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Noise/ Acoustics, Ultrasound and Vibration  
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Acoustics Careers and Research Areas
The field of acoustics, because it is so diverse, offers many different career opportunities.
Acoustics FAQ
A Newsgroup FAQ document intended to answer frequently asked questions about acoustics.
Architectural Acoustics and Lighting
Acoustic and lighting definitions and concepts. Reference for architects and interior designers.
ARS TECHNOLOGIES
Development, production and sales of systems in the fields of radar and sonar technology as well as consultancy work.
Art Ludwig's Home Page
Information concerning acoustics.
Beyond Discovery: Sounding Out the Ocean's Secrets
Researchers today apply their knowledge of how sound travels through water to carry out a myriad of tasks such as detecting underwater eruptions, measuring ocean temperature, and monitoring marine mammals behavior.
Dynamic Musical Spectrograms
Describes a type of dynamic spectrogram suitable for looking at music.
Glossary Of Acoustic Terms
Defines common terms in noise control engineering.
Hearing Damage And Loud Music
Document on the relationship between loud noise and ear damage, with particular reference to young people and loud music.
Imagine
Project to develop new calculation methods for railway, road, industrial and aircraft noise, run by European consortium.
Introduction to Spectrum Analysis
Introduction to audio spectrum analysis.
Mechanical Acoustics/vibration Engineering Forum at Eng-tips
Engineering technical support forums and mutual help system for engineering professionals.
Mine Neutralization System (AN/SLQ-48)
Unclassified description of mine warfare vehicle.
Modal Analysis Tutorials
Free articles on the fundamentals of modal analysis.
Music and Physics
View an music which a priori is conceived only subjectively.
NewLeap Ltd
Develops acoustical hardware and software for scientific research in the underwater environment, including a bio-acoustic monitor allowing the recording of cetacean echo-location signals.
Particle Velocity Acoustical Sensors
Overview of the microflown technology to measure the entire range of acoustical properties like particle velocity, sound power and ( three dimensional ) sound intensity
RDA Inc
Specializing in Sonar, R&D systems, anti-submarine warfare (ASW), and acoustics engineering.
Sound and Vibration Magazine
Information for subscriptions, and review of recent issues and events affecting noise and vibration control.
Sound as a Weapon
Opinions on using sound as a weapon.
Sound Waves and Music
The physics classroom
Sound Waves and the Eardrum
Glenbrook South Physics Home Page.
Stanton Scattering Lab Homepage
Sound as a tool to study the ocean environment. How zooplankton scatter sound and models to predict plankton populations in the wild.
The Theory of Sound, Chapter 1 - Lord Rayleigh
Internet version of Chapter 1 of The Theory of Sound by Lord Rayleigh (published in 1877). Chapter 1 is an introduction to acoustics which reveals Rayleigh's strong interest in musical acoustics and the Helmholtz resonator. One or two slight errors are apparent and there are minor inaccuracies in the table of musical note frequencies.
Underwater Acoustics Tutorial
Brief overview of the basic principles of underwater acoustics
Vibration and Waves Animations
Dan Russell, Ph.D., Associate Professor of Applied Physics at Kettering University in Flint, MI
Vibrationdata.com
Consulting and educational services in: acoustics; shock and vibration; signal processing; and dynamic data acquisition and analysis.
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