Practical acoustics education, measurement references and calculators from On-Site Acoustic Testing. Learn how to interpret ratings and when independent field measurements are needed.
Understand Acoustical Ratings
- Acoustic Standards & Ratings Reference — searchable reference organized by measurement discipline, including NIC, NNIC, OINIC, ASTM and ISO methods.
- OITC Rating Guide — outdoor-to-indoor ratings, charts and field measurements.
- STC, ASTC and NIC Field Testing — airborne sound isolation.
- IIC and AIIC Testing — impact sound isolation.
- Acoustics Glossary — technical definitions.
Interactive Calculators
Acoustic Calculators includes sound-level addition, distance attenuation, wavelength, and reverberation estimates. These are educational estimates, not substitutes for measurements or applicable standards.
Transmission loss and sound leakage calculators explain why weaker components and openings can dominate a completed partition.
Testing Standards and Field Methods
Explore measurement capabilities and methods, ASTM E966 façade testing, and the standards reference. ASTM, ANSI/ASA, ISO, IEC and IEEE standards are distinct and should not be treated as automatically equivalent.
Field Applications
See case studies, commercial acoustics testing, reports and deliverables and test-tone downloads.
For a project-specific testing scope, contact OSAT.
