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

International Flavors & Fragrances

Client Name: International Flavors & Fragrances

Project Location:
Dayton, New Jersey


  • Sound Pressure Level Measurements
  • Develop Employee Noise Exposure Criteria
  • Noise Control Recommendations

Lewis S. Goodfriend & Associates compled an acoustical analysis of the sound emanating from a spray dryer at International Flavors & Fragrances. Measurements were performed on site, and design goals were established that would only require the use of in-ear sound protection by employees. LSG&A provided sound mitigation recommendations for the spray dryer vibrator system in order to meet the design goals for this project.