The definition of non-diegetic sound.
Sometimes called commentary or non-literal sound, non-diegetic sound is any type of sound that does not specifically exist within the world of the film itself. In other words, it’s the type of sound that characters in a film are not able to hear, but that we can.
Star Wars (1977)
The opening crawl for Star Wars films are great examples of non-diegetic music and text. The John Williams score is an accompaniment, something exclusively for the audience to hear, not the characters.
Diegetic sound is sound that comes from the setting of the film. Non-diegetic sound is sound that comes from our world, such as the soundtrack or scoring. Diegetic sound could include the voices of characters, utensils clattering in the background, or music coming from a piano being played on-screen.
Common examples of diegetic music include music playing on the radio, overhead music playing in a cafe, as well as any music played by musicians that are performing in a scene. Often, a music editor will add filters to diegetic music to give the effect of how a character would be hearing the music in their environment.
This includes music, off-screen sounds coming from an unseen source, and any other noise that doesn’t come from one of the characters. Non-Diegetic sound can be used as a way to help set time and place in the movie or it can serve as commentary on what’s happening on screen.
The music exists solely for the audience and is typically used to influence their emotional reaction to a scene.
Diegetic sound originates from a source within a film’s world; nondiegetic sound comes from outside that world.
Non-diagetic or extradiegetic devices exist outside the world of the story. The audience is aware of these elements, but the characters are not. Examples of non-diagetic sounds: Theme songs, voice overs/narration, background music, credits, text on the screen (i.e. title cards) etc.
Yes, music can be both diegetic and non-diegetic. If the scene has a band in it or a CD player or something like that, the music is heard by both the people in the audience and the actors in the film. Non-diegetic is a soundtrack over top of the scene that the people in the film can’t hear.
The voice-over is not specifically non-diegetic. Because the voice-over is a language-event, it represents as diegetic; because it is associated with the image-event, it is part of the mimesis of the filmic text.
Diegetic music is what the characters can hear, which means any sort of musical score doesn’t count. Music on a record player or being performed by musicians on-screen fall into this category.
These kinds of sounds help create an epic atmosphere and mood for the viewers to watch. Diegetic sounds allow characters as well as viewers to hear what is happening around them, whereas non-diegetic sounds is promoted by a narrator to help explain the storyline.
This type of sound effect is used to heighten suspense or drama by drawing attention to what may be behind the door. Another use for sound effects is non-diegetic, which refers to any sound that does not originate from onscreen events but instead provides background noise.
nondiegetic sound Sound coming from the space outside the narrative— whose source is neither visible on the screen nor implied by the present action. Nondiegetic sound is added by the director for dramatic effect. Examples would be mood music or an omniscient narrator’s voice. Silence can also be nondiegetic.
Establishing a mood, feeling, emotion. Non-diegetic music can also convey a sense or time and place, often y the use of stock musical depictions of cultural settings taht are deeply imbedded in our culture. Musical themes associated with people, places, situations, events, objects, emotions, etc.
Most film music is non-diegetic music, one of the most familiar instances being the music for the shower scene in Psycho.
Two common examples of non-diegetic sound are voice over narration and mood music. Sound that is heard off-screen.
What are the four phases of sound production? Design, recording, editing, mixing.
What Is Non-Diegetic Sound? Non-diegetic sound, also called commentary or nonliteral sound, is any sound that does not originate from within the film’s world.