“Dialogue Boost lets you increase the volume of dialogue relative to background music and effects, creating a more comfortable and accessible viewing experience that cannot be found on any other global streaming service,” Amazon wrote in a blog post detailing the new feature.
Rather of applying voice upgrades to a complete movie or TV program, Dialogue Boost use artificial intelligence to detect key points in material when it may be difficult to understand what is being said. The blog post further reads, “This AI-based approach delivers a targeted enhancement to portions of spoken dialogue, instead of a general amplification at the center channel in a home theater system.”
The degree of Dialogue Boost may be set to one of two levels (medium or high). When watching material, these options will appear in the audio/subtitles drop-down menu, and information pages for movies and TV series will be updated to indicate whether they support Dialogue Boost.
Dialogue Boost is available internationally for certain English language including the series The Marvelous Mrs. Maisel, Tom Clancy’s Jack Ryan, and Harlem, as well as the films The Big Sick, Being the Ricardos, and Beautiful Boy. Amazon has stated that it would add Dialogue Boost support for more movies this year.
Prime Video boasts to be the first worldwide streaming service to provide this functionality.