Hush Acoustic’s founder, Gary Ehrlich, was part of a 56-member ANSI working group that prepared an ANSI standard for classroom noise (ANSI S12.60-2010). Since this standard was released, there has been a growing consensus in the education community that acoustics can and should be better addressed in schools. LEED for Schools has partially incorporated the ANSI criteria, and many states are now enacting laws mandating compliance with the ANSI criteria. The standard provides specific performance criteria and a thorough summary outlining implementation strategies. Key areas of concern are noise from mechanical systems, transportation noise, noise from adjacent classrooms, and noise from learning equipment within the classroom.


Typical Services

  • Review architectural and structural drawings for wall types, floor-ceiling type, finishes, and site layout for potential noise issues.
  • Review mechanical drawings for HVAC noise. 
  • Review and comment on vibration-sensitive areas such as laboratories.
  • Review and comment on special areas such as auditoria and libraries.
  • Develop recommendations for noise control treatment based on established design goals.
  • Construction phase site walkthroughs to ensure proper construction of acoustic items.
  • On site measurements for troubleshooting, post-construction compliance testing, or to benchmark an existing space.

exemplary projects

Powell Elementary School

Studio Architects assisted DCPS with the complete renovation of the existing two wings of the Powell Bilingual Elementary School, building which was originally built in 1929 and 1956. The project also involved the construction of two new wings. Hush Acoustics worked with the design team to control HVAC system noise, provide sufficient acoustical privacy, control reverberation, and achieve LEED for Schools certification.

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Mundo Verde

Mundo Verde Bilingual Public Charter School is Washington’s first “green” public charter school. Joining the project team led by Studio Twenty Seven Architecture, Hush Acoustics aided with the design by evaluating all acoustical issues such as HVAC noise, acoustical privacy between classrooms, reverberation, and LEED for Schools certification.