Some people who attend the World Cup games enjoy blowing plastic horns called vuvuzelas, which are loud and make an ugly sound. Trevor Cox, president of the UK Institute of Acoustics explained to New Scientist why they sound so awful.
The vuvuzela is like a straightened trumpet and is played by blowing a raspberry into the mouthpiece. The player's lips open and close about 235 times a second, sending puffs of air down the tube, which excite resonance of the air in the conical bore. A single vuvuzela played by a decent trumpeter is reminiscent of a hunting horn – but the sound is less pleasing when played by the average football fan, as the note is imperfect and fluctuates in frequency. It sounds more like an elephant trumpeting. This happens because the player does not keep the airflow and motion of the lips consistent.
UPDATE: How to filter vuvuzela out of World Cup audio
What makes the sound of vuvuzelas so annoying? (Via Kristie Lu Stout)
Photo by Dundas Football Club | Attribution 2.0 Generic
This gadget does exactly as promised: it looks like a thumbdrive (sort of) and fries the circuitry of any computer it’s plugged into. It’s made from camera flash parts, is charged with a standard AA battery, and delivers a 300V zap of DC destruction to the port for all your USB-murdering needs. Note that this […]
The Cobham catalog, exposed by The Intercept, features countless pages of surveillance gadgets sold to U.S. police to spy on American citizens: tiny black boxes with a big interest in you. In the creepily bland feature lists and nerdy product names is a whisper of a dark future; perhaps darker than anyone can imagine.
This image depicts the most commonly-found stylesheet colors on the web’s top sites—Paul Hebert did an amazing amount of analysis and this is just one of the intriguing visualizations he came up with. Most of these are obvious staples, especially HTML red and blue, though it’s interesting how far the blue “cluster” is from the […]
These days, there’s definitely no shortage of touchscreen gloves available, but the key is finding ones that consistently work well. These iGloves Touchscreen Gloves are super reliable, and are on sale for just $11.99.Super comfortable and functional, these gloves will keep your hands warm and still let you use any touchscreen, from phones to tablets. The iGloves’ […]
The Black Friday Mac Bundle 2.0 is one of the Boing Boing Store’s best-selling Mac bundles yet, and it’s about to come to an end. If you don’t get your copy now, here’s what you’ll be missing:This bundle comes packing 9 top-rated Mac apps in one package, at the hugely discounted price of just $23.99. […]
The Boing Boing Store’s Gift Guide is full of ideas for pretty much anyone in your life like hipster ice cub trays, Xbox controllers, Halo Boards, and even diamond necklaces. As always, all products in the Boing Boing Store come at great discounts, too. Shop by price bucket starting at under $20. Under $20:Bloxx Jumbo Ice Trays […]