A Low-Latency Full-Duplex Audio over IP Streamer
Asbjørn Sæbø, U. Peter Svensson · 2006
LDAS (Low Delay Audio Streamer) is software for transmitting full duplex high-quality multi-channel audio with low end-to-end latency over IP networks. It has been designed and implemented as a tool for research into distributed multimedia interaction and quality of service in telecommunications. LDAS runs on Linux, using the ALSA sound drivers and li-braries. It uses UDP as its transport protocol. A flow control scheme is used to keep the sender and receiver synchronised and to deal with transmission errors. Tests have shown end-to-end latencies (from analog input to analog output) down to around five milliseconds over a minimal network.