The Shepherd Tone:  It’s an auditory illusion where two sine waves with different frequencies are played in the same ear simultaneously and creates a pulsing or beating sensation as if they’re coming from within your head.

Diegetic: Sound that the characters can hear eg. Dialogue

Non-diegetic: Sound that the characters can not hear but the audience can eg. Narration and Music Soundtrack

Synchronous: Sound that is matched by action eg. Playing a piano

Asynchronous: Hearing something we cannot see on screen

Needle Drop:  A “needle drop” is slang used in the film industry to describe when a pre-existing song is used in a movie.

Leitmotif: A recurring musical theme that is associated with a character, location or situation.

Score: A film score is original music written specifically to accompany a film

Underscore: An underscore is a soft soundtrack theme that accompanies the action in a performance. It is usually designed so that spectators are only indirectly aware of its presence. It may help to set or indicate the mood of a scene.

Sound Perspective: Sound perspective refers to the apparent distance of a sound source, evidenced by its volume, timbre, and pitch. This type of editing is most common in how the audience hears film characters’ speech.

Ambient Sound: Is background sound eg. Crickets at nigh