The text of a video or film's audio part is displayed directly on the video or film through captioning. This may include not only the words but also the sounds that are vital to comprehend as well as the sound's source. Access to Communication For live events, real-time translation is the verbatim text of oral presentations. CART could be used in the classroom, at meetings, workshops, and other events, such as live theater—anywhere where a person with a hearing loss needs to hear in a group environment. Understanding speech may necessitate the use of multiple technologies; for example, those with hearing loss may require CART in addition to an assistive listening system. The text can be projected onto a screen, shown on a computer monitor or laptop, or sent over the internet.