Editing Colors of noise (section)

===Black noise===

* [[Silence]]
* [[Infrasound]]<ref>{{Cite web|url=https://vigilantcitizenforums.com/threads/david-bowie-and-the-black-noise.579/|title=David Bowie and the Black Noise|website=The Vigilant Citizen Forums|date=21 May 2017 }}</ref>
* Noise with a 1/''f''{{i sup|''β''}} spectrum, where {{nowrap|''β'' > 2}}. This formula is used to model the frequency of natural disasters.<ref>{{cite book |first=Manfred |last=Schroeder |title=Fractals, Chaos, Power Laws: Minutes from an Infinite Paradise |url=https://books.google.com/books?id=Qpa77Jl2rvQC&pg=PA129 |pages=129–30 |publisher=Courier Dover |year=2009 |isbn=978-0486472041}}</ref>{{clarify|reason=What is the relation between "natural disasters" and "noise"?|date=January 2018}}
* Noise that has a frequency spectrum of predominantly zero power level over all frequencies except for a few narrow bands or spikes. ''Note:'' An example of black noise in a facsimile transmission system is the spectrum that might be obtained when scanning a black area in which there are a few random white spots. Thus, in the time domain, a few random pulses occur while scanning.<ref>{{cite web|url=https://glossary.its.bldrdoc.gov/fs-1037/dir-005/_0649.htm|title=Definition of "black noise" – Federal Standard 1037C|access-date=28 April 2008|archive-url=https://web.archive.org/web/20081212191754/https://glossary.its.bldrdoc.gov/fs-1037/dir-005/_0649.htm|archive-date=12 December 2008|url-status=dead}}</ref>
* Noise with a spectrum corresponding to the [[blackbody]] radiation (thermal noise). For temperatures higher than about {{val|3|e=-7|u=K}} the [[Black-body radiation#Wien's displacement law|peak of the blackbody spectrum]] is above the upper limit of human [[hearing range]]. In those situations, for the purposes of what is heard, black noise is well approximated as [[violet noise]]. At the same time, [[Hawking radiation]] of [[black hole]]s may have a peak in hearing range, so the radiation of a typical [[stellar black hole]] with a mass equal to 6 solar masses will have a maximum at a frequency of 604.5&nbsp;Hz – this noise is similar to green noise. A formula is: <math>f_{\text{max}} \approx 3627 \times {\text{M}_\odot \over \text{M}}</math>&nbsp;Hz.  Several examples of audio files with this spectrum can be found [https://physics.stackexchange.com/a/216688/92058 here].{{citation needed|reason=Looks like original research, or a niche interest.|date=October 2023}}