There are many factors that go into producing high-quality sound through speakers and headphones. One way to improve that sound is via EQ.
Abstract: A photonic system for simultaneous measurement of angle-of-arrival (AOA) and frequency based on stimulated Brillouin scattering and frequency-to-time mapping is proposed and experimentally ...
Your watch’s VO2 max isn’t perfect, but you can improve its accuracy with better data and heart-rate tracking.