SETI's 1977 "Wow!" signal from deep space was even stronger than originally thought, but its source remains a complete mystery.

Discover how frequency combs, specialized lasers with evenly spaced frequencies, enable precise light frequency comparison ...

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 ...

You have surely read about signal bandwidth in various technical literature, but exactly what is it and why does it matter in signal processing projects? All circuits and transmission paths limit the ...

Coherent interleaved sampling is a new technique that can acquire data faster with more data points than sequential sampling. Engineers who need to characterize semiconductor devices, high-speed ...

A team led by scientists at the Center for Nanoscale Materials (CNM) located in Argonne National Laboratory have developed a device that could improve a range of electronics. Their micromechanical ...