Method for synchronously playing multi-room audio groups in wireless local area network

The invention discloses a method for synchronously playing multi-room audio groups in a wireless local area network. The method comprises the steps that: (1) a WIFI module decodes a Beacon frame, extracts timing information of an AP from the Beacon frame, and updates a clock counter of the WIFI module such that the clock counter of the WIFI module is consistent with an AP clock counter, (2) audiomaster and slave devices access the WIFI module clock counter, a same clock reference is obtained, and the same clock reference between the audio master and slave devices is achieved, (3) the audio master device obtains audio data, encodes the audio data and sends the audio data to the audio slave device in the form of a data frame, and (4) the audio slave device receives the data frame, extractstime information in the data frame and determines whether to the play the audio data. According to the method, the clock synchronization is performed inside the WIFI module, the influences brought bya WIFI driver, a protocol s