Today I learned that cats don’t perceive music the way we do. Kitties have different acoustic, vocal, and heartbeat ranges than us. And there's music made specifically for them such as Cozmo’s Air composed by a team of researchers at the University of Wisconsin. catological.com/cats-like…
The sound quality of the album Back in Black by ACDC is so good, that after its release, studios in Nashville would use it to check the acoustics of a room, while MotΓΆrhead would use it to tune their sound system. en.wikipedia.org/wiki/Bac…
Philosopher, architect and polymath Robert Hooke invented an acoustic string telephone as early as 1667. en.wikipedia.org/wiki/Tin…
The acoustic sound wave from the Saturn V rocket on takeoff would have melted the concrete on the launchpad without the water-based acoustic suppression system interestingengineering.co…
The iconic and famed Sydney Opera House actually has terrible acoustics. At least $200 million has been spent trying to fix it. abc.net.au/news/2016-11-1…
Today I learned of the Tulsa Center of the Universe. An acoustic anomaly located in Oklahoma. When one stands in the center of the circle and makes a noise, that noise is echoed back several times louder than it was made, but no one standing outside the circle can hear a thing. atlasobscura.com/places/t…
Sound can be focused into a singular spot with an acoustic lens like light with an optical lens youtu.be/RLBmWF9Xo10
In Fleetwood Mac's Never Going Back Again, to capture the optimal sound, producer Ken Caillat had Buckingham's acoustic guitar restrung every 20 minutes en.wikipedia.org/wiki/Nev…
The first analog, acoustic telephone was created 1,200 to 1,400 years ago in Peru. It was made of two gourds connected by 75 feet of twine, similar to the phones kids make with tin cans and string. It's in the collection of the Smithsonian National Museum of the American Indian. smithsonianmag.com/smiths…
10 Downing Street in the 19th Century was guarded by two men who would sit outside the building in leather chairs, armed with a pistol. Each chair featured a drawer filled with hot coals to keep the guards warm, and a sphere-shaped hood to protect from the weather and improve acoustics. en.wikipedia.org/wiki/10_…
Jupiter’s Great Red Spot is so loud, it’s acoustic sound waves heat up the surrounding atmosphere to almost 2400 degrees Fahrenheit smithsonianmag.com/smart-…
Today I learned of the Tulsa Center of the Universe. An acoustic anomaly located in Oklahoma. When one stands in the center of the circle and makes a noise, that noise is echoed back several times louder than it was made, but no one standing outside the circle can hear a thing. atlasobscura.com/places/t…
The United States Air Force B-2 Spirit stealth bomber's "low observability is derived from a combination of reduced infrared, acoustic, electromagnetic, visual and radar signatures. These signatures make it difficult for the sophisticated defensive systems to detect, track and engage the B-2." airman.dodlive.mil/2019/0…
Dolphins can understand syntax. In 1997, researchers used a symbolic gestural/acoustic language, asking dolphins to put one of many specific toys in one specific basket. They were able to perform the task immediately, and responded appropriately when the objects in the sentence were swapped. youtu.be/KTShFMlFFBc?t=15…
Folk singer Woody Guthrie scribbled "THIS MACHINE KILLS FASCISTS" on the front of his acoustic guitar ushistoryscene.com/articl…
The iconic 'Bass' line from "Seven Nation Army" isn't played on a bass guitar, but instead on a semi-acoustic guitar electronically lowered an octive. nme.com/blogs/nme-blogs/2…
The thorax fur of moths acts as a lightweight porous sound absorber, facilitating acoustic camouflage and offering a significant survival advantage against bats. asa.scitation.org/doi/10.…
There is rock band called "compressorhead" consisting of robots who play real acoustic and electric instruments and are controlled by a MIDI sequencer. youtu.be/TaY7vohLXK4
When testing underwater acoustics during the cold war in 1960, scientists detonated a series of 300lb bombs off of Perth, Australia. This was heard three and a half hours later 10,000 miles away in Bermuda. gizmodo.com/how-an-underw…
