WIRELESS AUDIO TRANSMISSION DEVICE, WIRELESS SOUND OUTPUT DEVICE, AND SYSTEM HAVING SAME

The present disclosure relates to a wireless audio transmission device, a wireless sound output device, and a system including the same. The wireless audio transmission device includes: a transceiver configured to wirelessly transmit an audio signal to at least one wireless sound output device; and a processor configured to control the transceiver, wherein, after power on, the transceiver transmits a beacon frame including available multiple network address information, and after pairing, receives selected network address information from a paired wireless sound output device and transmits wireless audio data based on the selected network address information. Accordingly, it is possible to reduce the period of wireless network configuration after power on in the wireless sound output system.