The video and audio signals in our television system are being subjected to more and more steps of digital processing. Each step has the potential to add a different amount of delay to the video and audio, thereby introducing a lip sync error. Incorrect lip sync is a major concern to newscasters, advertisers, politicians, and others who are trying to convey a sense of trust, accuracy, and sincerity to their audience. Studies have demonstrated that when lip sync errors are present, viewers perceive a message as less interesting, more unpleasant, less influential, and less successful than the same message with proper lip sync.
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