Music refers to the background music in the film, which mainly plays the role of setting off the atmosphere of the scene, describing the character, and promoting the development of the plot. It is generally divided into active music and passive music. Active music is It refers to the music that appears on the screen and can be traced to its source, such as the music emitted by the speakers in the screen, etc., which is mainly to reflect the real situation, while the passive music is equivalent to the off-screen music, which mainly enhances the atmosphere and describes the plot, the inner feelings of the characters, etc.
Sound effects refer to sound effects, which can be roughly divided into two categories: realistic and design. Realistic is mainly composed of Foley, which restores the sound of images that are difficult to record in reality through Foley. There are also some sound effects that are full of design, such as the sounds of monsters in science fiction films, etc., which need to be designed by means of synthetic sounds, and sometimes the lens language of the picture is also accompanied by sound effects, such as the bullets in The Matrix Time slow motion will be paired with low-frequency sound effects to express time prohibitions, etc.
Dialogue refers to the voices of the characters in the screen. Generally speaking, dialogue is divided into simultaneous voice recording and post-recording with ADR based on mouth shape.
International voice refers to the voices in the screen. For the dialogue part, if the film is planned for overseas distribution, multi-language versions of the dialogue must be produced so that local voices can be released during overseas distribution.
Mixing refers to a reasonable matching of music, sound effects, dialogue, international sounds and other sound track materials, including a perfect fusion in terms of loudness, frequency band, etc., in order to achieve these A harmonious blend of elements.