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Psychoacoustics Lab (Katsuya Yamauchi)
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A lab that studies car noise and signal sounds based on how sounds are perceived.
AboutAbout the lab
Exploring noise and sound design through how sounds are perceived
The psychoacoustics lab of Associate Professor Katsuya Yamauchi studies environmental noise and sound design, approaching them through people's psychological responses to sounds they hear and their perceptual evaluation of those sounds.
Recently, the lab has been especially interested in how future cars should sound, and focuses on research into the sounds of next-generation vehicles such as electric and hybrid vehicles.
Prediction of road traffic noise and the design of signal sounds are also research subjects.
Key terms
- Subjective evaluation
- A method in which people who hear a sound report how it felt, and their responses are used to examine the sound's impression and quality
- Sound power level
- An index of how much sound a source (here, a car) emits into its surroundings. Its relationship to driving speed has been studied
- Signal sound
- A sound played to convey information or warnings. In a car, it is used to notify the driver
ResearchResearch themes
Approaching the topic through people's psychological responses to sounds they hear and their perceptual evaluation of those sounds, the lab studies environmental noise and sound design. Recently it has focused on the sounds of next-generation vehicles such as electric and hybrid vehicles.
*Illustrative imageAccuracy of Road Traffic Noise Prediction
The lab studies the accuracy of calculation-based prediction of road traffic noise, and the uncertainty contained in those predictions.
*Illustrative imageSound Design for Next-Generation Vehicles
The lab studies sound design for electric and hybrid vehicles using subjective evaluation, in which people listen to sounds and rate them.
*Illustrative imageImpact of Next-Generation Vehicles on Noise
The lab investigates how road traffic noise will change as electric and hybrid vehicles become widespread. It evaluates this using prediction formulas and sound power levels.
*Illustrative imageDesign of Vehicle Approach Warning Sounds
The lab studies the design of vehicle approach warning sounds for hybrid vehicles and others, using subjective evaluation in which people listen to the sounds. Electric vehicles and automobile traffic noise are also subjects of this work.
MembersFaculty
- Associate ProfessorKatsuya Yamauchi
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: “Faiz Abdulali recording noise from Traffic in Mumbai” Sumaira Abdulali / CC BY-SA 3.0 (cropped)
- Accuracy of Road Traffic Noise Prediction: “Making a noise measurement using the NIOSH SLM app” Bryan Beamer / Public domain (cropped)
- Sound Design for Next-Generation Vehicles: “Detroit Electric Car Mt. Rainier” Cress-Dale Photo Co. / Public domain (cropped)
- Impact of Next-Generation Vehicles on Noise: “Cars at a charging station in Lysekil 3” W.carter / CC BY-SA 4.0 (cropped)
- Design of Vehicle Approach Warning Sounds: “Pedestrian crossing on Marsh Way - geograph.org.uk - 5626247” Christine Johnstone / CC BY-SA 2.0 (cropped)
- Related lab (Psychoacoustics Lab): “Electric charging of Tokyo Gas car 2” Syced / CC0 (cropped)
- Related lab (Psychoacoustics Lab (Masayuki Takada)): “Leslie S3L Train horn” 作者不詳 / Public domain (cropped)
- Related lab (Psychoacoustics Lab (Masayuki Takada)): “French horn front” BenP / CC BY 2.5 (cropped)
- Related lab (Psychology Lab): “Motion illusion in star arrangement” Fiestoforo / CC BY 3.0 (cropped)
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