acoustical engineering

ABD Engineering & Design is an independent acoustical engineering and audiovisual design firm founded in 1962, with offices in Grand Rapids, Michigan and Portland, Oregon. The firm provides consulting in architectural acoustics, environmental and industrial noise and vibration control, and audiovisual systems design for architects, building owners, facility managers, and municipalities across the United States, Canada, and other international markets.

acoustical designaudiovisual systems designAV infrastructure planning and designAV technology master planningmeasurementmodelingnoise and vibration isolationnoise and vibration measurementnoise and vibration mitigation

Acoustical Systems, Inc. is an acoustical engineering, design-build, and consulting firm incorporated in Ohio on August 1, 1977, serving clients nationally from Dayton, Ohio. It specializes in noise control solutions for architectural, commercial, environmental, and industrial markets, providing acoustical testing, analysis, engineering, and design services.

acoustical analysisacoustical field testingconstruction site inspectionsdesign-buildnoise controlpredictive noise mappingProgram Management

Blue Ridge Research and Consulting, LLC (BRRC) is an acoustical engineering firm focused on critical noise and vibration challenges for Department of Defense, aerospace, aviation, and industrial clients. BRRC delivers solutions to acoustic and vibration projects, with expertise ranging from military and civilian environmental noise studies to the design of custom measurement systems and the development of mission planning tools.

Acoustic modelingaeroacousticsarray signal processingComputational Fluid Dynamics (CFD)environmental impact studiesGIS data analysismachine learningnoise and vibration measurementsoftware development