The Sydney Opera House actually has terrible acoustics. Edo de Waart, the former chief conductor of the Sydney Symphony Orchestra, once threatened to boycott the building. There is a A$202 Million project to renovate and improve the acoustics. content.time.com/time/wor…
Today I Learned of the Tulsa Center of the Universe. An acoustic anomaly located in Oklahoma. When one stands in the center of the circle and makes a noise, that noise is echoed back several times louder than it was made, but no one standing outside the circle can hear a thing. atlasobscura.com/places/t…
Guitar can be played with one hand by using only 'hammer-ons' and 'pull-offs'. Here is a video of Trace 'The Acoustic Ninja' Bundy performing his own song, 'Dueling Ninjas', in which he uses his left hand to play the melody and his right hand to play the bass notes. youtube.com/watch?v=OsNdM…
The iconic 'scream' made by WW2 dive bombers is produced by two separate acoustic devices mounted to the wings, known as a 'Jericho Trumpet(s)' and serve no purpose beyond intimidation. uh.edu/engines/epi2498.ht…
Ultrasonic welding is an industrial technique whereby high-frequency ultrasonic acoustic vibrations are locally applied to workpieces being held together under pressure to create a solid-state weld. It is commonly used for plastics and metals, and especially for joining dissimilar materials. en.wikipedia.org/wiki/Ult…
Today I learned of retronyms, words created to differentiate between two words, where previously no clarification was required, like acoustic guitar. en.wikipedia.org/wiki/Ret…
These massive concrete acoustic mirrors, or β€œlistening ears,” were built in England between the world wars to monitor the skies for the telltale sounds of airborne invasion. slate.com/blogs/atlas_obs…
Today I learned about "Sonoluminescence", Sound into Light. It is a phenomenon that occurs when bubbles trapped in a liquid grow and then contract at incredibly high speeds when blasted with acoustic sound waves, this results in small burts of of an intensely hot light, and thus light is created from sound. youtube.com/watch?v=HOPCG…
Today I learned of Project COLDFEET, where CIA agents parachuted onto a drifting ice station in the Arctic, infiltrated a recently-abandoned Soviet research installation, recovered intelligence on Soviet underwater acoustic detection systems, and then were successfully extracted via the Fulton Skyhook system. cia.gov/news-information/…
Some mines are set to explode in response to changes in magnetic and acoustic fields. Sailors on minesweepers are not allowed to have wire coat-hangers because they could kill their magnetic signature and set off a mine. stripes.com/news/u-s-mili…
Finding horse skulls under wooden floorboards in Ireland is common, and which are sometimes packed with coins: other than protecting from spirits, it allowed better acoustics and resonance in the room above, notably for dancing. daily.jstor.org/the-horse…
Horse skulls are hidden underneath the dance halls of Ireland in order to improve acoustics jstor.org/stable/25510484…
A concrete concave wall is an acoustic mirror and played a crucial part in detecting marauding zeppelins along the English coast during WW1. nationaltrust.org.uk/the-…
Several times during the Civil War, an anomaly known as an Acoustic Shadow prevented kept army commanders from hearing the sounds of battle only a few miles away. historynet.com/the-sounds…
Most of the smoke billowing up from a space shuttle launch is not exhaust. It is water vapor from the pool of water under the shuttle designed to absorb the acoustic shock waves that could otherwise tear the shuttle apart. en.wikipedia.org/wiki/Mob…
Seat cushions at the Walt Disney Concert Hall in LA are designed to have the same absorption properties as the average person so that the hall has the same acoustics when empty or full-- an advantage for musicians, who usually rehearse in an empty hall books.google.ca/books?id=…
Washington, D.C. uses a series of acoustic sensors called "ShotSpotter" to detect gunfire. When "ShotSpotter" sensors detect a loud noise, a central computer program analyzes the acoustic signature, pinpoints the suspected location to within a few yards and notifies police. washingtonpost.com/invest…
