Sound & Vibration Engineering

By Prosig | Our collection of articles on noise, vibration, acoustics, sound and engineering from around the Internet. Here to inform, educate, amuse and inspire.

Keyboard acoustics could let hackers untangle typed text through Skype

Those worried about their personal information leaking over the internet may already fear keystroke logging software, but a new study cautions …

Alan Turing's First Computer Music Restored

Recording dates back to 1951<p>Researchers based in New Zealand say they have restored the first known recording of computer-generated music which dates …

Six design decisions that will entice clients and improve health

Clients are ready for strategies that mitigate stress, increase happiness, and reduce costs<p>People spend 90 percent of their time indoors, and much of …

Yamaha acoustics bring out rich tones in dry-sounding rooms

As many pickers will tell you, playing an acoustic guitar in some rooms, like a lounge or bedroom, can result in rather lifeless and dry tones …

Ultrasound exposure could be making people ill, study finds

University of Southampton research finds public places can feature high frequency sounds beyond occupational health limits<p>Exposure to high frequency sounds beyond the range of human hearing from public address systems, loudspeakers and door sensors in public places could be making people feel ill, …

Research

Lego Star Wars Toys: Custom Sound Effects With Brick Sound Kit

Remember the good ol’ days of building spaceships out of Legos and vocalizing the sound effects? A “whoosh” here and a “pew pew” there? It was a …

A cheap, disposable device for diagnosing disease | Penn State University

UNIVERSITY PARK, Pa. -- The development of a reusable microfluidic device for sorting and manipulating cells and other micro/nano meter scale objects …

The Most German Display of German Engineering Ever

Bristlebot: A tiny directional vibrobot

The BristleBot is a simple and tiny robot with an agenda. The ingredients? One toothbrush, a battery, and a pager motor. The result? Serious …

This Wind Tunnel Tested Everything from WWII Fighters to Moon Rockets

Film noir set or serious aerodynamics research facility? NASA blended the two in this enormous wind tunnel, the historical facility used to test the …

Sonic Reducer: Roush Active-Exhaust App Lets Users Create Custom Exhaust Tune

No stranger to putting its own spin on the Ford Mustang, Roush Performance has never been at a loss for ways to make the pipes of the pony car wail. Tuning that raucous rumble, however, is another story. Until now, most active exhaust setups have been two-dimensional affairs, switching between a …

Sports Cars

Hate noisy jets above you? What if they were charging your phone?

A researcher with Boeing has floated a plan to convert the noise from departing planes into a power source.<p>A US patent application filing by Chin H …

Ultrasound & Water Blast Contamination from SurfacesSoaps, disinfectants, powerful chemicals and high-pressure sprays are the standard when it comes to removing tough gunk like mascara, grease, blood...

Ultrasound & Water Blast Contamination from Surfaces<p>Soaps, disinfectants, powerful chemicals and high-pressure sprays are the standard when it comes …

Infographic: How Speakers Work, In One Killer GIF

From the tiny speakers in our iPhones to the massive amps at a heavy metal conference, there are many different types of speakers in the world, but they all use the same basic acoustic principles to fill our world with music. If you’ve ever wondered how they work, this incredible animated …

Infographics

We Can Now Simulate Noise Pollution Levels Before A Road Is Even Built

Norway has a noise pollution problem - one so bad the WHO claims it is responsible for 150 cardiovascular-related deaths per year. A new group of …

Speaking Piano - Now with (somewhat decent) captions!

7 Amazing Things You Can Do With Sound Waves

Sound can identify the contents of homemade bombs, measure the temperature in a nuclear reactor, and even perform brain surgery.

Engineering

polyphonic overtone singing - explained visually

Music & Noise

The foundation of music is the musical note: a combination of pitch (the musical word for frequency) and duration (the ordinary word for amount of …

The Military Will Test a New Terrifyingly Loud Noise Gun

<b>Imagine walking through a field on a</b> cloudless day when you suddenly hear the 130-decibel roar of a fighter jet. But you can’t spot the jet, or even …

Echo Cancellation Part 1: The Basics and Acoustic Echo Cancellation

Echo cancellation is a recurring problem in telecommunication and wireless networks. And for years, equipment designers have turned to digital signal …

The impact of our research

Owl Wings Are Helping Silence Airplanes, Fans, and Wind Turbines

Owls are often considered nature’s stealth fighters, and it turns out their ability to silently is a result of a unique wing structure not found in …

University of Cambridge

These earbuds don't play music, but they let you customize how the world sounds around you

What if you could tweak and customize the sounds of the world around you?<p>That's the goal of a new Kickstarter project for the Here Active Listening System, which is basically a pair of earbuds designed to filter and process the sounds of real life.<p>The idea with the Here earbuds is to allow you to …

Headphones

Using traffic noise to find hidden SINKHOLES: Vibrations from cars and pedestrians help create underground maps of cities

• <b>Geophysicists have created 3D maps of the ground beneath Los Angeles</b>• <b><br>They harnessed the tiny seismic waves produced by human activity</b>• <b><br>They hope the</b> …

Processing pump data – a classic case of amplitude modulation

When dealing with some vibration data from a pump, we observed some strange phenomena in the data. It turned out to be a classic case of amplitude …

Physics

Big Question: Why Can Silence Make You Hear Things That Aren't There?

You've probably never encountered real silence. Finding a place that remains sonically unmolested by the roar of commercial jets or the steady hum of …

Android Audio's 10 Millisecond Problem: The Android Audio Path Latency Explainer

<b>Analog audio input</b> <i>↓</i><p><b>Analog audio input</b><p>There may be several different analog components, such as a pre-amplifier for the built-in microphone. These …