Editing Online and offline (section)

===Offline media playing===
Another example of the use of these concepts is [[digital audio]] technology. A [[tape recorder]], [[digital audio editor]], or other device that is online is one whose clock is under the control of the clock of a synchronization master device. When the sync master commences playback, the online device automatically synchronizes itself to the master and commences playing from the same point in the recording. A device that is offline uses no external clock reference and relies upon its own internal clock. When many devices are connected to a sync master it is often convenient, if one wants to hear just the output of one single device, to take it offline because, if the device is played back online, all synchronized devices have to locate the playback point and wait for each other device to be in synchronization.<ref>{{cite book|title=Audiopro Home Recording Course: A Comprehensive Multimedia Audio Recording Text|author=Bill Gibson|pages=155|year=1998|publisher=Hal Leonard|isbn=0-87288-715-4}}</ref> (For related discussion, see [[MIDI timecode]], [[Word clock]], and recording system synchronization.)