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#Frequencies

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Matthieu Urvoy<p>Building a consonant tritone!?! What an amazing and outlandishy idea!</p><p><a href="https://youtu.be/9qXXH1MXyGA" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">youtu.be/9qXXH1MXyGA</span><span class="invisible"></span></a></p><p>Comes with nice and comprehensive reminders about sound sensation/perception, as well as concepts of consonance and dissonance.</p><p>A treat!</p><p><a href="https://piaille.fr/tags/music" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>music</span></a> <a href="https://piaille.fr/tags/theory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>theory</span></a> <a href="https://piaille.fr/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://piaille.fr/tags/MarcEvanstein" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MarcEvanstein</span></a></p>
think and grow<p>🌟 Your vibrational frequency shapes everything. Your thoughts, emotions, and energy emit a signal—what you attract mirrors that vibe. Raise your frequency, and you raise your life.<br><a href="https://de320.isrefer.com/go/root396gift/Stuartn/" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">de320.isrefer.com/go/root396gi</span><span class="invisible">ft/Stuartn/</span></a><br>&nbsp;#<a href="https://mastodon.social/tags/HighVibes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HighVibes</span></a> <a href="https://mastodon.social/tags/EnergyMatters" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EnergyMatters</span></a> <a href="https://mastodon.social/tags/VibrationalHealing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>VibrationalHealing</span></a> <a href="https://mastodon.social/tags/ThinkandGrowEducation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ThinkandGrowEducation</span></a> <a href="https://mastodon.social/tags/RayBehan" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>RayBehan</span></a> <a href="https://mastodon.social/tags/Frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frequencies</span></a> <a href="https://mastodon.social/tags/Meditation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Meditation</span></a></p>
A.G.<p>"DARK CATALOGUE OF MINOR FREQUENCIES". Abstract digital painting by A.G. (c) 2025. All Rights Reserved. <a href="https://mastodon.social/tags/historiotheque" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>historiotheque</span></a> <a href="https://mastodon.social/tags/artoperations" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>artoperations</span></a> <a href="https://mastodon.social/tags/concreterealism" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>concreterealism</span></a> <a href="https://mastodon.social/tags/seasonsoftheheart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>seasonsoftheheart</span></a> <a href="https://mastodon.social/tags/springtimeoflife" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>springtimeoflife</span></a> <a href="https://mastodon.social/tags/springtimeofjoyfulbeing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>springtimeofjoyfulbeing</span></a> <a href="https://mastodon.social/tags/dark" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>dark</span></a> <a href="https://mastodon.social/tags/catalogue" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>catalogue</span></a> <a href="https://mastodon.social/tags/minor" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>minor</span></a> <a href="https://mastodon.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a></p>
Steve Dustcircle 🌹<p>Remarkable Effects of <a href="https://masto.ai/tags/Cymatic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Cymatic</span></a> <a href="https://masto.ai/tags/Frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Frequencies</span></a> On <a href="https://masto.ai/tags/Matter" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Matter</span></a></p><p><a href="https://www.onlygoodnewsdaily.com/post/remarkable-effects-of-cymatic-frequencies-on-matter" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">onlygoodnewsdaily.com/post/rem</span><span class="invisible">arkable-effects-of-cymatic-frequencies-on-matter</span></a></p>
Jesse Alexander, WB2IFS/3<p><span class="h-card" translate="no"><a href="https://m.ai6yr.org/@bud_t" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>bud_t</span></a></span> <span class="h-card" translate="no"><a href="https://bird.makeup/users/arrl" class="u-url mention" rel="nofollow noopener" target="_blank">@<span>arrl</span></a></span> This is a QST. We may have to fight to keep our <a href="https://mastodon.hams.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://mastodon.hams.social/tags/hamradio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hamradio</span></a></p>
Jesse Alexander, WB2IFS/3<p>Oh and by the way, <a href="https://mastodon.hams.social/tags/radioastronomers" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>radioastronomers</span></a>, they are coming for your <a href="https://mastodon.hams.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> too so pay close attention and fight.</p>
Jesse Alexander, WB2IFS/3<p>We need to fight and stop the <a href="https://mastodon.hams.social/tags/fcc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fcc</span></a> from selling off the "valuable <a href="https://mastodon.hams.social/tags/realestate" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>realestate</span></a>"--our <a href="https://mastodon.hams.social/tags/amateurradio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>amateurradio</span></a> <a href="https://mastodon.hams.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a>--to the highest bidders!</p>
