Talk:Gaussian noise

Physics Low‑importance

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I have an image to upload

I've created an image to upload, but I cannot do so until I'm a confirmed user. If anyone would like to upload it for me, I'd be happy to upload it to free storage somewhere. It's just an image of a fence that I took, and then added Gaussian noise to. It'd be better than the boring normal distribution picture that's up now. Ben.appl (talk) 21:18, 8 June 2010 (UTC)[reply]

Yes, I would like to see a spectrum of such a noise. Hwo does it look like? Where is the difference to white spectrum? 80.138.165.27 (talk) 23:12, 1 December 2022 (UTC)[reply]

Gaussian noise in digital images

The main source for gaussian noise in digital image is photon shot noise, not sensor noise. — Preceding unsigned comment added by 62.142.117.62 (talk) 14:42, 20 January 2014 (UTC)[reply]

Not sure if this is right. With sufficient lighing we do not have an photon noise during integration phase. It is mostly electron noise then. 80.138.165.27 (talk) 23:12, 1 December 2022 (UTC)[reply]

White Gaussian noise,

In the introduction, it says "A special case is White Gaussian noise, in which the values at any pair of times are identically distributed and statistically independent." Do they not also need to be independent of frequency? Strasburger (talk) 16:04, 6 May 2020 (UTC)[reply]

Merge with and re-direct to Normal Distribution

This page seems to only contain application references to fields which call the normally distributed random variables Gaussian Noise. This should redirect to the Normal distribution page. https://wiki.riteme.site/wiki/Normal_distribution — Preceding unsigned comment added by 155.190.19.7 (talk) 13:45, 1 March 2022 (UTC)[reply]

Gaussian noise is a term from signal processing theory denoting a kind of signal noise with a particular probability density function. “Statistical noise” does not seem to be a properly defined term; the Wikipedia page “Statistical noise” might be removed some day. I have removed the link to that page and used the links in the previous sentence instead.

The article might well be improved in yet to specify ways but merging it to the realm of general statistics does not seem appropriate IMO. Strasburger (talk) 17:17, 1 March 2022 (UTC)[reply]

"White Gaussian noise" listed at Redirects for discussion

The redirect White Gaussian noise has been listed at redirects for discussion to determine whether its use and function meets the redirect guidelines. Readers of this page are welcome to comment on this redirect at Wikipedia:Redirects for discussion/Log/2023 July 5 § White Gaussian noise until a consensus is reached. 1234qwer 1234qwer 4 20:50, 5 July 2023 (UTC)[reply]

Incomplete definition

This article defined Gaussian noise as

a kind of signal noise that has a probability density function (pdf) equal to that of the normal distribution (which is also known as the Gaussian distribution). In other words, the values that the noise can take are Gaussian-distributed.

That fails to say how this signal varies over time, and that omission makes the definition incomprehensible. Michael Hardy (talk) 12:44, 8 July 2023 (UTC) Michael Hardy (talk) 12:44, 8 July 2023 (UTC)[reply]

It's even more confused -- the quoted definition is about 2d, static noise. The sentence following that in the article, and your remark, are about time series, (1D?). (Perhaps I misunderstand.) Strasburger (talk) 09:36, 9 July 2023 (UTC)[reply]