Deep comparison of noise reduction technology for high-end Bluetooth earphones

Active noise cancellation (ANC) has become a standard feature of high-end headphones, but the noise reduction effect varies significantly among different solutions.

Hybrid ANC vs Feedforward ANC:

Feedforward type: The microphone is located on the outside of the headphones and generates reverse sound waves after detecting environmental noise. It has low cost but weak low-frequency noise reduction;

Hybrid: Combined with feedforward and feedback microphones (such as Bose QuietComfort Ultra), it can accurately cancel out residual noise in the ear canal.

Adaptive noise reduction:

The Apple AirPods Pro 2 uses the H2 chip to analyze the shape of the ear canal in real-time and dynamically adjust the noise reduction curve;

The Sony WH-1000XM5 is equipped with a V2 processor and supports 'personalized noise reduction' settings.

Transparent mode optimization:

Adaptive transparency mode (such as Galaxy Buds2 Pro) can recognize voice frequencies and automatically enhance vocals;

The bone conduction transparency mode (such as AfterShokz Aeropex) separates environmental sounds and music through algorithms.