Colm O'Neill<p>A day of learning <a href="https://post.lurk.org/tags/meshtastic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>meshtastic</span></a> and having good fun reading the stats, mqqt possibilities, and digital mapping, I'm just wondering if meshtastic is the <a href="https://post.lurk.org/tags/5g" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>5g</span></a> of <a href="https://post.lurk.org/tags/APRS" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>APRS</span></a> </p><p>Still, getting an applied understanding of <a href="https://post.lurk.org/tags/radio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>radio</span></a> <a href="https://post.lurk.org/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://post.lurk.org/tags/rf" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>rf</span></a> is eye opening. Lots more to learn :)</p>
Mix Mistress Alice💄<p>Underground Resistance interview (probably with Mike Banks &amp; other members) [edited] from 1992 &gt;</p><p><a href="https://on.soundcloud.com/PYmx2mycQf7bepAb8" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">on.soundcloud.com/PYmx2mycQf7b</span><span class="invisible">epAb8</span></a></p><p><a href="https://todon.eu/tags/interview" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>interview</span></a> <a href="https://todon.eu/tags/music" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>music</span></a> <a href="https://todon.eu/tags/Detroit" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Detroit</span></a> <a href="https://todon.eu/tags/DetroitTechno" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>DetroitTechno</span></a> <a href="https://todon.eu/tags/archives" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>archives</span></a> <a href="https://todon.eu/tags/ElectronicMusic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ElectronicMusic</span></a> <a href="https://todon.eu/tags/techno" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>techno</span></a> <a href="https://todon.eu/tags/vision" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vision</span></a> <a href="https://todon.eu/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://todon.eu/tags/streaming" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>streaming</span></a> <a href="https://todon.eu/tags/Australia" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Australia</span></a></p>
ScienceActually<p>The grooves on a vinyl record are so detailed that they can contain frequencies ranging from 20 Hz to 20,000 Hz, covering the full range of human hearing.</p><p><a href="https://sfba.social/tags/science" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>science</span></a> <a href="https://sfba.social/tags/sciencefacts" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sciencefacts</span></a> <a href="https://sfba.social/tags/records" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>records</span></a> <a href="https://sfba.social/tags/vinylrecords" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vinylrecords</span></a> <a href="https://sfba.social/tags/vinylrecord" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>vinylrecord</span></a> <a href="https://sfba.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://sfba.social/tags/humanhearing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>humanhearing</span></a></p>
Alex@rtnVFRmedia Suffolk UK<p><a href="https://social.tchncs.de/tags/Emergency" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Emergency</span></a> <a href="https://social.tchncs.de/tags/radio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>radio</span></a> <a href="https://social.tchncs.de/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> in use in <a href="https://social.tchncs.de/tags/Poland" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Poland</span></a> and <a href="https://social.tchncs.de/tags/Czechia" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Czechia</span></a> due to <a href="https://social.tchncs.de/tags/flooding" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>flooding</span></a>, please keep them free <a href="https://social.tchncs.de/tags/amateur_radio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>amateur_radio</span></a> <a href="https://social.tchncs.de/tags/hamradio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hamradio</span></a> <a href="https://social.tchncs.de/tags/CB" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>CB</span></a> <a href="https://social.tchncs.de/tags/PMR446" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>PMR446</span></a> <a href="https://social.tchncs.de/tags/EmergencyAid" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EmergencyAid</span></a> <a href="https://social.tchncs.de/tags/EmergencyCommunications" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>EmergencyCommunications</span></a> <a href="https://social.tchncs.de/tags/Europe" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>Europe</span></a></p>
