Testing Futuristic Fighter Jets
Collaborating with Lockheed Martin for many years, Brüel & Kjær is supporting the demand for ‘right-first-time’ engineering and supplying reliable, high-quality, goal-focussed solutions for noise and vibration testing and analysis. This partnership is helping ensure the high performance of some of the most technologically sophisticated machines ever built.
The Longest Reverb
In 2014, acoustics expert Trevor Cox crawled through a narrow pipe into a subterranean oil tank in Inchindown, Scotland. One gunshot and 75 seconds later, he had set a new world record for the longest echo in a man-made structure. Learn more about reverberation time, and listen to the record-holding gunshot in the underground chamber.
Anatomy of the Human Ear
The human ear anatomy is a complex system – also called the auditory system – consisting of three distinct parts, each with a specific role in the process of picking up and analysing sound. The outer ear collects sound, the inner ear transmits the sound into neurological signals that can be processed by the brain, and the middle ear provides acoustic coupling to the tympanic membrane.
Cochlea Function: A Closer Look at the Ear
In this second article on the anatomy of the human ear, we look at the process of transforming sound from mechanical vibrations into neurological signals. We take a closer look at the cochlea, and the cochlea function in relation to the hair cells located in the inner and outer ear that control our hearing sensitivity.
The Fauna Philharmonics
They howl, thump, bang, chirp and rumble. The sound and vibration repertoire of these animals would indeed make an interesting symphony. Key to their survival, these weird and wonderful creatures use sound and vibration to navigate, hunt, communicate, attract mates and ward off predators.
Not so Long Ago in a Movie Right by You....
The sound of explosions, vehicles, weapons, rustling trees and even breathing – in one famous case – are carefully orchestrated elements that can make or break the audience’s immersion. But particular real-life noises might be kind of underwhelming, so where does that perfect sound come from?
The Acoustic Properties Of A Ripe Watermelon
Many of our customers are engineers, and the different applications they explore outside the scope of their daily work are quite extraordinary.
Fusing Form and Function In Room Acoustics
Keith Yates and his team have been engineering purpose-built director screening rooms and private theatres for 26 years, serving an international client base that ranges from well known directors, to private, unknown movie lovers.
The Father of Dolby Technology
Learn about the pioneering legend who revolutionized the recording industry with Dolby Technology in this article.
Savings in The Pipeline
According to the EU, one of our most promising untapped sources of renewable energy is the energy we can save by mitigating leakage and waste. Arne Jensen is at the forefront of harnessing wasted energy with his acoustic technology that detects and stops leakage in district heating systems – before it even begins.
Wavelength to Frequency, and the Speed of Sound
When you play music through a loudspeaker, the loudspeaker’s membrane is set in motion, alternately moving in and out. On its way out, the membrane compresses the air right in front; when moving back into the loudspeaker cabinet, it leaves more space for the air in front, causing it to rarefy.
Anechoic Chambers: MSC Application Resarch Center (ARC)
For the past decade, the MSC Application Research Center (ARC) - a unique noise and vibration solution facility - has provided state-of-the-art NVH testing capabilities for a broad range of projects. This year, the ARC, located just outside Detroit, Michigan, celebrates its 10th anniversary.
Something quiet this way comes
Traditionally pass-by noise measurement is a requirement for all automotive manufacturers as part of product certification, with measurement procedures defined in local and regional standards to ensure that noise levels are not exceeded, but times change. The introduction of extremely quiet electric vehicles (EVs) and hybrid vehicles (HVs) introduces more changes and challenges than just a different propulsion method; ‘too loud’ now only covers half of the problem.
My car. My engine. My sound
There’s not a cloud in the sky, and the empty highway beckons through your windshield. You nudge the pedal closer to the floor, and the roar of the engine feels like joy. But who decides how that roar sounds?
All quiet on board
Noise is a significant issue for anyone working on ships. Even moderate noise and vibration can affect comfort and lead to a drop in performance. Professor Hideyuki Shuri, an authority on ship noise, has been working for many years to overcome the challenges.