Live Demonstration: Mixed Reality 3D In-Air Ultrasound Applications

In-air ultrasound has become a common sensing modality for several convenient applications in our daily life found in consumer, industrial or automotive electronics. Using transducer arrays and beamforming algorithms, 3D information of reflectors in an environment can also established and visualized. Due to the physical limitations of ultrasound this representation is much sparser than we are used to when compared to visual sensors. By combining a virtual reality headset with a small ultrasound sensor that features a microphone array and a broadband ultrasound emitter, we can create a mixed reality representation of the world wherein we visualize ultrasonic reflections as an overlay onto the optical images captured by the cameras of the VR headset.