When [Electron Impressions] used a powerful ultrasonic array to project a narrow beam of sound toward a target, he described ...
Create a focused speaker so your music targets only the listener. That demodulates at 40 kilohertz, with an H-bridge and ...
When [Electron Impressions] used a powerful ultrasonic array to project a narrow beam of sound toward a target, he described it as potentially useful in getting someone’s attention from across a ...
In the medical applications of ultrasonic imaging, sound waves of high frequency are usually employed to produce in-depth cross-sectional images of internal organs. Special multi-element transducers ...
Holodeck, anyone? Researchers at Bristol University are developing a system known as UltraHaptics that uses ultrasonic force fields to project the tactile sensations of objects in midair. Currently ...