Design of an Indoor Full Digital Wireless Audio Broadcast System
XIA Shufeng;CHAO Ming;WANG Kaiyu;College of Electronic Science and Technology,Dalian University of Technology;
A high fidelity full digital wireless audio broadcast system is introduced. It's made up of all digital audio sources,wireless transceivers and audio amplifiers,and can be used as an indoor background music system. The master is controlled through a touch screen. Audio sourceis can come from audio file,FM radio,analog stereo line input,S / PDIF plastic optical fiber,or digital coaxial cable. The master can also act as an USB sound card and connect to PC. High efficiency class-D audio amplifiers with digital audio input are used in the slaves. CC8520 s are used to transmit lossless digital audio signal from master to the slaves. The system is stable,easy to install and costeffective.