[FromConceptToCircuit] shares code to turn one of these radios into a spectrum analyzer that sweeps up to 6 GHz and down to 100 MHz. You can see a video of how it works below. While it may seem ...

Abstract: This paper presents the investigation of the phase noise of a parity-time (PT) symmetric optoelectronic oscillator (OEO). The finding leads to the development of a low phase noise and high ...

“Noise colors” are terms used in audio engineering to describe different kinds of noise. The “colors” are differentiated by the amplitude of various frequencies across the audible spectrum. Typically, ...

Abstract: We propose and demonstrate a novel method for precisely quantifying the repetition-rate phase noise of mode-locked lasers (MLLs) based on a dual-wavelength delayed self-heterodyne ...

The complexity and dynamics of how signals are organised within the radio spectrum, dictates the receiver technology needed to recover them. A contemporary digital radio receiver must channelise the ...

The din of the world persists, and that's where noise-canceling earbuds come in. I've tested the best noise-canceling earbuds on the market in multiple scenarios -- when the office gets too loud ...

See what moon phase it is tonight and find out when you can see the rest of the moon phases for 2025. Today, April 14, 2025, the moon is 16 days old and is in the Full Moon phase of its lunar cycle.