Laboratory and Field Acoustical Testing

Pabco Gypsum


Daikin Applied

Trane Heating and Cooling


USG Corporation

Gypsum Association

CertainTeed Gypsum

McCain Walls



Signal Safeguard

Soelberg Industries

Nigro Construction (Marriott/Fairfield Inn)

Building Specialties Inc (US ARMY)




American Gypsum

Laboratory Design Services

Daikin Applied

Architectural Acoustics and Audio

Town Lake Property Management

Acme Tools

Elmwood Properties

Pleasant Valley Church

Word of Life Church

St. Paul Public Schools

Studio Design and Tuning

Hermes Sound

Grey Ghost Music

Egg Music


"David has been an excellent laboratory director to work with, as I have strived to make advances in the field of acoustics. His personality makes it easy to discuss openly the measurement data acquired. He is always willing to discuss the data with me and then troubleshoot and try new things. He runs an effective laboratory that can output quite a bit of measurements/data in relatively little time. He is always honest about his laboratory's capabilities and his analysis of the data. His laboratory has been one my greatest assets in furthering research and development in acoustics."

Benjamin Shafer

Technical Services Manager - Acoustic Systems, 

PABCO Building Products, LLC

"We recently contracted with North Orbit Acoustic Laboratories for an evaluation of our worship space. We had many questions about improving our room acoustics. NOAL was the solution to our questions. They arrived at our site and measured reverberation time, frequency response, and speech intelligibility. Their report was complete and thorough. We are more than pleased. Their work was professional and easy to understand. I highly recommend them for acoustic needs." 

Paul Quist

Word of Life Church, LeSueur MN

"Getting the sound right in my studio was my highest priority. NOAL came in, gave me a proposal, worked with me on my design choices then guided me through to completion. They are informative, knowledgeable, efficient, flexible and creative." 

Troy Hermes

Audio editor/mixer/sound designer


"The team at NOAL goes well beyond providing accurate data taken in accordance with technical standards. They interpret, problem solve, trouble shoot and come up with actionable ideas that we can put to use in the development of our products."

Derrick Knight, INCE

Acoustic Engineer


Acoustical testing, acoustical field testing, acoustical laboratory testing, sound testing, design, research, consulting