The acoustic era (1877 to 1925) gave rise to the expression "put a sock in it", which commemorates the common practice of placing a sock in the horn of the phonograph to muffle the sound for quieter listening. en.wikipedia.org/wiki/His…
The clouds around a rocket launch are actually a sound suppression system - NASA pumps in massive amounts of water and the acoustic energy is used up by vaporizing it! physicsfootnotes.com/gifs…
Approximately three German submarines in WWII were thought to have torpedoed themselves when their torpedoes missed their original target, and using their acoustic seeking capabilities, circled back around to strike their originating submarine. en.wikipedia.org/wiki/Ger…
Today I learned about SuperCollider, a dynamic programming language and real-time audio synthesizer. It's used by both scientists and artists for acoustic research and to create algorithmic music en.wikipedia.org/wiki/Sup…
Ringxiety is a β€œpsycho-acoustic phenomenon” in which you hear or feel your cell phone ringing when it’s not. telegraph.co.uk/news/scie…
Law Enforcement in the USA use an automatic gunfire locating system called "ShotSpotter" which detects and conveys the location of gunfire or other weapon fire using acoustic, optical, or potentially other types of sensors. en.wikipedia.org/wiki/Gun…
In the 40s, computer memory systems used mercury as an acoustic medium. Alan Turing suggested gin as a cheaper alternative. dl.acm.org/citation.cfm?d…
The quietest place on earth measures -9 db. It's located in an acoustics and architecture test facility in Minnesota. Most people can't stay longer than about 20 minutes and emerge disoriented and unsettle. slate.com/blogs/atlas_obs…
The soundtrack of The Life Aquatic With Steve Zissou was mostly David Bowie songs translated into Portuguese and performed by a Brazilian samba artist on an acoustic guitar npr.org/2010/09/13/129754…
Due to a communication error on set of 'The Hateful Eight', a 150 year old acoustic guitar on loan from the Martin Museum was destroyed in place of a prop guitar reverb.com/ca/news/cf-mar…
In the 70s, Canadian rock band Rush wrote an acoustic ballad about Rivendell, the Eleven city in Lord of the Rings youtube.com/watch?v=_G-za…
Today I learned of The Thing, invented by Leon Theremin, of theremin electronic music instrument fame. The Thing converted acoustic waves directly into radio wave modulations, with no circuitry nor batteries. For 7 years it hung in the office of the US Ambassador to Moscow, in plain view, almost undetectable. en.wikipedia.org/wiki/The…
The acoustic bass guitar was invented two decades after the electric bass was introduced en.wikipedia.org/wiki/Aco…
. Archaeoacoustics is the use of acoustical study as a methodological approach within archaeology. This may for example involve the study of the acoustics of archaeological sites, or the study of the acoustics of archaeological artifacts. archaeoacoustics.org/
Today I learned of the acoustic coupler, a device used by the first personal computer (like the Apple II) to tranfer data per telephone. It is still used in areas where electrical access to the telephone network is illegal as well as by TDDs of deaf person! en.wikipedia.org/wiki/Aco…
The European Space Agency' Large European Acoustic Facility in Noordwijk, the Netherlands has four giant horns for testing satellites β€” to see if they can withstand the noise of a rocket launch esa.int/spaceinimages/Ima…
Today I learned of "shrimpoluminescense": the pistol shrimp quickly snaps a specialized claw, creating a cavitation bubble moving at 60 miles per hour, releasing a sound reaching 218 decibels and acoustic pressures of up to 80 kPa, strong enough to kill small fish, and even create a tiny flash of light en.wikipedia.org/wiki/Son…
Under ideal acoustic circumstances (in a soundproof room having an ambient noise level of 17 dB or less), slight tinnitus is present in 80 to 90% of all adults zidbits.com/2013/02/what-…
A recent proposition to probe the earth's mantle involved a meter-thick sphere of tungsten housing a radioactive Cobalt-60 core, to melt its way down through the Earth's crust. As rock recrystallized behind the probe, acoustic measurements can be made. It could delve 100km in a few decades. en.wikipedia.org/wiki/Man…
