0: The SDK reports this reason when the audio state changes.
3: The local user stops receiving the remote audio stream or disables the audio module.
4: The local user resumes receiving the remote audio stream or enables the audio module.
1: Network congestion.
2: Network recovery.
5: The remote user stops sending the audio stream or disables the audio module.
7: The remote user leaves the channel.
6: The remote user resumes sending the audio stream or enables the audio module.
The reason of the remote audio state change.