YERGES ACOUSTICS is a consulting firm specializing in sound, noise, and vibration
control engineering. Services offered include:
Architectural acoustics: Commercial and office buildings, open plan office facilities
and masking sound systems, schools, hospitals, hotels, apartments, condominiums,
performing arts spaces including theaters and auditoriums, arenas and coliseums,
broadcast and recording studios, houses of worship, airports, HVAC noise and
Sound reinforcement and intercommunication systems for performing arts facilities,
auditoriums, churches, and sports and entertainment complexes.
Environmental noise: Aircraft and traffic noise studies, HUD and coinsurance
measurements and documentation, neighborhood noise and community noise ordinance
Product development: Design of quiet products, purchase specification compliance,
noise and vibration testing facilities, and materials and systems for noise control.
Industrial noise control: OSHA noise surveys, control of noise and vibration in new
and existing manufacturing facilities.
Technical documentation: Acoustical design methodologies & acoustical product
Education, training, and seminars.
Measurement & analysis: Sound & vibration measurements, environmental descriptors,
real-time analysis in 1/24, 1/12, 1/3, & 1/1 octaves, FFT, sound intensity, sound power,
and FSTC and FIIC tests.
YERGES ACOUSTICS serves a clientele ranging from Fortune 500 corporations and major
international design firms to sole proprietor architects and individual church
congregations. The project may be an oil refinery or a cathedral, a steel mill
or a concert hall.
Principal consultants John and James Yerges have been actively involved in acoustics
since they were children. Their father, Lyle F. Yerges, was an internationally
renowned acoustical engineer, author, lecturer and editor. The brothers often
accompanied him to lectures, and served their apprenticeship on measurement trips
and noise studies.
John R. Yerges earned the Bachelor of Science degree in Engineering Mechanics from
the University of Illinois in 1973. He graduated as a James Scholar with High
Honors, and was inducted into the Tau Beta Pi honorary fraternity. He completed
the Master of Science degree in Theoretical and Applied Mechanics in 1975, and left
the University to join Industrial Noise Control, Incorporated. As the Manager of
Technical Services for INC, John was responsible for design and development of new
products, product applications, system design, manufacturing systems development,
and consulting services. He then joined United McGill Corporation as national
Technical Sales Manager for the Acoustical Products Division. In that position,
he provided the technical expertise necessary to support a national sales
organization. He now serves as a principal consultant for YERGES ACOUSTICS.
James F. Yerges earned the Bachelor of Science degree in Engineering Mechanics
from the University of Wisconsin in 1971. In 1973 he earned the Master of Science
Degree in Engineering, and in 1980, the Ph.D. in Mechanical Engineering also from
the University of Wisconsin. Dr. Yerges was elected to the Sigma Xi Scientific
Research Society in 1976. Dr. Yerges' practice concentrates principally on
architectural acoustics and sound reinforcement, with particular emphasis on
the application of state-of-the-art signal analysis and digital measurement
A prolific author, Dr. Yerges' publications have appeared in acoustical journals
including Sound and Vibration and Noise Control Engineering, but his work also
appears in publications as diverse as Creative Computing and Reformed Liturgy
& Music. His professional affiliations include the Acoustical Society of America.
Dr. Yerges has served as a visiting lecturer at Washington University,
the University of Notre Dame, the Air Force Institute of Technology, and the University
of Illinois at Chicago.
Many years ago, Lyle stated the fundamental philosophy which still guides
"Be available and be reliable. Provide practical, workable solutions at a realistic
We hope to have an opportunity to work with you in the near future.
CONSULTANTS IN SOUND, NOISE, AND VIBRATION