Linear filters | Network synthesis filters
In electronics and signal processing, a Bessel filter is a type of analog linear filter with a maximally flat group/phase delay (maximally linear phase response), which preserves the wave shape of filtered signals in the passband. Bessel filters are often used in audio crossover systems. The filter's name is a reference to German mathematician Friedrich Bessel (1784–1846), who developed the mathematical theory on which the filter is based. The filters are also called Bessel–Thomson filters in recognition of W. E. Thomson, who worked out how to apply Bessel functions to filter design in 1949. The Bessel filter is very similar to the Gaussian filter, and tends towards the same shape as filter order increases. While the time-domain step response of the Gaussian filter has zero overshoot, the Bessel filter has a small amount of overshoot, but still much less than other common frequency-domain filters, such as Butterworth filters. It has been noted that the impulse response of Bessel–Thomson filters tends towards a Gaussian as the order of the filter is increased. Compared to finite-order approximations of the Gaussian filter, the Bessel filter has better shaping factor, flatter phase delay, and flatter group delay than a Gaussian of the same order, although the Gaussian has lower time delay and zero overshoot. (Wikipedia).
From playlist filter (less comfortable)
What is a Bézier curve? Programmers use them everyday for graphic design, animation timing, SVG, and more. #shorts #animation #programming Animated Bézier https://www.jasondavies.com/animated-bezier/
From playlist CS101
Introduction to Frequency Selective Filtering
http://AllSignalProcessing.com for free e-book on frequency relationships and more great signal processing content, including concept/screenshot files, quizzes, MATLAB and data files. Separation of signals based on frequency content using lowpass, highpass, bandpass, etc filters. Filter g
From playlist Introduction to Filter Design
Project IV: Bessel Functions and their Zeros | Lecture 47 | Numerical Methods for Engineers
MATLAB project to compute the zeros of the Bessel functions. Join me on Coursera: https://www.coursera.org/learn/numerical-methods-engineers Lecture notes at http://www.math.ust.hk/~machas/numerical-methods-for-engineers.pdf Subscribe to my channel: http://www.youtube.com/user/jchasnov
From playlist Numerical Methods for Engineers
Coding a Bezier curve from scratch!
This topic has been much requested, so I finally decided to make a video about it. Bezier curves are used throughout computer graphics and in engineering in general. Most software packages implement curves like these out of the box, but if you want to really get the most out of them then
From playlist Tools
Special Topics - The Kalman Filter (1 of 55) What is a Kalman Filter?
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain what is Kalman filter and how is it used. Next video in this series can be seen at: https://youtu.be/tk3OJjKTDnQ
From playlist SPECIAL TOPICS 1 - THE KALMAN FILTER
Lec 26 | MIT 2.71 Optics, Spring 2009
Lecture 26: Depth of focus and field; polarization; wave plates Instructor: George Barbastathis, Colin Sheppard, Se Baek Oh View the complete course: http://ocw.mit.edu/2-71S09 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http:/
From playlist MIT 2.71 Optics, Spring 2009
Numerical Aperture in Fourier Optics
https://www.patreon.com/edmundsj If you want to see more of these videos, or would like to say thanks for this one, the best way you can do that is by becoming a patron - see the link above :). And a huge thank you to all my existing patrons - you make these videos possible. In this video
From playlist Fourier Optics
Lecture 27 | The Fourier Transforms and its Applications
Lecture by Professor Brad Osgood for the Electrical Engineering course, The Fourier Transforms and its Applications (EE 261). Professor Osgood continues his discussion on higher dimensions and the outer reaches while helping the students understand higher dimensions Fourier Transforms.
From playlist Lecture Collection | The Fourier Transforms and Its Applications
Bézier curves - how do they do? They're used for animation, text rendering, and all sorts of curved shapes! But how do they actually work? well, like, that's what the video is about, so, watch it to find out etc!! • Lots of love to 💛 Jazz "queenjazz" Mickle for making the music ❱ https:
From playlist Summer of Math Exposition Youtube Videos
Introduction to Resurgence, Trans-series and Non-perturbative Physics III by Gerald Dunne
Nonperturbative and Numerical Approaches to Quantum Gravity, String Theory and Holography DATE:27 January 2018 to 03 February 2018 VENUE:Ramanujan Lecture Hall, ICTS Bangalore The program "Nonperturbative and Numerical Approaches to Quantum Gravity, String Theory and Holography" aims to
From playlist Nonperturbative and Numerical Approaches to Quantum Gravity, String Theory and Holography
Ext-analogues of Branching laws – Dipendra Prasad – ICM2018
Lie Theory and Generalizations Invited Lecture 7.5 Ext-analogues of Branching laws Dipendra Prasad Abstract: We consider the Ext-analogues of branching laws for representations of a group to its subgroups in the context of p-adic groups. ICM 2018 – International Congress of Mathematic
From playlist Lie Theory and Generalizations
[Lesson 26] QED Prerequisites Scattering 3: The radial wave function of a free particle
In this lesson we explore the spherical Bessel, Neuman, and Hankel functions which are all critical to our understanding of scattering theory. We will just accept the standard solutions, and explore the properties of the functions, except for the most important property: their asymptotic f
From playlist QED- Prerequisite Topics
You'd think I'd have better things to do with my time...
From playlist My Other Videos
Completeness and Orthogonality
A discussion of the properties of Completeness and Orthogonality of special functions, such as Legendre Polynomials and Bessel functions.
From playlist Mathematical Physics II Uploads
[Lesson 28] QED Prerequisites Scattering 5
In this lesson we discover the integral representation of the Hankel function. We are doing this in preparation of executing the Method of Steepest Descents/Saddle Point Method to determine its asymptotic form. Please consider supporting this channel on Patreon: https://www.patreon.com/X
From playlist QED- Prerequisite Topics
Laplace Eigenvalues on the Unit Disk: A Complete Derivation
https://bit.ly/PavelPatreon https://lem.ma/LA - Linear Algebra on Lemma http://bit.ly/ITCYTNew - Dr. Grinfeld's Tensor Calculus textbook https://lem.ma/prep - Complete SAT Math Prep
From playlist Partial Differential Equations
Coulomb Gas, Integrability and Painleve's Equations: shorts talks
1. Alfano Giusi: Log-gases with two-particle interactions and communication speed of multiantenna wireless systems. 2. Arista Jonas: Loop-erased walks and random matrices. 3. Benassi Constanza: Dispersive Shock States in Matrix Models. 4. Celsus Andrew: Supercritical Regime for the Kissing
From playlist Jean-Morlet Chair - Grava/Bufetov
reaLD 3D glasses filter with a linear polarising filter
This is for a post on my blog: http://blog.stevemould.com
From playlist Everything in chronological order