Wireless multi-channel audio transmission method and device

A wireless multi-channel audio transmission device for transmitting N channels of audio data to M subset channel audio receiving devices, comprising:

• an audio processing and storage unit configured for dividing the N channels of audio data into M groups of subset channel audio data, wherein each group of subset channel audio data comprises at least one channel of audio data;
• and
• a baseband and protocol processing unit configured for transmitting the M groups of subset channel audio data to the M subset channel audio receiving devices through M transmission modules in parallel, wherein each of the transmission modules adopts a different transmitting frequency at the same time, and the transmission modules used for transmitting each group of subset channel audio data are changed according to a preset changing rule, wherein M and N are positive integers, and M≥2, N≥2,
• wherein the baseband and protocol processing unit is further configured to establish a group of connected isochronous stream CIS links with each subset channel audio receiving device respectively to transmit a group of subset channel audio data, wherein the group of CIS links comprises at least one CIS link and one CIS link is configured to transmit one channel of audio data;
• or the baseband and protocol processing unit is further configured to establish a group of broadcast isochronous stream BIS links with each subset channel audio receiving device respectively to transmit a group of subset channel audio data, wherein the group of BIS links comprises at least one BIS link and each one BIS link is configured to transmit one channel of audio data.