These Bricks Can Absorb Traffic Noise - Thesis Presentation on Helmholtz Resonators

Joe Makes

Joe Makes

34 min, 5 sec

A detailed presentation of a master's thesis on using Hemholtz resonators in architecture to alter soundscapes in exterior environments.

Summary

  • Joe Kirma, a Portland native, completed his master's in architecture focusing on resonating soundscapes and altering exterior environments with ceramic Hemholtz resonators.
  • His research investigated the use of fired clay Hemholtz resonators to improve the quality of exterior environment soundscapes, particularly in reducing low-frequency traffic noise.
  • Kirma developed a unique brick design that incorporated three Hemholtz resonators, successfully absorbing specific sound frequencies in tests.
  • Potential applications include using the resonating bricks in construction to improve urban soundscapes and serve as visual and environmental reminders of the impact of noise.

Chapter 1

Introduction and Background

0:00 - 1 min, 34 sec

Joe Kirma introduces himself and his educational background, leading to his thesis in architecture.

Joe Kirma introduces himself and his educational background, leading to his thesis in architecture.

  • Joe Kirma, after completing his business degree in 2008, lived in London for eight years working in a startup selling 3D printers and later at a larger corporation.
  • While in London, he was intrigued by the soundscapes, which led him to pursue a master's in architecture focusing on resonating soundscapes using Hemholtz resonators.
  • He discusses his work experience in London, including converting the Olympic Village media center into a co-working space.

Chapter 2

Soundscapes and Exterior Sound Barriers

1:34 - 3 min, 46 sec

Exploration of soundscapes in London and the impact of noise on health.

Exploration of soundscapes in London and the impact of noise on health.

  • Kirma explains how ironic it is that people seek nature in parks to escape urban noise, yet are bombarded with it.
  • The research delved into the lack of solutions for exterior sound barriers and the effects of low-frequency noise from traffic.
  • A World Health Organization study found that noise exposure increases the risk of cardiovascular diseases, highlighting the need for exterior solutions.

Chapter 3

Sound Manipulation and Acoustic Services

5:20 - 4 min, 29 sec

Review of sound manipulation methods and the historical context of architectural acoustics.

Review of sound manipulation methods and the historical context of architectural acoustics.

  • Kirma discusses the three types of sound manipulation: reflective, absorbed, and diffused.
  • He provides a historical context for sound in architecture, citing Marcus Vitruvius and Leonardo Da Vinci's contributions.
  • The concept of Hemholtz resonators is introduced, and their application in modern architecture and public transportation is highlighted.

Chapter 4

Development of Hemholtz Resonator Bricks

9:49 - 10 min, 13 sec

The process of designing and testing Hemholtz resonator bricks for sound absorption.

The process of designing and testing Hemholtz resonator bricks for sound absorption.

  • Kirma explores different fabrication techniques for creating Hemholtz resonator bricks, including 3D printing and slip casting.
  • Initial prototypes faced issues such as warping and uneven drying, leading to design revisions.
  • Kirma's breakthrough came with a brick that incorporated multiple Hemholtz resonators, which successfully absorbed sound frequencies.

Chapter 5

Final Design and Testing of Resonator Bricks

20:02 - 12 min, 4 sec

The final design of the bricks is tested for sound absorption and real-world application potential.

The final design of the bricks is tested for sound absorption and real-world application potential.

  • The final brick design proved successful in tests, absorbing sound frequencies as effectively as traditional materials like wood and foam.
  • Kirma manufactured a series of these bricks, which demonstrated that ceramics could be effective in sound absorption.
  • The bricks' glazing process not only added to their aesthetic appeal but also provided weatherproofing for exterior use.

Chapter 6

Conclusion and Future Implications

32:06 - 1 min, 57 sec

Kirma concludes the presentation with potential implications for urban planning and architecture.

Kirma concludes the presentation with potential implications for urban planning and architecture.

  • The successful creation of the bricks serves as a proof of concept for the integration of acoustic considerations into architecture from the outset.
  • Kirma suggests that such innovations could influence city planning and the design of future buildings.
  • The potential for these resonating bricks to serve multiple purposes, including environmental integration and health improvement, is highlighted.