Xiaomi Car announces noise reduction patent.

Tianyancha's intellectual property information shows that recently, the patent for "noise reduction method, device, vehicle, and storage medium" applied by Xiaomi Automotive Technology Co., Ltd. was published. The abstract shows that this patent is based on the vehicle's error signal and accelerometer signal to identify the noise scene in which the vehicle is located, decomposing the accelerometer signal into multiple non-overlapping subband signals, and then combining the adaptive filtering parameters corresponding to each subband signal to obtain a full-band noise reduction signal. This solution can efficiently divide and respond to complex, multi-spectral noise, improve noise reduction effects, and consequently enhance the user's driving experience.