Lock-in amplifiers were invented in the 1930s [1, 2, 3] and commercialized [4] in the mid 20 th century as electrical instruments that are capable of extracting signal amplitudes and phases in ...

Editor’s note: I came across this excellent tutorial article on Digital Filter Design and I thought it would be an excellent guide for novices as well as seasoned veterans. I want to thank William H.

Digital signal processors (DSPs) continue to receive a great deal of attention in new product design. For example, digital filter design reflects the importance of understanding and using this ...

The story so far… in When off-the-shelf won’t do: the step-by-step birth of a custom digital filter, Part 1 I created a continuous-time filter transfer function for my special-purpose 10 th order ...

The term 'phase' denotes the angle corresponding to the momentary deflection of an oscillation. Phase synchronization of neural oscillations refers to the correlation of phase values between two brain ...