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Acoustic Environment Lab
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The lab predicts the sound inside buildings and even designs how that sound is heard.
AboutAbout the lab
Toward a better acoustic environment.
The Acoustic Environment Lab studies how the acoustic environments of buildings and cities should be, and how to control them to achieve the best possible state.
The acoustic environment is a major factor in the quality of a space, and controlling it is essential to creating low-stress environments.
Considering both the physical properties of sound and the responses of the human body and mind, the lab develops new acoustic materials and technologies for measuring, predicting, controlling, and presenting sound fields.
The lab aims for acoustic environments with fewer unpleasant sounds, more comfortable music, and clearer conversation.
Key terms
- Sound field
- The space through which sound travels, and how sound spreads and how strong it is within that space
- Auralization
- Recreating by calculation how sound would be heard inside a building that is not yet built, so that it can actually be listened to
- Acoustic metamaterial
- An artificial material whose small structures are engineered to transmit or absorb sound in ways ordinary materials cannot
ResearchResearch themes
The lab takes a comprehensive view of the acoustic environment as a physical quantity together with human physiological and psychological responses. It studies what the acoustic environment of homes should be like, how to control it to the best possible state, new acoustic materials, technologies for measuring, predicting, controlling, and presenting sound fields, and acoustic environment design that applies them.
*Illustrative imageNumerical analysis for predicting acoustic spaces
To create a space with good acoustics, the sound after completion must be predicted accurately at the design stage. The lab develops simulation techniques that can also handle the movement and orientation of sound sources, and visualizes the results to help improve room acoustics and reduce noise.
*Illustrative imageLetting people hear a building's sound during design
This is research on auralization, which lets people experience at the design stage how a completed building will sound. The lab develops techniques to calculate sound accurately inside rooms and around the human body, as well as auditory displays that present sound while preserving spatial information.
*Illustrative imageDeveloping new acoustic materials
The acoustic properties of materials such as walls and ceilings are described in terms of sound insulation, absorption, reflection, and scattering. Through theoretical analysis and experiments, the lab aims to develop new acoustic materials such as acoustic metamaterials, along with ways of using them to meet acoustic requirements.
*Illustrative imageProperties of sound and how people hear it
Even when physical acoustic indicators improve after changes to structures or materials, people's ears may not perceive an improvement. Centered on psychoacoustic experiments, the lab aims to clarify how changes in sound affect people and to create good sound fields.
MembersFaculty
- ProfessorMakoto Otani
- Assistant ProfessorTatsuhiro Tanaka
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Esplanade Concert Hall Theater at Esplanade in Singapore - Ypphotography” Phuan Yan Penh / CC BY-SA 4.0 (cropped)
- Numerical analysis for predicting acoustic spaces: “Acoustic Simulation of a Muffler” SimScale GmbH / CC BY-SA 4.0 (cropped)
- Letting people hear a building's sound during design: “Anechoic engine test stand” Martinhelfer at German Wikipedia / Public domain (cropped)
- Developing new acoustic materials: “Acoustic foam closeup” Chlod Alejandro / CC BY-SA 4.0 (cropped)
- Properties of sound and how people hear it: “RF Fully Anechoic Room 2” Mihaelawojcik / CC BY 4.0 (cropped)
- Related lab (Human Settlement Studies Lab): “Village house in Laos” Basile Morin / CC BY-SA 4.0 (cropped)
- Related lab (Architectural Structures Lab): “NR Dresden Seilnetzkonstruktion einer Sporthalle” Jörg Blobelt / CC BY-SA 4.0 (cropped)
- Related lab (Architectural History Lab): “Exterior facade of Kannon Hall Buddhist temple with Goshikimaku Buddhist flags Ninna-ji Kyoto Japan” Basile Morin / CC BY-SA 4.0 (cropped)
- Related lab (Building Safety Control Lab): “Earthquake damage in San Francisco's Marina District on the north side of the city from the Loma Prieta Earthquake” Nancy Wong / CC BY-SA 3.0 (cropped)
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