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{{More citations needed|date=February 2009}}
'''Audio connectors''' and '''video connectors are a''' are [[electrical connector|electrical]] or [[optical fiber connector|optical connectors]] for carrying [[audio signal|audio]] or [[video signal]]s. '''Audio interfaces''' or '''video interfaces''' define physical parameters and interpretation of signals. Some connectors and interfaces carry either audio only or video only, whereas others carry both, [[Audiovisual|audio and video]].
For [[digital audio]] and [[digital video]], this can be thought of as defining the [[physical layer]], [[data link layer]], and most or all of the [[application layer]]. For [[analog audio]] and [[analog video]] these functions are all represented in a single signal specification like [[NTSC]] or the direct [[Loudspeaker|speaker]]-driving signal of analog audio.
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