve design draw any system for learning control theory to consolidate and review the students theoretical knowledge.
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Size: 14336 |
Author: 钱敏 |
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