EXPERIENCE

Dave Parzych is the principal and founder of Power Acoustics, Inc.  Dave provides a full range of acoustical consulting services including sound measurements, analytical modeling studies and working as an expert witness  in industrial, commercial, transportation and residential applications.  Mr. Parzych has also developed a commercial software package, SPM9613, used worldwide in community noise modeling out of his Orlando, Florida office.

He is known as an expert in outdoor sound propagation modeling, power plant noise and gas turbine silencing.  Dave has been an invited speaker and author in conference sessions sponsored by the Acoustical Society of America and the Institute of Noise Control Engineering on noise modeling of power plants, industrial facilities and sound barrier design and prediction. 

October 1992 to February 1998

Mr. Parzych was a Senior Noise Control Engineer and Technical Group Leader of Acoustics in the Environmental Engineering group at Westinghouse Power Generation. From 1992 through February of 1998 he led the development of noise control and state-of-the-art research in modeling and diagnostics techniques. Mr. Parzych was responsible for the acoustical silencing and design of combustion turbines, aerodynamic source modeling of turbo machinery noise, overall acoustical design of combustion turbine, steam turbine and cogeneration projects and environmental modeling to determine community impacts and worker noise exposure.

October 1983 to October 1992

From 1983 to 1992, Mr. Parzych gained experience in aircraft noise through an intensive effort to develop a quiet counter-rotating Prop-Fan aircraft engine as an Analytical Acoustical Engineer at United Technologies Corp., Hamilton Standard Division. Mr. Parzych has been an investigator on several NASA funded research projects involving acoustics and unsteady aerodynamics of propellers, Prop-Fans and wind turbines.

May 1982 to October 1983

Dave began his professional career as an acoustical engineer in 1982 with General Dynamics, Electric Boat Division in Groton, Connecticut working in airborne and structureborne silencing for the on-board nuclear power plants used in the US NAVY submarine fleet.

Continuing education in acoustics and noise control including aero-acoustics offered at the Catholic University in Washington D.C. and many seminars and conferences on acoustics and noise control.  

• Licensed Professional Engineer, State of Oregon, with specialty in Acoustical Engineering (PE18940)
• Board Certified member of the Institute of Noise Control Engineering
• Chairman of ANSI B133.8, subcommittee 7, Gas Turbine Installation Sound Emissions (1997-2000)
• Member of ANSI B133.8, subcommittee 7, Gas Turbine Installation Sound Emissions (2000-present)
• Member of ASTM E33.08, In-duct sound power level task group  (2002-2006)
• Member Main Committee, ANSI B133, Gas Turbine Procurement (1997-2000)
• Member ISO/TC 192 Committee, Gas Turbines (1997-2000)
• Member ATSM E33 Committee on Environmental Noise
  
• Full Member ASME
• Full Member Acoustical Society of America

Patents

Patent Number 5,709,529, January 20, 1998, “Optimization of Turbomachinery Harmonics”

Dave has written dozens of technical papers for various organizations on noise prediction, modeling and measurements.  A listing of his papers, as well as PDF copies of some of the them, can be found on our "Publications" web page.