Ear Cushions

Ear cushions are critical components in portable Bluetooth noise-cancelling headphones, designed to create an acoustic seal around the ear to enhance passive noise isolation and improve active noise cancellation effectiveness. They consist of a foam core (often memory foam or polyurethane) covered with synthetic leather, protein leather, or fabric, encased in a plastic or metal frame that attaches to the headphone ear cups. Their primary functions include distributing pressure evenly for comfort during extended wear, preventing sound leakage, and housing internal microphones for active noise cancellation feedback systems.

Ear cushions work by creating a physical barrier and acoustic seal between the ear and the external environment. The foam core absorbs external noise through damping, while the airtight seal prevents sound waves from entering or escaping, enhancing bass response and noise isolation. In active noise-cancelling models, the cushion material and design allow internal microphones to accurately capture ambient noise for electronic cancellation, with the seal ensuring minimal interference from external air movement.