Noise, Vibration, and Harshness (NVH)

Noise

Stories

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Briefs: Communications
The researchers anticipate that with multiplexing techniques (where more than one channel can be used) and more sensitive receivers, the data rate can be increased to 1 terabit per second, ushering in a new era of near-instantaneous global communication. Read on to learn more.
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Briefs: Photonics/Optics
Researchers at Chalmers University of Technology have developed an optical amplifier that they expect will revolutionize both space and fiber communication.
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NASA Spinoff: Aerospace
Wireless microphone array quickly, cheaply, accurately maps noise from aircraft and much more.
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Briefs: RF & Microwave Electronics
Researchers from Japan have developed DPPFA–Net, an innovative network that overcomes challenges related to occlusion and noise introduced by adverse weather.
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Q&A: Sensors/Data Acquisition
Distinguished Professor of Mechanical Engineering Ron Miles and his team at Binghamton University, New York, have developed an entirely new microphone technology based on research into how spiders hear.
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Briefs: Photonics/Optics
Researchers at Boston University recently developed a novel deblurring algorithm that improves the resolution of images with photon intensity conservation and local linearity.
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Briefs: Aerospace
Researchers from MIT’s Computer Science and Artificial Intelligence Laboratory (CSAIL) have introduced a method for robust flight navigation agents to master vision-based fly-to-target tasks in intricate, unfamiliar environments.
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Briefs: AR/AI
Digital data is subjected to errors when stored or transmitted due to the effects of noise on the medium or communication channel.
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Briefs: Aerospace
Statistical Audibility Prediction Algorithm
Predicting the extent that one sound is heard over another is difficult, yet could help engineers to better design for sound management.
Articles: Imaging
There are multiple technologies based on the ToF concept. Generally, all of them are synchronized with a light source and estimate the distance by calculating the time taken for the light to travel from the camera to the object and then back again.
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Briefs: Aerospace
Acoustic optimization for anti-phase asymmetric rotor.
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Briefs: Photonics/Optics
Optical Signals can be retrieved from inherent background noise using Talbot effect to amplify them.
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Briefs: Materials
The low-density, graphene-based aerogel could make aircraft as quiet as a hairdryer.
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Articles: Aerospace
Metamaterial printing, high-efficiency solar cells, and a noise-reduction material.
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Briefs: Motion Control
Vibration-absorbing resonators could better soundproof walls and make vehicles more streamlined.
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NASA Spinoff: Sensors/Data Acquisition
A NASA microphone that detects unseen air turbulence is lofted to high heights aboard a stratospheric glider.
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Articles: Test & Measurement
An R&D project indirectly leads to potentially greater power density, EV range, and battery life.
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Briefs: Wearables
The app detects fluid behind the eardrum using a piece of paper and a smartphone’s microphone and speaker.
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Briefs: Sensors/Data Acquisition
Applications include monitoring of earthquakes and tsunamis as well as manmade infrasonic sources such as boats.
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Briefs: Imaging
A chip-based technology generates sound profiles with high resolution and intensity to make ultrasound therapy more effective and easier.
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Briefs: Aerospace
High-Fidelity Sonic Boom Propagation Tool
The sBOOMTraj software tool predicts and mitigates ground noise generated during supersonic flight.
5 Ws: Sensors/Data Acquisition
The smartwatch app identifies sounds that a user is interested in and sends a friendly buzz and information about the sound.
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Briefs: Aerospace
NASA's phase-locked rotors reduce noise.
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Briefs: Aerospace
This trailing edge flap device reduces noise without compromising cruise efficiency or landing lift and stall characteristics.
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Briefs: Aerospace
This technique lowers airstream noise generated at the side edges of deployed flaps, elevons, or slats.
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Articles: Wearables
Heartbeat-based biometrics, sonic-boom displays, and an artificial leaf.
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Briefs: Test & Measurement
Current laser interferometry pressure pulse detection techniques use the shock-induced change in index of refraction to track detonation and/or shock fronts in a single fiber optic by reflecting laser light...
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Briefs: Sensors/Data Acquisition
This technology has applications in sonar, range measuring, directional-force sensors, flow meters, and vibration/noise sensing and control.
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Briefs: Aerospace
In the wake of recent developments that have reduced fan and jet noise contributions to overall jet-engine noise, aircraft designers are turning their attention toward reducing engine core noise....
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