Speechreading is the use of information apparent on the speaker’s face, including the lips, cheeks, jaw, tongue, as well as other available visual information, to attempt to visually perceive spoken language. This process is often referred to as lipreading; however, relatively little information is available on the lips. While these terms are often used interchangeably, some in the field suggest that lipreading should be restricted to the extraction of meaning from the information available on and around the mouth, while speechreading should be used to reflect the analysis of a broader range of information, such as facial expressions, body language, and contextual cues from the language and situation that can inform the decision about what word the speaker intended.

Speechreading depends on the ability to use ...

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