Sound Intensity Measurements
Provides on-site, accurate results for product research and testing as well as various complex environmental or industrial noise issues.
http://www.soundintensity.com

Industrial Noise Control Inc.
Industrial Noise Control manufactures high performing industrial noise reduction and soundproofing products and structures used to solve the most common to complex noise control applications
http://www.industrialnoisecontrol.com/

Salzenstein, Patrice
PhD research engineer in time and frequency metrology, featuring phase noise measurements, and the spectral domain for microwave, based in Besançon, France.
http://www.lpmo.edu/~salzenst/english.html

Marshall Day Acoustics
Acoustics and noise engineering consulting firm that provides acoustical, environmental noise, and noise control design services, including concert hall and auditorium design, environmental noise assessments, and building services and industrial noise control.
http://www.marshallday.com/

Applied Dynamic Measurements
Manufacturer and supplier of precision acoustic weighting networks, filters, and signal conditioning. Noise, vibration and torsional vibration measurement and analysis.
http://www.admnetworks.com

Gear Noise Short Courses
GearLab - Gear Dynamics and Gear Noise Research Laboratory
http://www.gearlab.org

Associates in Acoustics, Inc.
Consulting firm in industrial noise measurement, engineering noise control and hearing conservation programs. Includes noise manual downloads and resource links.
http://www.esion.com/

NexGen Ergonomics
Software and tools for job analysis, data acquisition, movement analysis, EMG, noise analysis, temperature sensing, vibration analysis, and anthropometric measurements.
http://www.nexgenergo.com/

NoiseMeters.com
Sound level meters, noise dosimeters and environmental noise monitors. The online shop from NoiseMeters offers buyers professional advise on product selection.
http://www.noisemeters.com/

Industrial Noise Control
Industrial Noise Control manufactures high performing industrial noise control materials, sound proofing and noise control products, acoustical panels, and dyno testing to solve the most common to complex noise control applications
http://www.industrialnoisecontrol.com