Regex Editor & Tester

Matches a newline followed by a parenthetical sound/action description, a space, an uppercase speaker name, and a colon with trailing space (e.g., '\n(door slams) JOHN: '). With global and multiline flags, it's ideal for cleaning SDH (Subtitles for the Deaf and Hard of Hearing) subtitle files by targeting combined speaker labels and audio cues on a line so they can be removed or replaced.