Wireless bluetooth noise-canceling headphones exploring the design principles and different categories of products

Bluetooth headphones have almost overtaken the wired headphone in the past five to ten years. This is due to the improved stability and sound quality of the Bluetooth transmission technology and the decrease in delay during the transmission. The portability of Bluetooth headphones makes them popular with people who spend time away from home and desks. This paper aims to observe and compare the noise-cancellation technology in the commonly-seen Bluetooth headphones in the market. The paper illustrates the common noise cancellation methods in section 2. Section 3 describes four common noise-canceling headphones and their noise-cancelling mechanism. The future outlook is provided in section 4 to display the current limitation of Bluetooth headphones, which mainly demonstrates the active noise-cancellation technology.