Audio feedback, often characterized by a loud squealing or howling sound, results from a loop created when the sound from a loudspeaker is picked up by a microphone and re-amplified. This occurs when the amplified sound from the speaker returns to the microphone, initiating a cycle of increasing volume. A common scenario involves a presenter standing too close to a speaker, or when the microphone gain is set too high relative to the speaker volume.
Preventing audio feedback is essential for maintaining clear and professional sound quality in various settings, including presentations, live performances, and video conferencing. Addressing this issue ensures that intended audio is delivered effectively without disruptive noise. Historically, early sound reinforcement systems were particularly susceptible to feedback, leading to the development of various techniques and technologies aimed at mitigation.
