Talk:Noise (video)

This is probably called "Lluvia" in Argentina[edit]

I'm from Buenos Aires, Argentina and i don't know if it is only from my city but we call "lluvia" (rain) to this noise. i have never heard it called as "nieve" (snow) before. --191.83.185.110 (talk) 20:02, 18 November 2020 (UTC)[reply]

I append a link to the Argentina's DirecTV page where an image problem section is titled as "IMAGEN DE LLUVIA O PUNTOS EN TU TELEVISOR" (image of rain or dots in your tv). --191.83.185.110 (talk) 20:16, 18 November 2020 (UTC)[reply]

https://www.directv.com.ar/ayuda/home/asistencia-tecnica/problemas-de-imagen-y-audio/imagen-de-lluvia-o-puntos-en-tu-televisor.html

Amplification?[edit]

Why does video noise consist of only black and white dots? --Abdull 10:31, 21 October 2007 (UTC)[reply]

Answer: due to the automatic gain control in the amplifier --lucadealfaro —Preceding undated comment added 22:42, 14 July 2009 (UTC).[reply]

Nostalgia Nerd made a nice video that explains it. Let me try to summarize: for historical/compatibility reasons, analog color TV is actually comprised of a B&W signal first, then a color overlay. Now, when your TV gets no proper signal, it treats random ambient electromagnetic noise as if it was a signal. Except it can't find the specific markers for the colorburst, so there is no color information to lay over that. --179.182.131.165 (talk) 15:01, 2 March 2019 (UTC)[reply]

Blue screen?[edit]

Should there be mention that most TVs nowadays have a "blue screen" instead of "snow" when there's a poor or no signal? —Micahbrwn (talk) 08:34, 30 June 2008 (UTC)[reply]

Is this true? I have a flat panel TV which is only a few years old. It displays regular snow when I switch to any analog channel (because in my area there is no analog TV anymore) and when I have a switch to a digital channel or any input without signal, I get black screen which has a writing with "no signal" and a Logo of the marque of my TV, which always changes the position on the screen.

The only device that I have which displays a blue screen is a VHS recorder which I bought about 2006 which outputs a blue screen over SCART and composite video when in standby, not playing or playing a blank tape. ––MrBurns (talk) 14:03, 21 May 2020 (UTC)[reply]

No Background Radiation[edit]

The Universe's background radiation is in the microwave range, and requires special antennas (radiotelescopes) to detect. It is not easy to detect, and it certainly cannot be done with normal TVs! --lucadealfaro —Preceding undated comment added 22:45, 14 July 2009 (UTC).[reply]

Sound[edit]

What is the sound of the static called; I thought it was white noise. It seems to be always the maximum amplitiude (loudness) at whatever volume level- the loudest it can potentially be at the volume setting it's at- it's louder than the commercials. Daniel Christensen (talk) 19:32, 2 November 2009 (UTC)[reply]

Is the first paragraph for real?[edit]

Static is caused by the Big Bang and the atomic bomb? Can we talk about adding a citation for that? —Preceding unsigned comment added by 74.73.186.240 (talk) 23:41, 28 February 2010 (UTC)[reply]

I doubt the atomic bomb bit but I have heard about background radiation from the Big Bang being the cause. In fact it's been cited on several Discovery channel science shows as I recall.. -- œ ^™ 03:02, 9 April 2010 (UTC)[reply]

Alternate names[edit]

Maybe this is just me, but I've also heard it referred to as "fuzz" and "salt and pepper". Use your imagination. 67.171.222.203 (talk) 16:43, 14 May 2014 (UTC)[reply]

There are no pixels on a CRT[edit]

Once again we find a reference, in the opening sentences, to "pixels" on an analog video display. There is no such thing in the legacy television signal or on a legacy television screen. There is only a discrete number of lines; horizontal resolution is continuously variable depending on the quality of the electronics. 2600:1700:5B2E:9050:69F6:B561:92D0:500D (talk) 23:44, 28 July 2020 (UTC)[reply]

Example of the positive static from the UK[edit]

Try as I might, Google can't find me a decent video or image of the positive static discussed in this article. An example would be immensely helpful and interesting. 72.213.167.220 (talk) 00:23, 9 March 2021 (UTC)[reply]