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Questions tagged [noise-generator]

Anything related to software noise generators and noise generation techniques. Noise is a general term to indicate a signal with (pseudo)random characteristics. Noise generators are used, for example, in telecommunication or electronic systems simulation, in computer games and in virtual reality applications.

Anything related to software noise generators and noise generation techniques. Noise is a general term to indicate a signal with (pseudo)random characteristics. Noise generators are used, for example, in telecommunication or electronic systems simulation (to simulate actual noise sources), in computer games (to randomize some aspects of the game experience) and in virtual reality applications (to enhance the realism of the scenes or of the sounds by reproducing the random, noisy aspects of reality).

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Any Simplex Noise Tutorials or Resources?

I want to create a terrain-like 3D noise generator and after doing some research I came to the conclusion that Simplex Noise is by far the best type of noise to do this. I find the name quite misleading though as I have a lot of trouble finding…
Jeroen
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How to simulate pink noise in R

I know that white noise can be achieved by treating the output of rnorm() as a timeseries. Any suggestions on how to simulate pink noise?
Mike Lawrence
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Generating colors of noise in Java

I would like to create a colored noise generator using Java that will be able to generate all of the colors defined in this article: http://en.wikipedia.org/wiki/Colors_of_noise Starting with the simplest one, White Noise, how would I generate the…
Doronz
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Noise generation: 'Room Noise'

Last weeks I was developing a world generator (for a Minecraft mod). However, I wasn't looking for just Perlin noise, but rather something based on cell noise. I want to generate a sort of underground lab, existing of several rooms of different…
Samū
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Faster method for creating spatially correlated noise?

In my current project, I am interested in calculating spatially correlated noise for a large model grid. The noise should be strongly correlated over short distances, and uncorrelated over large distances. My current approach uses multivariate…
J.Galt
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Seeded 3D white noise random generator with random access

I have almost zero experience with random generators. I have used the standard rand functions in C and I have used perlin noise. But now, I need a cube of resolution NxNxN (with N maybe 1e6 or bigger) filled with white noise (no perlin smoothness or…
scippie
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What is the range of improved Perlin noise?

I'm trying to find the theoretical output range of improved Perlin noise for 1, 2 and 3 dimensions. I'm aware of existing answers to this question, but they don't seem to accord with my practical findings. If n is the number of dimensions then…
Pepijn Schmitz
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Perlin noise interpolation

I've been writing a Perlin noise generator in F# using this and this, and have been successful up until the interpolation part of the algorithm. This is the working code so far (you probably don't need to read the next 2 code chunks as they're just…
Jwosty
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c# faster way of setting pixel colours

I've picked up a project that creates a noise map using setPixel(). The majority of the runtime of this application is spent within the setPixel() function so I was looking to increase the speed at which the function executes. I have done some…
EMoore
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Why does my Perlin Noise Generator make this squiggly pattern?

I've started learning about perlin noise generation, and I wanted to try to make my own generator in JavaScript. To get me started, I've been following along with this youtube tutorial. to try and copy their basic implementation. I've also been…
MWinstead
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Good Perlin noise resources/implementation?

Are there any good resources out there detailing Perlin noise generation? I understand that most languages have noise generating libraries available, but I'm interested in creating my own for fun/experience. I've already looked at this, which seems…
Nathan Weir
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Program generates the same 'random' number with each execution

I'm trying to write a simple ASCII style game with randomly generated world for Android terminal using c4droid IDE. It has C++ support and basically I'm generating array[width][height] tiles using the rule rand()%2 - 1 creates walkable tile, 0 is…
wirher
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Which value should I choose as standard deviation for Gaussian Noise in my data?

I am adding Gaussian Noise using the Keras GaussianNoise layer to my data to corrupt it to prevent overfitting. I have analysed my data and the mean of all values is 7624 and the standard deviation is 2591. I have attached a picture of the…
Harsh Motwani
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How to generate a pink noise image?

I am trying to replicate "Frequency Synthesis of Landscapes" by P. Bourke in Python. I thought it would be a simple import numpy as np from scipy.fft import fft2, ifft2 whitenoise = np.random.uniform(0,1,(256,256,3)) fouriertransformed =…
berndibus
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How can generate impulse as outliers on periodic or sequenced-based data for doing experiments via outliers detection methods?

I want to carry out some experiments on some time-series data with the KM approach has been suggested in this paper. The problem is I don't access the data in the paper but I have similar type data which has no outliers and I need to generate some…
Mario
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