Valóban azt jelenti, hogy a hangot bekapcsolják, felkapcsolják, maximális hangerőre állítják:

Audio Commands

Roll silent — don’t turn up the audio on whatever videotape machine is rolling
Audio fade — slowly reduce the volume on the audio source
Cross fade — slowly reduce volume on one audio source, and increase volume on another audio source
Sound up — bring up the sound on the audio source to its full level
Sound under — lower the sound on the audio source to have something else heard over it
Mike and cue talent — open the mike for the talent

http://www.mcom.mcneese.edu/courses/mcom231s/directing.html


Még két előfordulás:

Music up. Opening sequence and title slate appears: Protocol Series: Electrical Conductivity of Water. Effect to a close up shot of a girl drinking water from a water fountain. Music dips as the natural sound of the water fountain gets a little louder.

Cut to a sound-up of a German teacher with students, in their native language, with English subtitles on screen.

TEACHER: "Okay, students. As you know, our school is part of the worldwide GLOBE Program and today we will start a new measurement protocol, electrical conductivity. But, I can imagine that you have some questions."

http://www.globe.gov/hq/videos/scripts/ElecConductWater.htm


Now watch the sequence again with the sound up:

What does the music add to the effect of the scene on you?
Watch the closing sequence of the film with the sound turned down. Discuss:

How are the two different endings contrasted?
What do you think the ending of the film means?

http://www.bfi.org.uk/education/resources/teaching/citizensh...


Magyarul szerintem a "hang be", "hang bekapcsol", "hang maximális értékre fel" használatos. A többi utasítással össze kellene hangolna, ha például "ráközelítés" szerepel, főnévként, akkor ez is lehet "hang bekapcsolása" vagy "hang maximális értékre beállítása".