Acculab - Reference sound sources

ACO - Precision microphones and systems

BSWA - Transducers for measuring sound, building acoustics parameters, and transducer connecting.

Castle - Advanced sound solutions

Causal Systems - Engineering noise control software and support.

CESVA - Instruments for measuring, analyzing, and controlling noise

DataKustik - CadnaA and CadnaSAK-Software - Computer Aided Noise Abatement, BASTIAN Software for Analytical Analysis of Building Systems

Dytran - Accelerometers, force sensors, and pressure sensors

Extech - Noise and vibration instrumentation at budget prices

Informex - Publishers of "Road Tyre Noise"

KCF Technologies - Inexpensive instruments for noise & vibration measurements

Metra - Vibration Transducers, power supplies, exciters, and accessories

Norsonic - Suppliers of precision instrumentation for acoustics since 1967

Quadcomm Associates Inc. - Southeast United States Representative

RION - Sound and Vibration instrumentation since 1944

Topsonic - Aircraft Noise, Flight Track, and Environmental Monitoring