Why doesn't adaptive noise cancellation sometimes enter deep noise reduction at subway or bus stations when using the Xiaomi Buds 5?

Question

Accepted Answer

Adaptive noise cancellation works by collecting data over time from the environment and using complex algorithms to determine the noise cancellation mode. Since noise includes ultra-low, low, and mid frequencies, some environments do not meet the threshold to activate deep noise reduction. This also helps prevent frequent switching, which could lead to a poor experience. We will also pay attention to feedback in this area and continue to upgrade the algorithm. To maintain a specific noise cancellation mode, please open the Xiaomi Earbuds APP and manually set the noise cancellation mode to deep noise cancellation.