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Harris Miller Miller & Hanson Inc. (HMMH) was founded in 1981 to provide the highest quality noise consulting services to airports.  A spin-off from Bolt Beranek and Newman (BBN), HMMH’s founders worked on some of the earliest, ground-breaking transportation noise challenges, including early work for the Port Authority of New York and New Jersey and Amtrak’s Northeast Corridor.

Today, in addition to our noise practice, HMMH addresses emerging and technologically challenging challenges including air quality analysis, airport and airspace planning, and climate and energy solutions. HMMH is nationally recognized for developing complex solutions for issues affecting our environment.

HMMH Founders 

Andy Harris

Andy Harris, Retired

Andrew Harris began his work in acoustics in the Architectural Acoustics and Noise Control Division of Bolt Beranek and Newman Inc. (BBN).  Harris was a founder of HMMH and was a leader in the firm's airport consulting activities from 1981 to 2000, including as President from 1981 to 1989. In 2000, Mr. Harris left HMMH to start his own consulting practice, Andrew S. Harris, Inc. 


Robert Miller, Retired

Before founding HMMH in 1981, Robert Miller was a U.S. Air Force, F-102 pilot from 1967-1972, and then a senior technical staff member at BBN from 1972-1981. Mr. Miller's career was primarily focused on aviation noise and he was active in all facets of HMMH's aviation consulting practice until his retirement in 2016. 


Nicholas Miller, Retired

Nicholas Miller started his work in environmental acoustics in 1970 at the University of North Dakota, completing a Master’s Thesis based on scale modeling of sound propagation in urban canyons.  In 1973, he began working at BBN in highway noise and regulatory acoustics.  Helping to found HMMH in 1981, he has since worked on most aspects of aviation noise and vibration, from assessing the effects of aircraft noise on building vibration, to environmental studies of new or lengthened runways, to computer model validation and refinement, to quantifying the effects of aircraft overflights on national parks. Mr. Miller designed and developed Virtual Soundscapes™, an HMMH innovation that permits users to hear realistic recordings of existing and future environments. Mr. Miller retired in 2017.

Carl Hanson

Carl Hanson, Ph.D., P.E., Retired

Dr. Carl Hanson was active on rail transportation projects since 1972 until his retirement from HMMH in 2011 - first at BBN from 1972-1981, and then as a founder of HMMH in 1982. Dr. Hanson was active in a wide range of projects including noise control designs of vehicles and facilities, compliance tests, environmental assessment, community measurement programs and expert testimony. He was especially active in the area of high speed rail and maglev systems, having conducted research and consulting projects in the United States and Europe.