Ultrasound-based thermometer
- Duración: 2:6
- Calificación: n/a
- Visto: 114' favoriteCount='1
- Autor: svholm
Tags: INF3460 of Oslo sound speed temperature Ultrasonic Univeristy universitetet
Probably the most expensive method for finding water temperature you can think of. It uses an ultrasound reflection measurement and the dependence of the speed of sound with temperature. The video is based on a project done at the Group for Digital Signal Processing and Image Analysis,...
Theremin controlled by ultrasound rangefinder
- Duración: 1:2
- Calificación: 5.00 de 1 people
- Visto: 282' favoriteCount='1
- Autor: svholm
Tags: 40 amazing grace INF3460 kHz of Oslo ultrasonic universitetet University
Two 40 kHz ultrasound sensors are used as a rangefinder with a soundcard running at 192 kHz, and Matlab. The distance between the transducers controls the pitch of the note. The video is based on a project done at the Group for Digital Signal Processing and Image Analysis,...
Touch sensitive blackboard
- Duración: 2:55
- Calificación: n/a
- Visto: 504' favoriteCount='1
- Autor: svholm
Tags: acoustic INF3460 object of Oslo recognition sensitive universitetet University
Touch sensitive surface using a single sensor only. In general one needs as many sensors as dimensions for positioning, e.g. GPS needs at least 4 satellites to find the 3D position + time. Here 2D positioning is done using only a single sensor - a simple PC microphone. This video is based on a...
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