Passive noise-canceling refers to the ability of certain materials or designs to block out unwanted sounds without using any electronic components. This is often achieved through the use of thick padding or sound-absorbing materials in products like headphones or earplugs. By creating a physical barrier, these items help reduce the amount of noise that reaches your ears, making it easier to focus or enjoy music. Unlike active noise-canceling technology, which uses microphones and speakers to counteract sound waves, passive noise-canceling relies solely on the design and materials. This makes it a simpler and often more affordable option for those looking to minimize background noise in their environment.