If you purchase an independently reviewed product or service through a link on our website, SPY.com may receive an affiliate commission. Whether you realize it or not, you’re surrounded by an ...

The disc-shaped resonator measures less than 2 centimeters across, yet the innocuous device is eavesdropping on spacetime. It’s a newly built acoustic wave resonator, and in its first 153 days of ...

Denmark's MyDefence is adding its new WideBand Extended Frequency (XF) antenna and detection software to its wearable unmanned aircraft system (UAS) detector Wingman as part of an upgrade based on ...

Sound can be represented with both analog or digital audio signals. Analog audio signals use electrical voltage levels. Different types of transducers convert sound to electrical signals and ...