Abstract: In embedded audio streaming media system, the audio streaming server as a core part plays a crucial role. Taking features that high real-time requirement and limited cache resources in a LAN of audio streaming media system into account, the server presents dynamic transmission rate control algorithm. It firstly ensures the average transmission speed is same as the ideal sending speed in as soon as possible cycle, and then uses negative feedback factor to adjust partial speed in this cycle. Data synchronization is not good enough when using multicast broadcasting the same programs in point-to-multipoint structure. In order to improve the quality of service, the server selects peer workgroup model and unicast polling transmission mode. Experimental results show that the real-time and smoothly broadcasting and synchronization for terminals can been ensured.

Key words: streaming media, server, synchronization, peer workgroup model