The recent Design Idea “Getting an audio signal with a THD < 0.0002% made easy,” discloses a low THD sine generator which led me to dust off a design that I had published in AudioXpress magazine [1] ...

If there’s one thing that amateur radio operators are passionate about, it’s the search for the perfect sine wave. Oscillators without any harmonics are an important part of spectrum hygiene, and ...

Tasked with adding harmonic density and weight to an oscillator’s tone, many VAs feature what’s known as a sub oscillator - a simple waveform (usually a sine, triangle or square) that sits one or two ...