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Sakamoto Lab
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The lab explores better sound environments for cities and architecture by predicting, measuring, and reproducing sound.
AboutAbout the lab
Exploring better sound environments in architecture and cities
Sakamoto Lab studies the sound environments of cities and architecture.
Research proceeds in stages: predicting and measuring how sound propagates, reproducing sound in the laboratory, and evaluating how people perceive it.
Activities center on experiments in acoustic laboratories such as anechoic chambers, and on measurements at real sites such as concert halls, railway stations, and roads.
The sounds studied range from the reverberation of concert halls to everyday noise.
Key terms
- Anechoic chamber
- A laboratory whose walls, floor, and ceiling are covered with sound-absorbing material, so that almost no sound is reflected.
- Sound field
- A space in which sound propagates and resonates. How it sounds changes with the shape of the room and the finishing materials.
- FDTD method
- A simulation method that divides space and time into small steps and calculates, bit by bit, how sound waves propagate.
NewsLab news
A master's student received the Student Excellent Presentation Award from the Acoustical Society of Japan
A paper evaluating the health effects of road traffic noise was published in an acoustics journal
The lab presented its research, with sound demonstrations, at the UTokyo Komaba Research Campus Open House
ResearchResearch themes
The lab studies the sound environments of architecture and cities through a series of stages: sound field prediction, acoustic measurement, sound field reproduction, and perceptual evaluation. It places importance on both experiments in acoustic laboratories equipped with anechoic chambers and other facilities, and on measurements at real sites.
*Illustrative imageReproducing Real-World Sound in the Laboratory
The lab builds a system that plays back sound recorded from front-back, left-right, and up-down directions in three dimensions through loudspeakers in an anechoic chamber. It uses the system to evaluate the sound environments of railway stations and public spaces, as well as speech leakage in pharmacies and offices.
*Illustrative imageAnalyzing How Sound Propagates by Computer
The lab develops methods for accurately simulating the wave properties of sound. It focuses in particular on using the FDTD method to analyze how sound propagates moment by moment.
*Illustrative imageDesigning the Acoustics of Halls and Classrooms
Using acoustic experiments with scale models and numerical simulation, the lab predicts the acoustics of concert halls. It also examines classrooms in open-plan elementary schools and the sound environments of railway stations.
*Illustrative imagePredicting Urban Noise
Focusing on road traffic noise, the lab studies methods for predicting how noise propagates in dense urban areas with closely packed buildings. It has also investigated through experiments how to block sound entering through gaps around windows and ventilation openings.
MembersFaculty
The members of Sakamoto Lab consist of a professor emeritus and faculty members, doctoral and master's students, research trainees from other universities, senior collaborators, secretaries, research fellows, and collaborative researchers.As of 2026
- ProfessorShinichi SakamotoPublications ↗
- Assistant Professor原田 和典
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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: “Chambre anéchoïque du Laboratoire national de métrologie et d'essais” JPRoche / CC BY-SA 3.0 (cropped)
- Reproducing Real-World Sound in the Laboratory: “L'Espace de projection avec le système WFS” Delamary / CC BY-SA 4.0 (cropped)
- Analyzing How Sound Propagates by Computer: “Diffraction-half-plane-no-rays” MikeRun / CC BY-SA 4.0 (cropped)
- Designing the Acoustics of Halls and Classrooms: “Yokohama Minatomirai Hall, Main Hall” KAMEDA, Akihiro / CC BY-SA 3.0 (cropped)
- Predicting Urban Noise: “Nagoya Expwy. No.3 Odaka Route 20160107A” Oka21000 / CC BY-SA 4.0 (cropped)
- Related lab (Sakuma Lab (Environmental Acoustics Lab)): “Anechoic chamber DTU” Arnaud Dessein / CC BY-SA 3.0 (cropped)
- Related lab (Mae Lab): “Private House with Solar Roof panels. - geograph.org.uk - 627270” Colm O hAonghusa / CC BY-SA 2.0 (cropped)
- Related lab (Kozaki Lab): “Interior view of the Wangz hotel lounge with shining parquet curved ceiling and round table Singapore” Basile Morin / CC BY-SA 4.0 (cropped)
- Related lab (Ooka-Kikumoto Lab): “Komaba Research Campus (Evening) color” Guwashi / CC BY 2.0 (cropped)
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