Steve Pettyjohn, Principal
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Steve Pettyjohn is an engineering professional
responsible for overseeing services provided by The
Acoustics & Vibration Group, Inc. (TAVGI). He is
especially proficient at setting realistic goals,
explaining what the purpose is of these goals, and
how sound and vibration factors influence a project.
He has extensive experience in designing facilities
for optimum sound quality, measuring sound,
analyzing data and completing noise impact
statements. Steve analyzes heating, ventilating,
air-conditioning (HVAC) systems for sound
characteristics and vibration isolation; does sound
level surveys to document employee noise
exposures; and designs sound reinforcement
systems and sound paging systems. He executes
vibration measurements for industrial, commercial
and public utility projects and specifies mechanical
equipment systems to meet acoustic and vibration
criteria. In addition, he serves as an expert witness
in cases involving an acoustics issue.
responsible for overseeing services provided by The
Acoustics & Vibration Group, Inc. (TAVGI). He is
especially proficient at setting realistic goals,
explaining what the purpose is of these goals, and
how sound and vibration factors influence a project.
He has extensive experience in designing facilities
for optimum sound quality, measuring sound,
analyzing data and completing noise impact
statements. Steve analyzes heating, ventilating,
air-conditioning (HVAC) systems for sound
characteristics and vibration isolation; does sound
level surveys to document employee noise
exposures; and designs sound reinforcement
systems and sound paging systems. He executes
vibration measurements for industrial, commercial
and public utility projects and specifies mechanical
equipment systems to meet acoustic and vibration
criteria. In addition, he serves as an expert witness
in cases involving an acoustics issue.
Qualifications
Professional Memberships
 | Certified (#81010) by the Institute of Noise Control Engineers, 1981 | |
| Certified (#9403-004B) by the Vibration Institute as Vibration Specialist III, 1994 | |
| Professional Engineer in Acoustics (#19639PE) in Oregon | |
| M. S. from School of Mechanical Engineering's multi-disciplinary acoustics program, | |
| Georgia Institute of Technology, 1979 |
| Included courses in acoustics and vibration from the Departments of Architecture, City | |
| Planning, Psychology, Physics, Electrical Engineering, Geophysical Science, Aerospace Engineering, Solid Mechanics and Mechanical Engineering |
| Certified as an Engineer-In-Training from the state of Georgia, 1976 | |
| B. S. in Mechanical Engineering, Oregon State University, 1972 |
| Completed special projects on engine vibration and chain saw sound |
Professional Memberships
| The Vibration Institute | |
| Acoustical Society of America (ASA) | |
| Institute of Noise Control Engineers (INCE) | |
| American Society of Mechanical Engineers (ASME) | |
| American Society of Heating, Refrigerating and Air Conditioning Engineers (ASHRAE) | |
Steve formed TAVGI in Sacramento in 1986 after he completed seven years of acoustic and
vibration research for Cummins Engine Company–a major international manufacturer
headquartered in Indiana–and five years with acoustic and vibration consulting firms in
Atlanta, Georgia. Since entering the acoustical engineering field, he has completed
hundreds of projects encompassing a wide scope of work. Clients have included
manufacturing and industrial firms, retail businesses and commercial firms, architects,
engineering and mechanical companies, governments and governmental agencies,
developers, contractors, churches, hospitals and schools.
vibration research for Cummins Engine Company–a major international manufacturer
headquartered in Indiana–and five years with acoustic and vibration consulting firms in
Atlanta, Georgia. Since entering the acoustical engineering field, he has completed
hundreds of projects encompassing a wide scope of work. Clients have included
manufacturing and industrial firms, retail businesses and commercial firms, architects,
engineering and mechanical companies, governments and governmental agencies,
developers, contractors, churches, hospitals and schools.
Photo by Bill Mahon
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| The Acoustics & Vibration Group, Inc. * 5765 9th Avenue * Sacramento, CA 95820-1816 * (916) 457-1444 * Copyright © 2007-2014 The Acoustics & Vibration Group, Inc. Last modified: Nov 12, 2014 |