Minnesota State Capitol

Minnesota State Capitol - Saint Paul, Minnesota

Noise Control & Measurement

Location: Saint Paul, Minnesota Client: HGA Architects General Contractor: JE Dunn

Built in 1905, the historic Minnesota State Capitol received a $272 million restoration that was completed in 2017. ESI worked with HGA Architects and Engineers to evaluate room, acoustics, reduce HVAC noise and vibration, design interior wall assemblies for improved speech privacy, and perform room acoustic and sound transmission testing services.  One of the biggest challenges was to evaluate the existing acoustics in the House of Representatives, Senate and Supreme Court chambers, and develop recommendations for enhanced acoustics and speech intelligibility.

Read more about this project at the links below:


Minnesota State Capitol Restoration Project

Star Tribune Article

Twin Cities Pioneer Press Article

HGA Architects and Engineers Project Profile

An important part of the acoustic ambiance in government buildings is a reverberant sound that conveys life, energy, and grandeur. The challenge is to balance this ambiance with speech intelligibility and sound isolation.

The team’s goal was to provide acoustical solutions that were sensitive
to the historical environment while providing exceptional results.

Browse the project photo gallery below!

Some of our past noise control & measurement projects include:

InterContinental Minneapolis Airport

Minneapolis, Minnesota

Sidra Medical & Research Center

Doha, Qatar

University of Iowa Children's Hospital

Iowa City, Iowa

The Nic on Fifth

Minneapolis, Minnesota

Environmental Noise Control

Various U.S. Locations

Minnesota State Capitol

Saint Paul, Minnesota

4Marq Apartments

Minneapolis, Minnesota

Downtown East Towers

Minneapolis, Minnesota

Holland Energy Facility Noise Survey

Shelby County, Illinois

Bridgewater Condominium Chillers

Minneapolis, Minnesota

Minnesota Public Radio LRT

Saint Paul, Minnesota

St. Louis County Courtroom

Duluth, Minnesota

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