acoustical design

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 engineeringaudio/visual systems designAV infrastructure planning and designAV technology master planningmeasurementmodelingnoise and vibration isolationnoise and vibration measurementnoise and vibration mitigation

Cali U.S.A. Acoustics Inc. is a family-owned acoustical contractor company based in Thousand Oaks, California, organized in 1983 by Mr. Diego Velasquez. It installs acoustical ceilings and walls for commercial, industrial, theatrical, medical, government, institutional buildings, production sets, and residential projects, serving much of California with a team of about 50 employees.

acoustical ceiling installationacoustical wall installationinsulation installationstretch fabric wall systemssuspended ceiling repair and installationvalue engineering

Colin Gordon Associates was formed in March 1990 and provides specialized consulting services in acoustics and vibration control. The firm designs low-vibration and low-noise environments for technological buildings and works worldwide, serving as part of architect/engineer design teams, directly with owners, or as peer reviewers and monitors.

analytical modelingconstruction vibration monitoringenvironmental noise modelingfinite element modelingHVAC noise analysisisolation system evaluationmodal testingnoise controlstructural analysis and evaluationvibration and noise measurementvibration control