The CIA had an operation called "Acoustic Kitty" in which they inserted an antenna, a battery, and a microphone into a cat to make it a mobile listening device, and it was scrapped when the cat got run over. $15,000,000 dollars and five years of research, were gone. vimeo.com/m/21804385
Cities are using hidden web of acoustic sensors to detect gunfire motherboard.vice.com/read…
Chet Atkins often used the school restroom to practice on the guitar because it gave better acoustics. en.wikipedia.org/wiki/Che…
Karlheinz Brandenburg, a German acoustics engineer, was the inventor of the MP3 format. engadget.com/2015/06/26/m…
Today I learned of Acoustic Kitty, a 1960's CIA operation to implant a listening device in a cat to spy on the Soviets. In the first test, the cat was released in Washington D.C. and promptly run over by a taxi. news.discovery.com/animal…
That, before radar, Britain built huge concrete β€˜acoustic mirrors’, to magnify the sounds of approaching enemy aircraft. en.wikipedia.org/wiki/Aco…
The drums by John Bonham in the 1970 Led Zeppelin song 'When The Levee Breaks' were recorded in a staircase at Headley Grange due to the unique acoustic characteristics. Two microphones were set up on the second story landing of the three story stairwell, and the drums were played at the bottom ledgernote.com/blog/scien…
Wolves "howl at the moon" for better acoustics, since projecting their calls upward allows the sound to carry farther. mentalfloss.com/article/5…
The Foo Fighter's song "Friend of a Friend" from the 2005 "In Your Honour" album was the first acoustic song Dave Grohl had ever written back in 1990 and it was about his first impressions of new bandmates Kurt Cobain, and Krist Novoselic. en.wikipedia.org/wiki/Fri…
The first musician to break his guitar at the end of a performance is probably Rockin Rocky Rockwell, smashing an acoustic guitar over his knee after a mocking performance of Elvis' 'Hound Dog' en.wikipedia.org/wiki/Ins…
Many cities in the US now have acoustic gunshot locator systems that automatically alert the police when gunfire is heard, with a precise location. youtube.com/watch?v=1MiKY…
CIA operation Acoustic Kitty - an $20mil project to use stray cats implanted with a microphone antenna, as spies in Russia, was declared a total loss in 1967 when the test "spy" was hit and killed by a taxi almost immediately after it's release. news.bbc.co.uk/cbbcnews/h…
Whistled Turkish is a language in Turkey. "Whistled languages use the existing words in a language, but they're approximated in a whistled form, while still retaining a lot of the original acoustic information that would have been present in a normal utterance like pitch and sentence stress." youtube.com/watch?v=2JgdN…
Today I learned of The Harvester, America’s only Carnivorous Butterfly. It is tended by ants, the aphids it eats don't try to escape, it make acoustics signals, and its pupae look like a money's face. lepscience.com/2013/10/31…
One of the theories trying to figure out Stonehenge suggests the rocks were put there because of their unique acoustic properties, and a a Presli village used the bluestones as a church bell through the 18th century. walyou.com/the-real-secre…
Cacti have certain acoustic properties, meaning you can literally PLAY the cactus youtu.be/Mh8eHDN9MK0
Many people sing in the bathroom because the hard wall surfaces, often tiles or wooden panels, and lack of soft furnishings, create an aurally pleasing acoustic environment. wikipedia.org/wiki/Bathro…
In the 1960's the CIA spent $20 million on an operation called "Acoustic Kitty". They used cats with microphones to spy on Kremlin and Soviet embassies. The first cat sent to spy was killed by a taxi. The operation was cancelled in 1967. en.wikipedia.org/wiki/Aco…
Most of the smoke billowing up from a space shuttle launch is not exhaust. It is water vapor from the pool of water under the shuttle designed to absorb the acoustic shock waves that could otherwise tear the shuttle apart! en.wikipedia.org/wiki/Mob…
Bad acoustics in school classrooms may cause learning problems for students, as well as higher rates of sore throats and stress for teachers. news.bbc.co.uk/2/hi/uk_ne…
