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