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 ...

These are the type of flow meters that measure the velocity of liquid or gas by using the principle of ultrasound or sounds waves. Fast digital signal processors and sophisticated signal analysis ...

On Friday evening in Merritt Island’s Sykes Creek, dolphins and storks could be as the sun set. Residents in the area said the algae levels have not only changed the color of the water, but also ...