2021 IEEE International Conference on Acoustics, Speech and Signal Processing

6-11 June 2021 • Toronto, Ontario, Canada

Extracting Knowledge from Information

2021 IEEE International Conference on Acoustics, Speech and Signal Processing

6-11 June 2021 • Toronto, Ontario, Canada

Extracting Knowledge from Information
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Paper Detail

Paper IDSAM-5.3
Paper Title (W)EARABLE MICROPHONE ARRAY AND ULTRASONIC ECHO LOCALIZATION FOR COARSE INDOOR ENVIRONMENT MAPPING
Authors Felix Pfreundtner, Jing Yang, Gábor Sörös, ETH Zurich, Switzerland
SessionSAM-5: Microphone Array Signal Processing
LocationGather.Town
Session Time:Thursday, 10 June, 14:00 - 14:45
Presentation Time:Thursday, 10 June, 14:00 - 14:45
Presentation Poster
Topic Sensor Array and Multichannel Signal Processing: [SAM-DOAE] Direction of arrival estimation and source localization
IEEE Xplore Open Preview  Click here to view in IEEE Xplore
Abstract We present a microphone array structure for spherical sound incidence angle tracking that can be attached to headphones or directly integrated into earphones. We show that this microphone array together with an ultrasonic sound source, e.g., a home assistant speaker in the room, allows to estimate the direction and distance of sound reflections on wall surfaces in the room. With our presented method, we achieved sound incidence angle estimation errors of around 14◦ in the horizontal plane and around 5◦ in the vertical plane, and reflection position estimation errors of around 5cm within 2m. Having the reflection points in 3D allows us to sparsely capture the closest room geometry at interactive rate, which is a necessary step towards indoor audio augmented reality applications.