Introducing the Gizmag Store

Sound

The 'noise sponge' that can significantly reduce the noise of combustion in jet engines (P...

Anyone living near an airport will tell you that combustion engines can be pretty noisy things. The combustion process in jet and other industrial engines can generate sound waves so powerful they can cause intense pulsations that can shake the engine and accelerate mechanical failure. Using a sponge-like material, researchers at the University of Alabama have managed to significantly quiet combustion at the source, providing the potential to make work environments safer, extend the life of valuable equipment, and maybe let those living near an airport sleep a little easier.  Read More

Porter & Davies' BC2 - vibrations travel up the spine via bone conduction and are heard as...

The thunderous punch of a bass drum is the time-honored foundation on which all of rock 'n' roll is built. That thud that hits you in the chest and moves your whole body … it taps into a deep and primal place in our subconscious. But while the crowd is enjoying the power of the bass drum amplified through huge sub-woofers, the poor drummer himself is usually hearing a poxy, paper-thin, bassless pop from a tiny onstage foldback speaker. Trying desperately to feel the bass, they often turn the onstage monitors up to ear-splitting volumes, but you just can't get that kind of low end out of small speakers. Enter the BC2 (formerly known as the BumChum) from Britain's Porter and Davies - a simple two-part system that takes the bass drum signal and literally shakes the drummer's butt with it through a vibrating stool.  Read More

A Japanese team has invented a portable device that painlessly causes people to stop talki...

For those who don't suffer the talkative gladly, a pair of Japanese researchers may have come up with just the thing - a portable device that can painlessly jam a person's speech from up to 30 meters (98 ft) away. Ingeniously dubbed the "SpeechJammer," you aim it like a gun and, if it's anywhere near as effective as the Delayed Auditory Feedback exhibit I tried at my local science museum, it works like a charm.  Read More

Copper negative of an October 1881 phonograph (Photo: Patrick Feaster/National Museum of A...

Recently, and for the first time in living memory, sound recordings made in 1881 at Alexander Graham Bell's Volta Laboratory Association have been heard aloud. The experimental phonographs made by the association where Bell worked alongside instrument-maker Charles Sumner Tainter and chemist Chichester A. Bell are thought to be the oldest preserved sound recordings intended for playback.  Read More

A new technology from startup SonicNotify will allow your smartphone to provide context-se...

A new startup called SonicNotify has developed a technology that will enable smartphone apps to receive data via high frequency sound inaudible to the human ear. Though limited, the signals would be sufficient to transmit, say, a web address that could be automatically opened by your smartphone. These frequencies could be embedded into any audio being played through a speaker, and provide contextual information to the user. So, museums and art galleries could effectively transmit detailed information on their exhibits via their apparently silent PA systems. The cliche applies, I'm afraid: the possibilities are unending.  Read More

Dr. Nicolas Stenger's microstructured polymer plate

Many of the current experimental "invisibility cloaks" are based around the same idea - light coming from behind an object is curved around it and then continues on forward to a viewer. That person is in turn only able to see what's behind the object, and not the object itself. Scientists from Germany's Karlsruhe Institute of Technology have applied that same principle to sound waves, and created what could perhaps be described as a "silence cloak."  Read More

The Hidden Radio And Bluetooth Speaker is a very simple canister-shaped Bluetooth speaker ...

Bluetooth speakers are not particularly complex devices in terms of operation - you just pair them with a Bluetooth-enabled device, adjust the volume and enjoy the sound. However, a duo of industrial designers have created the Hidden Radio And Bluetooth Speaker in an attempt to make it even simpler and more intuitive. The unit is also claimed to offer an impressive 30 hours of battery life.  Read More

Artist Nik Nowak has converted a Japanese mini-dumper into a 'sound tank' that pumps out 4...

Do you like car stereos with good, thumping bass? I mean, do you really, really like them? If so, you might be appreciative of "Tank," a creation by Berlin artist Nik Nowak. The fully-functioning tracked vehicle sports six 12-inch mid-range drivers, three 18-inch subwoofers, four tweeters, and pumps out 4,000 watts of gut-wobbling sound - just think of it as an acoustic assault vehicle.  Read More

A schematic of an acoustic diode, showing how the elastic spheres are able to convert the ...

When it comes to the sound-proofing of buildings, most people likely think of using materials that simply absorb the sound waves in a noisy room, so they can't proceed into a neighboring quiet room. Researchers at the California Institute of Technology (Caltech), however, are taking a different approach. They have created something known as an acoustic diode, that only allows sound traveling through it to go in one direction. If incorporated into building materials, such diodes would let sound travel from the quiet room to the noisy one, but would simply block noise transmission in the opposite direction.  Read More

The Steampunk Plasma Speaker's resonance coil creates an electromagnetic field sufficient ...

So, you've downloaded some songs by Abney Park (one of the world's few steampunk bands) onto your Datamancer laptop or your Old Time Computers-accessorized PC ... do you just listen to them through the built-in speakers? Not if you're Polish tinkerer Conscious Flesh. He has created a speaker that not only looks delightfully mad-Victorian-scientist-esque, but it actually produces sound using plasma discharges. Nikola Tesla would definitely approve.  Read More

Looking for something? Search our 26,475 articles