| 摘要 |
PROBLEM TO BE SOLVED: To provide a delay correction technology for outputting acoustic signals from all nodes without any phase difference by considering a delicate delay such as a delay in a transmission line, also when transmitting audio sample data while circulating a packet in an annular audio network system. SOLUTION: In the annular audio network system, frame data are transmitted by one packet from a master at each sampling period regularly with one of a plurality of nodes and other nodes as a master and slaves, respectively, and there is a region in which the sample data of a plurality of channels for the transmission between the nodes enter the packet. A time from a point in time when the packet is received to a point in time when a master node receives the packet is calculated as a correction time. When the sample data are outputted from each node to external equipment, an output time is delayed only by the correction time. COPYRIGHT: (C)2008,JPO&INPIT |
