Art Ludwig's Sound Page
All aspects of sound; music, human hearing, sound system design. Room acoustics. A non-mathematical description of sound, and also a rigorous mathematical derivation based on molecular statistics.
http://www.silcom.com/~aludwig/

ANV Measurement Systems
Website for the sole UK distributor of Rion sound and vibration measurement products. The site shows product details and also describes hire, calibration and consultancy services.
http://www.noise-and-vibration.co.uk

The History of Sound Recording Technology
The history of audio recording technologies and their impact on society and the economy
http://recording-history.org

Flynn Research
Flynn Research meets the custom measurement and reporting needs of organizations that plan, fund, evaluate and/or deliver programs that impact quality of life.
http://www.flynnresearch.com/

Impact Structures
In this Web site, you get varied informations on the geology, geophysics and petrography of impact structures (meteorite craters) including extensive visual material about impact rocks
http://www.impact-structures.com/

CooolSoft
power mp3 wma wav converter recorder and cutter tools, avi dvd burner free download
http://www.cooolsoft.com/

Bruel & Kjaer
Brüel & Kjær Sound & Vibration
http://www.bkhome.com/

GE Kaye, Inc.
For over forty years GE Kaye has been at the forefront of high accuracy process measurement. From thermal validation and environmental monitoring to sensor calibration and gas turbine testing.
http://www.kayeinc.com

I-mobius
Works in the development and complete production of high impact broadcast sound, picture communications for corporate clients.
http://www.imobius.com/

Polytec
vibration measurement, vibrometry, non-contact measurement, nondestructive testing, quality control, machine vision, radiation measurement, sensors, distributor, representative, optical spectroscopy, lifescience, semiconductor, MEMS, automotive
http://www.polytec.com/