Realization of an Ethernet-based synchronous audio playback system

A Dante network card and development template developed by Audinate were used as a platform for realizing an Ethernet synchronous audio playback system. A personal computer (PC) was connected to each Dante device through a switch hub and Ethernet cable PC to transmit sound before TAS3204EVM was applied in digital signal processing and EQ adjustment for application in a live music concert. The expensive wire and cable currently used in live music concerts can be replaced with an Ethernet cable, substantially reducing costs. To ensure that the Dante devices deliver sound simultaneously, an artificial delay was introduced to enable devices closer to the sound source to delay the playback time while devices farther from the sound source play back sound with the other devices. This study examined how the IEEE 1588 Precision Time Protocol can be used for clock correction to synchronize the sound of all devices. Zero Configuration Networking (ZCN) was used to enable the devices to obtain an Internet Protocol address, and the Multicast Domain Name System was employed to obtain the device names, thus ensuring that User Datagram Protocol control instructions can be correctly delivered to control interdevice channel connections.