OpenSimplex noise is an n-dimensional (up to 4D) gradient noise function that was developed in order to overcome the patent-related issues surrounding simplex noise, while likewise avoiding the visually-significant directional artifacts characteristic of Perlin noise. The algorithm shares numerous similarities with simplex noise, but has two primary differences: * Whereas simplex noise starts with a hypercubic honeycomb and squashes it down the main diagonal in order to form its grid structure, OpenSimplex noise instead swaps the skew and inverse-skew factors and uses a stretched hypercubic honeycomb. The stretched hypercubic honeycomb becomes a simplectic honeycomb after subdivision. This means that 2D Simplex and 2D OpenSimplex both use different orientations of the triangular tiling, but whereas 3D Simplex uses the tetragonal disphenoid honeycomb, 3D OpenSimplex uses the tetrahedral-octahedral honeycomb. * OpenSimplex noise uses a larger kernel size than simplex noise. The result is a smoother appearance at the cost of performance, as additional vertices need to be determined and factored into each evaluation. OpenSimplex has a variant called "SuperSimplex" (or OpenSimplex2S), which is visually smoother. "OpenSimplex2F" is identical to the original SuperSimplex. (Wikipedia).
Coding Challenge #137: 4D OpenSimplex Noise Loop
It's groundhog day on the coding train as I demonstrate another noise loop GIF technique, this time with 4D Open Simple Noise in Processing (Java). 💻 Code: https://thecodingtrain.com/CodingChallenges/137-4d-opensimplex-noise-loop Links discussed in this video: 🔗 OpenSimplexNoise.java by
From playlist 13: What is Perlin Noise?
I.7 : What is OpenSimplex Noise?
Simplex Noise (2001) is an improvement on "classic" Perlin noise (1983). I discuss a bit of the history of noise algorithms and show how to use the Java source code for Open Simplex Noise in Processing. 🎥Next Video: Random Walker Coding Challenge: https://youtu.be/l__fEY1xanY Links discu
From playlist 13: What is Perlin Noise?
Coding in the Cabana 5: Marching Squares
In the fifth episode of Coding in the Cabana, Gloria Pickle and I investigate the Marching Squares algorithm and apply it to Open Simplex Noise in Processing. 💻 https://thecodingtrain.com/challenges/coding-in-the-cabana/005-marching-squares.html 🔗 Marching cubes: A high resolution 3D sur
From playlist Coding in the Cabana
Welcome again to Nature of Code! Here, I give a quick overview of the "Introduction" section of The Nature of Code. 🔗https://thecodingtrain.com/learning/nature-of-code/0.1-introduction.html 📕https://natureofcode.com/book/introduction/ Links discussed in this video: 🎥 Perlin Noise and p5.
From playlist The Nature of Code 2
Live Stream #170: 4D OpenSimplexNoise Loops and ES6 Inheritance
In this live stream: Inheritance and polymorphism in ES6 JavaScript, and OpenSimplex Noise in Processing(Java) 💻 https://thecodingtrain.com/CodingChallenges/137-4d-opensimplex-noise-loop 🔗 Perlin Noise: https://en.wikipedia.org/wiki/Perlin_noise 🔗 http://web.archive.org/web/2016053012423
From playlist Live Stream Archive
Coding in the Cabana 1: Maurer Rose
Coding in the Cabana is a new series on The Coding Train where I attempt challenges from my garden cabana in Brooklyn, NY. In this pilot episode, I code a visualization of the Maurer Rose patter in JavaScript (p5.js). 💻 https://editor.p5js.org/codingtrain/sketches/qa7RiptE9 🔗 Maurer Rose
From playlist Coding in the Cabana
Coding Challenge #135: Making a GIF Loop in Processing
In this tutorial, I demonstrate how to render a sketch into a perfect, looping GIF with Processing (Java). Code: https://thecodingtrain.com/challenges/135-making-a-gif-loop-in-processing 🕹️ p5.js Web Editor Sketch: https://editor.p5js.org/codingtrain/sketches/Hk6RTHBCl 🎥 Previous video:
From playlist Coding Challenges
One of the loudest underwater sounds is made by an animal you wouldn’t expect
Here’s a hint: It has something to do with mating Keep reading: http://scim.ag/2CE1DuQ
From playlist Animals
Resonance and the Sounds of Music
Resonance and the Sounds of Music
From playlist 1 hour Special Talks
In this video i demonstrate sound waves interference and standing waves from loudspeaker used sound sensor. The frequency on loudspeaker is about 5500Hz. Enjoy!!!
From playlist WAVES
Stuff They Don't Want You To Know - The Hum
In certain parts of the world, groups of people from all walks of life claim to hear a continuous hum. Yet not everyone can hear this noise, and there's no hard proof of its existence. Tune in and learn more about the mysterious hum in this episode. http://howstuffworks.com http://faceboo
From playlist Stuff They Don't Want You To Know
Yes. I make mistakes ... rarely. http://www.flippingphysics.com
From playlist Miscellaneous
Show Me Some Science! Speed Of Sound
Sound is a wave which travels through the air at about 330 m/s. The Little Shop of Physics Crew dances to the music together. When spread out along the track, it takes about a third of a second for the sound to travel from the first person to the last. The crew is blindfolded, so there are
From playlist Show Me Some Science!
MagLab User Summer School: The Physics of Noise and Musings of Experimental Errors
This video was recorded in 2016 at the National MagLab’s annual User Summer School, where early-career scientists learn from lab experts best practices for conducting experiments at the lab. For more information, please visit https://nationalmaglab.org/user-summer-school
From playlist User Summer School Talks
Programming Perlin-like Noise (C++)
NOTE! This is an approximation of Perlin Noise! :-S Noise is at the root of most procedurally generated content. However, just choosing random numbers alone is insufficient. Perlin noise adds local coherence over different scales to generate natural looking formations, which can be furthe
From playlist Interesting Programming
Jonathan defines what white noise actually is and how it's used to mask other annoying sounds. Learn more at HowStuffWorks.com: http://science.howstuffworks.com/question47.htm Share on Facebook: http://goo.gl/n7YNrZ Share on Twitter: http://goo.gl/Fq9InS Subscribe: http://goo.gl/ZYI7Gt V
From playlist Episodes hosted by Jonathan
EEVblog #528 - Opamp Input Noise Voltage Tutorial
Dave explains one of the most confusing parameters in an opamp datasheet, Input Noise Voltage Density, that mysterious nV/RootHz figure. Along with different types of opamp noise, corner noise frequency, and how to calculate output noise spectral density. And how to use a Dynamic Signal An
From playlist Opamps - Tutorials & Practicals