Noise reduction technology can effectively reduce the interference of environmental noise on audio, allowing users to focus more on music or call content, thereby enhancing the sound quality experience. Using noise cancelling Bluetooth earphones in noisy environments can reduce the need for users to increase the volume of the earphones in order to hear clear audio, which helps protect hearing. The noise reduction function can reduce the interference of external noise, making users more private when making calls or listening to music.

The working principle of wireless earbuds is mainly based on Bluetooth technology. After establishing a Bluetooth connection between the earbuds and the playback device, the playback device will transmit audio signals to the earbuds through Bluetooth. The audio processing chip inside the earbuds decodes and amplifies the received audio signal, and then plays it back through the speaker. At the same time, some wireless earbuds also have microphones and noise reduction technology, which can achieve call and noise reduction functions.