Blog Categories

Category Archives: Hum and Buzz

Hum and buzz in audio systems and home theaters

What effect does ‘hum’ and ‘buzz’ have? ‘Hum’ and ‘buzz’ can cause major noise issues with our high performance audiovisual systems. Hum is a superposition of the 60Hz mains AC frequency on the audio or video signal. Buzz  is a superposition of the harmonics of the 60Hz (120Hz, 180Hz, etc) mains AC frequency on the […]