Editing Lip sync (section)

{{Short description|Matching a speaking or singing person's lip movements to an audio recording}}
{{About|mimed singing or speaking performance}}

[[File:LipSyncRecording.jpg|thumb|An [[audio engineer]] (foreground) recording a [[Voice acting|voice actor]] (at microphone) for an animated video production. Lip synchronization of this recording with [[animation]] will give the impression that an animated character is speaking.]]

'''Lip sync''' or '''lip synch''' (pronounced {{IPAc-en|s|ɪ|ŋ|k}}, like the word ''sink'', despite the [[Hard and soft C|spelling]] of the participial forms ''synced'' and ''syncing''), short for '''lip synchronization''', is a technical term for matching a [[Speech|speaking]] or [[singing]] person's lip movements with sung or spoken vocals.

Audio for lip syncing is generated through the [[sound reinforcement system]] in a live performance or via television, computer, cinema [[Loudspeaker|speakers]], or other forms of [[Audio signal|audio]] output. The term can refer to any of a number of different techniques and processes, in the context of live performances and [[audiovisual]] recordings.

In [[Filmmaking|film production]], lip syncing is often part of the [[post-production]] phase. [[Dubbing]] foreign-language films and making [[Animation|animated]] characters appear to speak both require elaborate lip syncing. Many video games make extensive use of lip-synced sound files to create an immersive environment in which on-screen characters appear to be speaking. In the [[music industry]], lip syncing is used by singers for [[music video]]s, television and film appearances and some types of live performances. Lip syncing by singers can be controversial to fans attending concert performances who expect to view a live performance.