Mr. Keefe is a principal of Ostergaard Acoustical Associates. He is a musician and physicist with over fifteen years of acoustical consulting experience, with a passion for performing arts venues. He oversees projects involving room acoustics, sound-isolating constructions, sound system design, HVAC system noise control, and environmental and community noise evaluation and control. Representative projects include:

Monroe Community College Theater, Rochester, NY
Renovation of a multipurpose theater, including shaping and material selection for new wall and ceiling panels, sound system design/specification, and remediation of HVAC sound levels.
34th-Street Hudson Yards Subway Station, New York, NY
Consultation on station acoustics, public address system design, and interior and exterior HVAC system noise control for the No. 7 Subway line expansion to the Hudson Yards development area.
PS-464M, Manhattan, NY
Carried out room acoustics, sound isolation, HVAC noise control analyses for this challenging 9-story school located within a high-rise mixed use building in downtown Manhattan. Concerns included sound isolation from 1st-floor retail spaces into the school envelope, from the school to residential spaces above school, and from inbound environmental noise due to city traffic. The consultation also involved the design/specification of the gymatorium and multi-purpose room sound systems, as well as detailed coordination with the separate design team for the non-school portion of the high-rise building.
NY Jets Training Facility, Hempstead, NY and Florham Park, NJ
Assisted the NY Jets NFL team with ambient noise evaluations at their then-current Hempstead, NY, facility and their new facility in Florham Park, NJ.
Recording Studio, Bloomfield College, Bloomfield, NJ
Provided assistance with room shaping, selection of finishes, HVAC system noise control, and sound isolation for a new recording studio and associated control room. The HVAC system in the recording studio and control room achieves a remarkably-quiet NC-15 background sound level, while special partition, door, and ceiling constructions achieve significant acoustical separation between these two basement spaces as well as to the multipurpose room above.
Metro-North Railroad
Assisted with the development of a horn test protocol and ensuing ANSI Standard S12.69.
Grounds for Sculpture East Gallery, Hamilton, NJ
Consultation regarding conversion of an unoccupied storage warehouse to a multipurpose space to be used as an art gallery, event venue, and music performance space. Assisted the design team with room shaping and finishes, isolation of sound from adjacent spaces, and a new quiet HVAC system.


  • Bachelor of Arts in Physics and Music, Duke University, 2004


  • Acoustical Society of America
  • Institute of Noise Control Engineering
  • ASTM Committee E33 on Building and Environmental Acoustics


  • AutoCAD Authorized Training
  • EASE Modeling Software, Level II Training
  • Listen Level 2 Loop Consultant Partner