MetaFilter<p>The Trouble with Trebles</p><p>umbú asks "How can I translate my hearing test results to a music player's graphic equalizer so that I can boost certain frequencies to match how a recorded music track is meant to sound?" and flug replies, "Hmm, just by complete chance I've spent the past several days messing around with just exactly this ... and the end result is, my $20 or $40 headphones end up sounding as good as $200 or $400 models." Tons of great info here!</p><p><a href="https://ask.metafilter.com/381974/How-do-hearing-test-results-translate-to-a-graphic-equalizer#5420014" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="ellipsis">ask.metafilter.com/381974/How-</span><span class="invisible">do-hearing-test-results-translate-to-a-graphic-equalizer#5420014</span></a></p><p><a href="https://mefi.social/tags/audio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>audio</span></a> <a href="https://mefi.social/tags/audiology" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>audiology</span></a> <a href="https://mefi.social/tags/earphones" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>earphones</span></a> <a href="https://mefi.social/tags/equalizer" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>equalizer</span></a> <a href="https://mefi.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://mefi.social/tags/hearing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hearing</span></a> <a href="https://mefi.social/tags/HearingLoss" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HearingLoss</span></a> <a href="https://mefi.social/tags/sound" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>sound</span></a></p>
P. G. Warren<p>Anyone who knows me knows I’m slightly obsessed with radio — I’ve been using the sounds of radio in my music since the early ‘90s — so it’s always great to visit BBC Broadcasting House and behold the iconic white lattice radio tower. The tower is more symbolic than functional although apparently it can be used for experimental broadcasts over a short distance.</p><p><a href="https://mastodon.world/tags/radio" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>radio</span></a> <a href="https://mastodon.world/tags/broadcasting" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>broadcasting</span></a> <a href="https://mastodon.world/tags/antenna" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>antenna</span></a> <a href="https://mastodon.world/tags/transmitter" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>transmitter</span></a> <a href="https://mastodon.world/tags/tower" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>tower</span></a> <a href="https://mastodon.world/tags/mast" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>mast</span></a> <a href="https://mastodon.world/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://mastodon.world/tags/bbc" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bbc</span></a> <a href="https://mastodon.world/tags/history" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>history</span></a> <a href="https://mastodon.world/tags/electronicmusic" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>electronicmusic</span></a></p>
Sascha Wolfer<p>🚨 New preprint 🚨 <br>"Does corpus size influence normalised frequencies?"</p><p><a href="https://doi.org/10.31219/osf.io/tr8de" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">doi.org/10.31219/osf.io/tr8de</span><span class="invisible"></span></a></p><p>It may sound like a silly question, but many <a href="https://fediscience.org/tags/corpus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>corpus</span></a> linguistic measures are influenced by corpus size. So we asked ourselves: Does this also hold for normalised <a href="https://fediscience.org/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a>, a measure that is meant to correct raw frequencies for the size of the underlying corpus?</p><p>We approached this by checking the association between lists of normalised frequencies for samples of different sizes.</p><p><a href="https://fediscience.org/tags/linguistics" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>linguistics</span></a></p>
autotel<p><a href="https://autotel.co/?goto=wavy" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">https://</span><span class="">autotel.co/?goto=wavy</span><span class="invisible"></span></a></p><p><a href="https://mastodon.social/tags/creativecoding" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>creativecoding</span></a> <a href="https://mastodon.social/tags/generative" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>generative</span></a> <a href="https://mastodon.social/tags/javascript" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>javascript</span></a> <a href="https://mastodon.social/tags/web" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>web</span></a> <a href="https://mastodon.social/tags/fft" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>fft</span></a> <a href="https://mastodon.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://mastodon.social/tags/visuals" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>visuals</span></a></p>
AI6YR Ben<p>Hmm, I can do that. Especially at 25W. Wonder if that thing is in SatNOGS yet. <a href="https://m.ai6yr.org/tags/space" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>space</span></a> <a href="https://m.ai6yr.org/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://m.ai6yr.org/tags/moon" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>moon</span></a></p>
Jon Wesselink<p>I saw an Indigenous man from the US, discussing cave paintings in a TV interview in his ancestral land, mention that his ancestors were still present but on a different frequency. Despite his insight, the news anchor didn't really get what he said. I think about this often... the unseen dimensions and ancestral connections in our world.</p><p><a href="https://m.fedica.com/tags/aiart" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>aiart</span></a> <a href="https://m.fedica.com/tags/aiartcommunity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>aiartcommunity</span></a> <a href="https://m.fedica.com/tags/stablediffusion" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>stablediffusion</span></a> <a href="https://m.fedica.com/tags/indigenouswisdom" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>indigenouswisdom</span></a> <a href="https://m.fedica.com/tags/ancestors" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>ancestors</span></a> <a href="https://m.fedica.com/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a> <a href="https://m.fedica.com/tags/stabilityai" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>stabilityai</span></a></p>
