Method and system for synchronizing audio transmission in a single frequency network

A method for synchronizing audio transmission in a single frequency network, the method comprising:

• preparing in a first exporter a first digital audio signal for transmission to a first exciter engine of the single frequency network;
• buffering the first digital audio signal in a first control unit associated with the first exporter to produce a buffered first digital audio signal and transmitting the buffered first digital audio signal to the first exciter engine for broadcast by the first exciter engine;
• preparing in a second exporter a second digital audio signal for transmission to a second exciter engine of the single frequency network;
• buffering the second digital audio signal in a second control unit associated with the second exporter to produce a buffered second digital audio signal;
• transmitting the first digital audio signal from the first control unit to the second control unit;
• buffering in addition to the second digital audio signal also the first digital audio signal at the second control unit;
• receiving control commands as received control commands at the second control unit regarding the second control unit transmitting the buffered first digital audio signal or the buffered second digital audio signal to the second exciter engine, wherein the second control unit transmits the buffered second digital audio signal to the second exciter engine for broadcast by the second exciter engine dependent on the received control commands;
• and
• synchronizing transmission of the buffered first digital audio signal by the first control unit to the first exciter engine and of the buffered second digital audio signal by the second control unit to the second exciter engine based on a trigger signal received by the first and second control units.