Because it is difficult to run HDMI wires long distances, an increasing number of facilities are using digital or RF modulators to send the videos from a central cabinet to TVs around the establishment. Some of these devices use advanced compression techniques and others transmit the full uncompressed video. In either case, the modulator adds some amount of delay, some as low as 20 ms and others as high as 1.5 seconds. When this is done, there is a risk that the Audio Everywhere audio path will actually be faster than the video path. In this case, the solution is to delay the audio by a fixed amount.
Release 2.42 of the Audio Everywhere ExXtractor software allows for this delay adjustment. We can adjust from 0 to 3 seconds of delay in 10 ms increments. We can also do this on a TV by TV basis so that if modulators are purchased from different vendors, we can match each one.
Like our gain adjustments, the audio delay adjustment is easily controlled though our Cloud Server interface, which has been enhanced to show the delay field, in milliseconds.