Bluetooth earphone noise reduction is a function that reduces noise interference, making the sound heard by users clearer and more comfortable. Here are several methods for reducing noise in Bluetooth earphones:
1. Adopt Active noise control technology. Active noise control is to reduce the noise by recording the frequency and amplitude of the external noise in advance, and then calculating the stereo signal and sending the reverse audio signal. For small devices such as Bluetooth headsets, small microphones and built-in circuits are usually used to achieve Active noise control.
2. Adopting passive noise reduction technology. Passive noise reduction is achieved by using physical isolation to reduce noise, such as a physical barrier isolated by external sound to prevent noise propagation.
3. Adopting dual noise reduction technology. Dual noise reduction combines active and passive noise reduction to minimize the interference of environmental noise. For example, a Bluetooth headset can use both Active noise control and sound insulation materials to eliminate noise.
4. Adjust the audio settings through EQ to reduce the interference of environmental noise on sound. This method can offset external interference by adjusting the frequency and amplitude of the audio signal.
Overall, the noise reduction of Bluetooth earphones is mainly achieved through a combination of active and passive technologies. These technologies can be achieved through built-in circuits, miniature microphones, and soundproofing materials. The use of Bluetooth earphones for noise reduction allows users to better enjoy the clarity and comfort of music, calls, and other sounds.
