Crédits: H
Supplemental Material for:
Jascha Sohl-Dickstein, Santani Teng, Benjamin M. Gaub, Chris C. Rodgers, Crystal Li, Michael R. DeWeese, Nicol S. Harper
A device for human ultrasonic echolocation
IEEE Transactions on Biomedical Engineering, 2014
An ultrasonic chirp is emitted, and a recording is made of the initial chirp followed by any echoes as it reflects off of objects in the environment. The recording is then played back to the wearer, slowed down by a factor of 25 so that the chirp is in the human audible frequency range, and so that fine temporal features in the echoes are expanded and can be more readily detected.