Digital technologies are a pacemaker for innovations in industry as well as in healthcare. Sensors and micro-electro-mechanical systems (MEMS) play a special role as sensory organs of technology. Acoustic sensors, microphones and ultrasonic systems are widely used to provide condition information and investigations in technology, industry and medicine. However, the devices for this have so far been large, cost-intensive and predominantly stationary in use. The research team of "Listen2Future" wants to change this through new technological systems in different applications.