JMLR<p>'Conformal Frequency Estimation using Discrete Sketched Data with Coverage for Distinct Queries', by Matteo Sesia, Stefano Favaro, Edgar Dobriban.</p><p><a href="http://jmlr.org/papers/v24/22-1278.html" rel="nofollow noopener" translate="no" target="_blank"><span class="invisible">http://</span><span class="ellipsis">jmlr.org/papers/v24/22-1278.ht</span><span class="invisible">ml</span></a> <br> <br><a href="https://sigmoid.social/tags/coverage" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>coverage</span></a> <a href="https://sigmoid.social/tags/queries" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>queries</span></a> <a href="https://sigmoid.social/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a></p>
🏁⚡Omar Two Tone⚡🏁:verified:<p>Scientists find the Source of a mysterious <a href="https://ioc.exchange/tags/brain" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>brain</span></a> wave that could boost <a href="https://ioc.exchange/tags/memory" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>memory</span></a> and <a href="https://ioc.exchange/tags/creativity" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>creativity</span></a> 👇🤔🧠</p><p><a href="https://singularityhub.com/2023/07/23/scientists-found-the-source-of-a-key-brain-wave-for-memory-and-creativity/" rel="nofollow noopener" target="_blank"><span class="invisible">https://</span><span class="ellipsis">singularityhub.com/2023/07/23/</span><span class="invisible">scientists-found-the-source-of-a-key-brain-wave-for-memory-and-creativity/</span></a></p><p><a href="https://ioc.exchange/tags/cognition" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cognition</span></a> <a href="https://ioc.exchange/tags/waves" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>waves</span></a> <a href="https://ioc.exchange/tags/hippocampus" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>hippocampus</span></a> <a href="https://ioc.exchange/tags/neurons" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>neurons</span></a> <a href="https://ioc.exchange/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a></p>
Chuck Darwin<p>Gravitational waves produce a background hum across the whole universe |</p><p>The fabric of the universe is constantly rippling, according to astronomers who have discovered a background buzz of <a href="https://c.im/tags/gravitational" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>gravitational</span></a> <a href="https://c.im/tags/waves" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>waves</span></a>. These waves may be produced by <a href="https://c.im/tags/supermassive" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>supermassive</span></a> <a href="https://c.im/tags/black" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>black</span></a> <a href="https://c.im/tags/holes" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>holes</span></a> merging across the universe, but they might also have more exotic origins, such as leftover ripples in space-time created shortly after the <a href="https://c.im/tags/big" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>big</span></a> <a href="https://c.im/tags/bang" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>bang</span></a>. </p><p>Pinning down their true nature could tell us about how supermassive black holes grow and affect their host galaxies, or even about how the universe evolved in its first moments.</p><p>To find this mysterious hum, astronomers have been tracking rapidly rotating neutron stars called <a href="https://c.im/tags/pulsars" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>pulsars</span></a> that blast out light with extreme regularity. By looking at different pulsars across the Milky Way, astronomers can effectively use them as a galaxy-sized gravitational-wave <a href="https://c.im/tags/detector" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>detector</span></a> called a pulsar <a href="https://c.im/tags/timing" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>timing</span></a> <a href="https://c.im/tags/array" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>array</span></a>.</p><p>While individual gravitational waves, which are ripples in space-time created by massive objects colliding, have been seen regularly since the first detection in 2015, the object of this search is different. Those previous gravitational waves all have a <a href="https://c.im/tags/localised" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>localised</span></a> origin and rise and fall hundreds of times a second, but the newly-discovered signal is more like a gravitational wave <a href="https://c.im/tags/background" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>background</span></a> that would permeate the entire universe at much <a href="https://c.im/tags/lower" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>lower</span></a> <a href="https://c.im/tags/frequencies" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>frequencies</span></a>, similar in concept to the cosmic microwave background, which is radiation left over by the big bang and seen all over the universe today.</p><p><a href="https://www.newscientist.com/article/2380451-gravitational-waves-produce-a-background-hum-across-the-whole-universe/" rel="nofollow noopener" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">newscientist.com/article/23804</span><span class="invisible">51-gravitational-waves-produce-a-background-hum-across-the-whole-universe/</span></a></p>