Today I learned of Acoustic Kitty, a $20m 1960s CIA project involving the use of cats to spy on the Kremlin and Soviet embassies. The project was abandoned due to the difficulty of training the cats to behave as required. en.wikipedia.org/wiki/Aco…
I learned about Operation Acoustic Kitty - a $20mil spy-cat project by the CIA. He was promptly run over at the start of his mission en.wikipedia.org/wiki/Ope…
Today I learned of Acoustic Kitty, a CIA project to have cats spy on the Soviets with small radio transmitters en.wikipedia.org/wiki/Aco…
A company called Shotspotter uses "Wide-Area Acoustic Surveillance" to detect the sound of a gunshot and determine the precise location including latitude/longitude and street address, exact time and number of rounds fired, shooter position, speed and direction of travel (if moving). shotspotter.com/solutions
Acoustic absorption devices (sound-proofing) like basstraps function by turning sound energy into heat through friction en.wikipedia.org/wiki/Bas…
During the Cold War, the CIA's Operation Acoustic Kitty spent $20 million to insert a battery and microphone into a cat, while turning its tail into an antenna, to spy on a Soviet compound in Washington. The cat was released nearby... but was hit and killed by a taxi almost immediately. en.wikipedia.org/wiki/Aco…
ZZ Top had a cameo as the festival band in Back to the Future III. The song they perform is the acoustic version of "Doubleback". en.wikipedia.org/wiki/Dou…
In the 60's the CIA tried to use cats to secretly spy on the Soviet embassies by sewing recording equipment into them, including an antenna in their tail. Project Acoustic Kitty. en.wikipedia.org/wiki/Aco…
OK Go spent 2 months in a desert warehouse with an acoustic engineer to build and prepare the thousands of instruments for the Needing/Getting music video caranddriver.com/features…
Acoustic guitar is often recorded with a microphone at ear level of the musician, because it replicates how we actually hear it being played humbuckermusic.com/acguit…
Fire can be used to demonstrate an acoustic standing wave with a 'Ruben's Tube' [video] youtube.com/watch?v=gpCqu…
Dave Grohl's 1st Acoustic Performance of Everlong was on the Howard Stern Show. simplethingcalledlife.com…
Ultrasonic cleaning has a counterpart - acoustic cleaning en.wikipedia.org/wiki/Aco…
Acoustic Kitty was a CIA project in the 1960s attempting to use cats in spy missions. en.wikipedia.org/wiki/Aco…
Today I learned about the failed CIA project Operation Acoustic Kitty, where cats were to be used as spies

Saw it on today's Dinosaur Comics, and validated it on Wikipedia

Observers of nearby battles during the Civil War would sometimes see the smoke and flashes of light from cannons but not the corresponding roar of battle, yet those in more distant locations would hear the sounds distinctly. They called it an "acoustic shadow." en.wikipedia.org/wiki/Aco…
[] During the Cold War, the CIA spent $20 million on Project Kitty Acoustic involving wired cats. en.wikipedia.org/wiki/Aco…
DARPA is researching using electric and acoustic suppression for fire (short video link). The first comment links to an article. youtube.com/watch?v=DanOe…
You can make objects levitate with acoustics youtube.com/watch?v=94Kzm…
Acoustic analysis of the recording of Neil Armstrong's famously misspoken first line on the moon has shown that it may have actually been said correctly, with the 'a' obscured by static. en.wikipedia.org/wiki/Nei…
Today I learned that in the 1960's the CIA spent $20 million on Operation Acoustic Kitty, a project which involved surgically implanting microphones and radio antennas into cats to spy on the Soviet Union.
In the 1862 American Civil War Battle of Iuka, an acoustic shadow, possibly enhanced by a northeast wind, kept two divisions of Union soldiers out of the battle. They could not hear the sounds of battle only six miles downwind. en.wikipedia.org/wiki/Spe…
Corey Taylor From Slipknot Did an Acoustic Cover of the Spongebob Theme. youtube.com/watch?v=5DHB0…
You can create your own tiny (acoustic) levitation device. hackaday.com/2013/09/20/d…

Please note that this site uses cookies to personalise content and adverts, to provide social media features, and to analyse web traffic. Click here for more information.