Noise, Vibration, and Harshness (NVH)
Acoustics

Latest Stories

News
Manufacturing & Prototyping

WCX 2023: Biomimicry Inspires Product Development

Nature has always served as a giant classroom where problem-solving lessons are taught — a “storehouse of inspiration for new and different ideas,” noted Trisha Brown, co-director...

Feature Image

Technology Report
Sensors/Data Acquisition

Turning the Vehicle into a Giant Microphone

When an emergency vehicle is approaching but its blaring siren isn’t heard by nearby motorists, all are put at risk. Engineers at Harman International have developed novel sensor technology...

Feature Image

News
Power

Electrification Forces Fresh Perspectives on Vehicle NVH

The quietness of EVs is, for many, a compelling selling point. But vehicles becoming inherently quieter overall hasn’t translated into making the job of noise abatement any...

Feature Image

Technology Report
Automotive

Expanding the ‘Bubble’ of Cabin Acoustics

Noise cancellation has been a viable technology for many years, used on board turboprop aircraft to counter engine noise and familiar to consumers when applied to headphones to reduce...

Feature Image

Application Briefs
Unmanned Systems

Underwater Acoustic Communication System

DSIT Solutions Givat Shmuel, Israel
+(972-3) 531-3333
www.dsit.co.il

DSIT Solutions recently launched WhitePointer, a state-of-the-art underwater acoustic communication system that enables...

Feature Image

Briefs
Test & Measurement

Formal Process Modeling to Improve Human-Decision-Making During Test and Evaluation Range Control

Innoslate software tool formally models the process of conducting test range events.

Feature Image

Articles
Unmanned Systems

Using Low-Frequency Broadband Sonar on UUVs

A number of science and technology efforts are helping to deliver new combat capability to warfighters.

Feature Image

Application Briefs
Sensors/Data Acquisition

Portable Diver Detection Sonar System

DSIT Solutions Ltd., recently supplied a NATO country with its PointShield Portable Diver Detection Sonar (PDDS) system.

Feature Image

News
Nanotechnology

Metamaterials R&D Targets NVH Abatement

Acoustics engineers have a broad variety of materials from which to choose for reducing noise, vibration and harshness (NVH) in vehicles. But their selection often comes with a measurable...

Feature Image

Application Briefs
Sensors/Data Acquisition

Towed Array Sonar System

The SwordFish™ is capable of underwater target search, detection, tracking, and classification.

Feature Image

Application Briefs
Defense

Underwater Signal Processing System

A Portable Acoustic Range system measures noise radiated by submarines, as well as surface vessels.

Feature Image

Briefs
Sensors/Data Acquisition

Green’s Function Extraction from Atmospheric Acoustic Propagation

Understanding what affects acoustic waves propagating in the atmosphere is important for a variety of military applications.

Feature Image

Briefs
Mechanical & Fluid Systems

Sound Attenuation of Neoprene Wetsuit Hoods as a Function of Dive Depth and Acoustic Frequency: Hyperbaric Chamber Trials

The U.S. Navy is interested in strategies that divers could employ to protect them from loud underwater sounds. Sonar...

Feature Image

News
Power

2020 Explorer Will Be First Product to Emerge – More Quietly – from Ford’s Newest NVH Lab.

The 2020 Explorer will be the first Ford product engineered via the automakers new driving dynamics laboratory, which provides multiple...

Feature Image

News
Automotive

NASA Picks Lockheed to Build Low-Boom X-Plane

In April, NASA took another major step toward reintroducing supersonic flight with an award to Lockheed Martin Aeronautics Company to design, build, and test a supersonic aircraft to reduce...

Feature Image

News
Manned Systems

Made in Space to Increase Material Portfolio After Two Years of Printing in Space

Made In Space, Inc. (MIS) is celebrating the two-year anniversary of the Additive Manufacturing Facility (AMF) printing onboard the International Space...

Feature Image

News
Manned Systems

X Marks the Spot

LiquidPiston Inc., an advanced internal combustion engine (ICE) technology company, has reimagined combustion engines with a new platform that can run on multiple fuels, including diesel, jet fuel, and gasoline. This...

Feature Image

Articles
Aerospace

Using Sintered Fiber Metal Composites for Aircraft Acoustic Attenuation

Sintered fiber metal composites are used in aircraft as an acoustic media within environmental ducting, inlet and exhaust systems. The material can be engineered to meet...

Feature Image

Briefs
Photonics/Optics

Stimulated Brillouin Scattering (SBS) Suppression and Long Delivery Fibers at the Multikilowatt Level with Chirped Seed Lasers

One obstacle in the scaling of high-power fiber lasers arises because of nonlinear effects (e.g., stimulated...

Feature Image

Application Briefs
Defense

Hull Vibration Monitoring System

Brüel & Kjær
Nærum, Denmark
+45 7741 2000
For more info click here

BAE Systems has awarded Brüel & Kjær a Design Development Agreement to deliver a Hull Vibration Monitoring...

Feature Image

Application Briefs
Defense

Optical Muzzle Flash Detection Sensors

An optical detector technology from Cal Sensors detects muzzle flash from over 100 meters away. Operating at the speed of light, optical flash detection systems provide an almost instantaneous response...

Feature Image

Briefs
Materials

Nonlinear Acoustic Metamaterials for Sound Attenuation Applications

An acoustic crystal composed of tightly packed spherical particles can exhibit a wide spectrum of acoustic properties with responses varying from linear to highly nonlinear...

Feature Image

Briefs
Physical Sciences

Acoustic Detection Using Reverberation

Acoustic detection of undersea objects is difficult due to the uncertain environment and even more difficult when the objects are buried in the seabed. First, sediments generate high backscattering noise due to heterogeneous scatters within the sediments, clouding the object.

Briefs
Electronics & Computers

Dense Transducer Array

A dense transducer array is an acoustic transducer with relatively high operational bandwidth. It includes a cable harness component that provides and organizes various conductors within piezocomposite substrates to form transducer arrays with minimum impact on electroacoustic performance. Several underwater sonar...

Briefs
Physical Sciences

Battery Electrolyte Level Detector Apparatus

An apparatus has been developed for checking the electrolyte level in a battery, providing a safer and more efficient means to do so. The result is a non-intrusive apparatus and method of checking the electrolyte level that reduces the need to open the caps on the battery by checking the level...

Briefs
Physical Sciences

Outdoor Synthetic Aperture Acoustic Ground Target Measurements

A novel outdoor synthetic aperture acoustic (SAA) system consists of a microphone and loudspeaker traveling along a 6.3-meter rail system. This is an extension of a prior indoor...

Feature Image

Briefs
Materials

Flexible Biohybrid Nanomembranes for Multifunctional Sensors

A document describes recent activities in a continuing effort to develop devices, based on biohybrid nanomembranes, that would perform diverse sensory functions. The term "biohybrid nanomembranes" signifies flexible organic/inorganic composite membranes, of the order of tens of...

Briefs
Materials

Low-Water-Permeability Encapsulants for Acoustic Sensors

Afamily of improved encapsulating materials for protecting underwater acoustic sensors has been invented. These materials could also be used for encapsulation or protective coating of...

Feature Image

Briefs
Materials

Castable, Relatively Stiff Acoustic-Damping Materials

A recently invented family of acoustic-damping materials offers advantages over prior acoustic-damping materials: