zajcsökkítés

Zajcsökkítés, often translated as noise reduction or noise cancellation, refers to the process of removing or decreasing unwanted sound. This can be achieved through various methods, broadly categorized into passive and active techniques.

Passive zajcsökkítés involves physically blocking or absorbing sound waves. Examples include using soundproofing materials like foam or fiberglass in walls, wearing earplugs, or designing quieter machinery. The effectiveness of passive methods depends on the material's properties and the frequency of the sound.

Active zajcsökkítés, also known as active noise cancellation (ANC), uses electronics to counteract unwanted noise. This is typically done by generating an "anti-noise" sound wave that is 180 degrees out of phase with the original noise. When the original noise and the anti-noise waves combine, they cancel each other out, resulting in a quieter environment. ANC systems are commonly found in headphones and are increasingly integrated into vehicles and other appliances. The success of active noise cancellation is dependent on the accuracy of the anti-noise signal and the ability of the system to adapt to changing sound conditions.