Audio noise reduction method and device based on Bluetooth headset, equipment and storage medium

The invention relates to the technical field of audio noise reduction, and discloses an audio noise reduction method and device based on a Bluetooth headset, equipment and a storage medium. The method comprises the following steps: acquiring multi-dimensional sound data through a plurality of microphone arrays in the Bluetooth earphone, and performing preliminary filtering processing through an initial cascade bisecond-order filter to obtain first audio signal data; performing multivariate variational mode decomposition and noise modeling on the first audio signal data to obtain a noise model and sound features; performing adaptive filter parameter optimization analysis on the initial cascaded bisecond-order filter based on the noise model and the sound features to obtain a target cascaded bisecond-order filter; performing dynamic noise elimination through a target cascade double-second-order filter to obtain second audio signal data; and performing dynamic sound enhancement on the second audio signal data, a