Based on the problems of traditional broadcast system such as complexity wiring and low efficiency, this paper presents a design scheme of intelligent addressable broadcast system which takes the advantages of Zigbee and frequency modulation (FM) technologies. This system adopts a cluster topology structure with a master and numerous of broadcast nodes. The network management and system control is realized by Zigbee. The audio signal is transmitted via FM broadcast. Besides, we realized the upper computer software design based on Visual C. The practical test shows that audio quality and system efficiency are both greatly enhanced, and the broadcast system is low-cost, low-power and low-complexity.

This paper presents a design scheme of 5.1-channel wireless audio system which takes the advantages of Zigbee and PurePath Wireless technologies. It overcomes several disadvantages of traditional wired audio system such as inconvenience of speaker placement, complexity of wiring, low efficiency, etc. This system adopts a star topology structure with a host and six slave machines. System management is based on Zigbee network, and digital audio is transmitted via PurePath Wireless audio link. The CC8530 audio transceiver chips and IEEE 802.15.4 RF chips were adopted as the hardware platform and the Zigbee protocol stack was adopted as the core software. The results show that this method makes the wireless audio system low-cost, low-power and low-complexity. In addition, audio quality and system efficiency are both greatly enhanced.