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Concept
Lip sync
Summary
Lip sync or lip synch (pronounced sɪŋk, the same as the word sink, short for lip synchronization) is a technical term for matching a 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 speakers, or other forms of 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 film production, lip syncing is often part of the post-production phase. Dubbing foreign-language films and making 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 videos, 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.
Lip sync is considered a form of miming. It can be used to make it appear as though actors have substantial singing ability (e.g., The Partridge Family television show), to simulate a vocal effect that can be achieved only in the recording studio (e.g., Cher's Believe, which used an Auto-Tune effects processing on her voice); to improve performance during choreographed live dance numbers that incorporate vocals; to misattribute vocals entirely (e.g., Milli Vanilli, a band which lip synced to recordings made by other singers), or to cover deficiencies in live performance. It is also commonly used in drag shows. Sometimes lip sync performances are forced on performers by television producers to shorten the guest appearances of celebrities, as it requires less time for rehearsals and hugely simplifies the process of sound mixing, or to eliminate the risk of vocal errors.
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