Lewis S. Goodfriend & Associates is a diversified acoustical engineering consulting firm offering professional services in the fields of architectural acoustics; building acoustics; noise evaluation and abatement including environmental, industrial and transportation; HVAC, vibration analysis and expert witness testimony. The firm is registered as a Small Business Enterprise with the New Jersey Commerce & Economic Growth Commission.

With more than 65 years of experience in providing consulting engineering services for a wide range of projects and clients, our engineering staff effectively interfaces with professionals in all disciplines. Our extensive experience includes working with architects, planners, engineers and attorneys, both in the private sector and in government. The firm has worked closely with various industries for many years, having provided services for clients such as K. Hovnanian, Pfizer, Home Depot, Verizon, and Sunoco on a wide variety of projects.

Featured Project

State Theatre at New Brunswick

Client Name: Paulus, Sokolowski and Sartor Engineering, P.C.

Project Location:
New Brunswick, New Jersey


  • HVAC Noise & Vibration Analysis
  • Noise & Vibration Control Recommendations

Lewis S. Goodfriend & Associates completed an acoustical analysis of the proposed HVAC system for the State Theatre in New Brunswick. Engineers from LSG&A visited the site to measure the existing sound pressure levels in the theatre, to assist in developing acoustical design goals for the space. The proposed HVAC system was evaluated with respect to meeting or improving the existing acoustical environment in the space. LSG&A provided sound and vibration control recommendations to meet the acoustical design criteria.