Business Details
50+ Years
experience
Acoustical Engineering & Consulting Services
Lewis S Goodfriend & Associates has been a leader in acoustical engineering and consulting for over 70 years. Our team of licensed Professional Engineers and INCE Board Certified experts specializes in noise and vibration control, room acoustics, and sound isolation solutions for commercial, industrial, and residential projects. We provide comprehensive services including noise impact assessments, OSHA compliance studies, and expert witness testimony for legal proceedings. Our firm maintains technical excellence through active membership in professional societies such as the Acoustical Society of America and the Institute of Noise Control Engineering. We have served as consultants to federal agencies including the EPA and U.S.Department of Housing and Urban Development. Our staff holds certifications under NJDEP and NYCDEP noise regulations and we are a registered New Jersey Small Business Enterprise. With offices in Chester and New York City, we combine decades of experience with cutting-edge technology to deliver precise acoustical solutions. Our engineers have provided expert testimony in hundreds of cases before municipal boards and state courts. We maintain ANSI Type 1 sound measurement equipment calibrated to NIST standards for accurate field testing. Our work supports compliance with industry standards including LEED, FGI, and ANSI acoustical guidelines.
Services
Noise and Vibration Control
Sound Isolation Testing
Room Acoustics Design
Expert Testimony Services
Impact Assessments
Details
- Year established: 1953
Highlights and features
- We offer 70+ years of specialized acoustical engineering experience
- Our team includes INCE Board Certified engineers and NYCDEP-approved experts
- We provide expert witness testimony in regulatory and legal proceedings
- We use NIST-traceable calibration and ANSI Type 1 measurement equipment
- Our solutions ensure compliance with LEED, FGI, and ANSI standards
Associations and certifications
- INCE Board Certified
- NYCDEP Approved Noise Experts
- National Council of Acoustical Consultants Member Firm
- Rutgers Community Noise Enforcement Certification
Services
Noise and Vibration Control
We measure, evaluate, and control noise and vibration in interior and outdoor environments. Our engineers use advanced modeling software and field measurements to ensure compliance with federal, state, and local regulations. Services include OSHA noise exposure studies, environmental impact assessments, and HVAC noise control for commercial and industrial facilities.
Sound Isolation Testing
We conduct field testing for sound transmission class (STC) and impact isolation class (IIC) ratings using ASTM standards. Our team evaluates building assemblies for code compliance and provides recommendations to improve performance. Services include laboratory data analysis and value engineering guidance for construction projects.
Room Acoustics Design
We optimize reverberation times (RT60) and sound absorption for spaces including auditoriums, worship facilities, and healthcare environments. Using ray-tracing software and material absorption data, we develop solutions that meet ANSI, LEED, and FGI guidelines for speech intelligibility and occupant comfort.
Expert Testimony Services
Our licensed engineers provide expert witness testimony for land use hearings and court cases. We evaluate noise impacts from industrial facilities, transportation infrastructure, and commercial developments, offering technical analysis to support regulatory compliance and dispute resolution.
Impact Assessments
We conduct environmental noise studies to assess impacts on residential areas from power plants, warehouses, and transportation corridors. Our reports document compliance with HUD guidelines and local noise ordinances, including mitigation strategies for data centers and telecommunication facilities.
People
Matthew T. Murello
President
President and licensed Professional Engineer with over 25 years of acoustical consulting experience. Specializes in noise impact assessments and expert testimony for industrial and commercial developments. Leads technical staff in complex acoustical projects.
Jack A. Zybura
Associate Principal
INCE Board Certified engineer with expertise in room acoustics and sound isolation testing. Provides technical leadership for LEED-certified projects and healthcare facility noise control solutions. Active member of Acoustical Society of America.
Michael J. Dick
Project Manager
Licensed Professional Engineer managing commercial construction acoustics projects. Specializes in HVAC noise control and building code compliance. Coordinates field testing and mitigation design for multi-family residential developments.
C.J. Smith
Staff Engineer
Supports noise modeling and measurement projects for industrial facilities. Conducts OSHA compliance studies and environmental impact assessments using advanced acoustical instrumentation. Assists in expert report preparation.
Nancy Held
Office Manager
Manages administrative operations and client communications for the Chester headquarters. Coordinates project scheduling and maintains quality assurance documentation for acoustical testing services.
Questions
What acoustical services do you specialize in?
We specialize in noise and vibration control, room acoustics design, sound isolation testing, expert testimony, and impact assessments for commercial, industrial, and residential projects.
How long have you been in business?
Our firm has provided acoustical engineering services since 1953, with over 70 years of combined experience among our current team members.
Do you provide expert testimony services?
Yes, our licensed engineers have provided expert testimony in hundreds of cases before municipal boards, state courts, and federal agencies since our founding.
What certifications do your engineers hold?
Our staff includes INCE Board Certified engineers, NYCDEP-approved noise experts, and professionals with Rutgers Community Noise Enforcement Certification.
Which industries do you serve?
We serve commercial construction, healthcare, education, power generation, transportation, and residential sectors with tailored acoustical solutions.
What measurement equipment do you use?
We use ANSI Type 1 sound level meters with NIST-traceable calibration for precise field measurements, including octave band analysis and long-term monitoring.
