What is the phenomenon called when sound repeats due to feedback in audio production?

The phenomenon when sound repeats due to feedback in audio production is referred to as feedback. Feedback occurs when the output of an audio system is fed back into the input, creating a loop that can cause the sound to amplify and produce a distinct repeating sound. This effect commonly happens when a microphone picks up the sound from speakers directly, leading to a loud and sometimes undesirable audio feedback loop.

Other terms like echoing, humming, and resonance, while related to sound, describe different experiences. Echoing refers to the reflection of sound off surfaces, creating a delayed repetition of the original sound, but it’s not due to feedback. Humming is typically a steady noise generated by electrical equipment or mechanical sources, rather than an effect created by audio feedback. Resonance involves the amplification of sound at certain frequencies within a space or material, but it does not directly relate to the audio feedback loop where sounds repeat due to interconnection between input and output devices. This makes feedback distinctly focused on the audio production context of sound repetition.