• 01dB - PC-based noise & vibration meas, sound field prediction sofware

• AcSoft - Acoustic & Vibration Analysis Systems, UK

• AcSoft - sound & vibration measurement systems

• ACO Pacific Measurement Mic Systems

• Acoustics Engineering - develop systems for the prediction and measurement of acoustical parameters

• Acoustics First - products for all types of sound and noise control

• Acoustisoft (ETF Software) - PC-based MLS measurement equipment

• Advanced R &D in Acoustics - products for testing of hearing, testing of CD players, Digital Speech Aid for Stutterers, etc

• Audio Precision - PC controlled audio measurement systems

• Bruel & Kjaer - sound measurement products

• CEL Instruments -noise/sound measurement eqiupment

• DPA Microphones - Series 4000 Microphones -mfctr. of the microphones formerly known as B&K Series 4000 Microphones,"Microphone University"

• Earthworks Audio Products

• GEERS acoustics - German

• HpW Works FFT Spectrum Analyzer - MS Windows

• Josephson Engineering Microphones

• Landmark Sound Labs - Electro-acoustic design and test services, product development, audio consulting

• Larson Davis Laboratories

• LVDT Displacement Transducers - LVDT's for many different applications

• Machina Dynamica - "manufactures the world's best (arguably) vibration isolation platform"

• The Modal Shop Inc. - precision sound & vibration measurement equipment sales/rental

• NWAA Labs - "Complete High-speed Speaker and Material Testing" Santa Clarita, CA

• Norsonic - manufacturer of precision sound measurement equipment

• Odin Metrology, Inc - for NIST-tracelable calibration of acoustical instruments, California

• OROS - PC-based singal analyzers

• PCB Piezotronics - accelerometers

• Polytec PI - vibration analysis products

• Prefer Ummels BV German

• Pro Audio & Bioacoustics Glossary

• Prosig

• Ptolemy Services - Noise Monitoring Software

• PureBits.com - home of Sample Champion, software tool designed for high precision acoustic measurements

• Quest Technolgies - manufacturer of precision sound level meters

• R.C. Electronics Inc. - multi-channel singal analysis

• Rion Co - sound & vibration instrumentation

• Scantek - sound and vibration instrumentation sales & calibration since 1985

• SenSound - acoustic holography systems

• Signalogic

• Sony Precision Technology - Sony professional data recorders

• Sound Acquisition/Analysis System Database

• Sound Technology Inc - acoustic and vibration instrumentation products

• Sound Technology, Inc.

• Standford Research Systems - signal/frequency analyzers

• Systems Development Group

• TEF-20 product info

• Technology for Measurement, Inc. - manfacturer's rep for acoustic/vibration measurement equipment

• Tektronix Audio Measurement

• TerraSonde - manufacturer of the AudioToolbox

• Test & Measurement World

• ViAcoustics - products and services to address product noise and acoustic measurement applications

• West Caldwell Calibration Labs - for NIST-tracelable calibration of acoustical instruments, New York