Real-Time Audio Distribution over Proximity Connections Using Smart Phones

A powerful use case for voice recording is the case of meetings and other social events. A single recorder is a point device which has a local perspective of the event, meaning that it can record the voice of people nearby but cannot accurately record audio events that happen further away. By letting smart phones record audio content point-wise and exchange the locally recorded content to other smart phones over ad-hoc proximity connections, each smart phone will gain a broader perspective and a consistent audio representation of the entire event. In this paper we analyze such a scenario in which Symbian S60 platforms with Bluetooth version 1.2 stack were used. A distributed recording and content delivery framework is proposed and its performance analyzed by means of simulation and measurements. The validation of our algorithm has been performed using a prototype implementation over these platforms.