Talk:Value noise

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Just in case anyone is wondering why I claim that the page is mislabeled, the description of the noise types is in the sourced book, and the noise on the web page matches the description of the Value noise more. SiegeLord (talk) 23:14, 11 August 2008 (UTC)[reply]

Octaves link is pointing to the wrong place. 83.183.141.239 (talk) 15:43, 2 November 2009 (UTC)[reply]

Next time be bold and fix it yourself ;). SiegeLord (talk) 22:45, 3 November 2009 (UTC)[reply]

History

Is there any info on who invented this? Did it come before or after Perlin's gradient noise? — Preceding unsigned comment added by 104.35.102.176 (talk) 08:12, 10 May 2016 (UTC)[reply]

I wouldn't be surprised if this technique arose from multiple sources, since practically speaking it's faster and less analytically complicated. It's the "naive" approach to noise as far as I'm aware. I suppose someone could scour the internet and publications for the earliest documented instance... this paper references "value noise" without any citation (https://www.cs.utah.edu/~aek/research/hwnoise.pdf) and then reference's Lewis's sparse convolution noise as an example, which itself doesn't appear to reference anything (https://ai2-s2-pdfs.s3.amazonaws.com/37d4/295a6fe32b5d89217b8fbc023d8185b0cf50.pdf). Honestly value noise seems obvious (interpolating by some method between regularly spaced, sampled noise values doesn't seem like an invention), but maybe it only seems so in retrospect. 68.63.108.194 (talk) 18:29, 23 November 2016 (UTC)[reply]

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Verified the link. Made some changes to the title of the link using the original title of the article cited, while retaining that explanation surrounding the confusion of the two terms - DutchTreat (talk) 13:01, 16 July 2016 (UTC)[reply]

About Perlin and Simplex noise...

I feel like they shouldn't be mentioned a second time, as it might get confusing for some users. Personally, when I first read the article, I thought it said that perlin noise and simplex noise were examples of value noise, especially since they were the only concrete examples anywhere in the article. Alex2739 (talk) 20:31, 29 January 2025 (UTC)[reply]

Uses in audio

Value noise is common and very old in digital audio, in the form of 1D value noise, but the term is usually only used in graphics circles. Problem is, because the terminology to describe it for audio uses is often different even when the definition matches, most examples that could be pointed to can't be cited as it would be original research by Wikipedia standards.

For example, various old video game consoles such as the NES have sound chips (PSGs) that can produce noise along with some other waveforms, and have some kind of pitch control for the noise. The noise is a form of value noise, as you have the lattice of points spaced using the frequency control, and the values of the points are random, and a line is drawn between each adjacent point pair. (Often the values are binary random, though not always, and the lines between them may be straight horizontal lines, not lerp or curved ones, with simple sound chips.) But if you don't find acceptable sources naming these things as value noise specifically, I guess it can't be covered.

I did write about this, in pages about my own open source project[1], but it's my own writing (and I have the authority of a hobbyist only) so I wouldn't presume it can be used a source. JoelKP (talk) 04:06, 1 February 2025 (UTC)[reply]