Audio ANC refers to the active noise control technology used in noise-canceling headphones or speakers, which recognizes and cancels out the noises in the surrounding environment, thus providing clearer and cleaner sound and enabling users to enjoy a better music, movie or call experience. Currently, the mainstream audio ANC technology is mainly categorized into two types: anti-phase interference and feedback.
Inverted-phase interference audio ANC is a technology that utilizes a microphone to capture the sound of outside noises and generates a reverse sound wave through a built-in chip to bring down the volume. Feedback audio ANC, on the other hand, is a technology that reduces noise by feeding external sounds back to the speakers. Both technologies require the use of a digital signal processor (DSP) to process the audio for noise cancellation.
Audio ANC technology is now widely used in consumer electronics, such as noise-canceling headphones, speakers, smartphones and tablets. In addition, Audio ANC is used in medical devices, military communications, and industrial applications, all of which require high levels of noise control. As technology continues to improve, audio ANC will become more and more common in all areas, bringing users a clearer and more comfortable sound experience.