Hacker News with Generative AI: Signal Processing

Phased Array (wikipedia.org)
In antenna theory, a phased array usually means an electronically scanned array, a computer-controlled array of antennas which creates a beam of radio waves that can be electronically steered to point in different directions without moving the antennas.
New textbook teaches students about matrix methods and their real world apps (engin.umich.edu)
A new textbook, Linear Algebra for Data Science, Machine Learning, and Signal Processing, is being unveiled for use in classes that explore the many applications of matrix methods to real world data.
'Alien' Signal Decoded (esa.int)
White dots arranged in five clusters against a black background. This is the simulated extraterrestrial signal transmitted from Mars and deciphered by a father and a daughter on Earth after a year-long decoding effort.
Deep dive: the instability of op-amps (lcamtuf.substack.com)
This article assumes some familiarity with signal amplification and the knowledge of basic op-amp circuits. If you need a refresher, start here.
The history of orthogonal frequency-division multiplexing (2009) (ieee.org)
Median filtering (2022) (crisluengo.net)
Of Analog Signal Filtering (lcamtuf.substack.com)
The Fourier Transform: What's Wrong with It? (endaq.com)
Quaternions in Signal and Image Processing (ieee.org)
How the Fourier Transform Works: Abstract Concepts Made Simple (howthefouriertransformworks.com)