The sight of arrays of ultrasonic speakers causing small objects and beads of liquid to float in mid-air without any suspension is magical, captivating people of all ages. Thus a lecture at ...

The phased array principle was introduced into ultrasonic testing because of its multiple advantages (Krautkramer, 1990; Rose, 1999; Ahmad et al., 2005). Some of the advantages of phased arrays over ...

The whole device is powered through the USB connection, and the ultrasonic speakers output in the 40KHz ... driven by a NE555 to massive phased arrays.

Audfly ultrasonic focus sound speakers in action at a digital gallery, delivering precise audio narration to individual visitors without disturbing others in the space. SUZHOU, JIANGSU ...