| Measurement—Highway, railway/railroad, aircraft/airport, mining, power plant, industrial facility, and equipment noise. Workplace noise exposure and dosimetry. Ambient noise and vibration surveys. Room acoustics—reverberation time, field transmission loss and noise isolation, audible alarm testing. Groundborne and building vibration measurement. Source noise-emission testing. Machinery vibration analysis. HVAC system evaluation. Sound-intensity testing.
Prediction—FHWA/highway, FTA/railway, FRA/railroad, and HUD/highway-railway-airport, industrial, process plant, power plant, and mining/construction site modeling and noise predictions. Environmental noise assessment and environmental impact statement (EIS) studies. Architectural and HVAC system analysis.
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Research—Machinery and product development and testing. Engineering-design analysis. Sound intensity measurement—including on-board-vehicle tire-pavement interaction testing. Test facility design, qualification, and calibration. Frequency-band statistical analysis. Multi-channel narrowband spectral measurement. Noise effects evaluation.
Control—Component source identification, redesign, and modification. Building exterior-to-interior and interior-to-interior soundproofing enhancement. Treatment design—barriers, lagging, and enclosures; room sound absorption; vibration isolation and damping. Fan noise control and HVAC system quieting.
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