Is it a horror film or a rom-com? AI can predict based solely on music



Fig 1. The Rating Stamper pipeline. A movie is partitioned into non-overlapping five-second segments. For each section, Dejavu will predict if a observe within the movie’s soundtrack is taking part in. Cues, or situations of a track’s use in a movie, are constructed by combining window predictions. On this instance, the “Cantina Band” cue lasts for 15 seconds as a result of it was predicted by Dejavu in two close by home windows. Credit score: DOI: 10.1371/journal.pone.0249957

Music is an indispensable aspect in movie: it establishes environment and temper, drives the viewer’s emotional reactions, and considerably influences the viewers’s interpretation of the story.

In a current paper printed in PLOS ONE, a analysis workforce on the USC Viterbi College of Engineering, led by Professor Shrikanth Narayanan, sought to objectively look at the impact of on cinematic genres. Their research aimed to find out if AI-based expertise may predict the of a movie primarily based on the soundtrack alone.

“By higher understanding how music impacts the viewer’s notion of a movie, we achieve insights into how movie creators can attain their viewers in a extra compelling means,” stated Narayanan, College Professor and Niki and Max Nikias Chair in Engineering, professor {of electrical} and and and the director of USC Viterbi’s Sign Evaluation and Interpretation Laboratory (SAIL).

The notion that completely different movie genres are extra probably to make use of sure musical parts of their soundtrack is slightly intuitive: a lighthearted romance may embrace wealthy string passages and plush, lyrical melodies, whereas a may as an alternative characteristic unsettling, piercing frequencies and eerily discordant notes.

However whereas previous work qualitatively signifies that completely different movie genres have their very own units of musical conventions—conventions that make that romance movie sound completely different from that horror film—Narayanan and workforce got down to discover quantitative proof that parts of a movie’s soundtrack may very well be used to characterize the movie’s style.

Narayanan and workforce’s research was the primary to use to the music utilized in a movie to see if a pc may predict the style of a movie primarily based on the soundtrack alone. They discovered that these fashions had been capable of precisely classify a movie’s style utilizing machine studying, supporting the notion that musical options may be highly effective indicators in how we understand completely different movies.

In keeping with Timothy Greer, Ph.D. pupil at USC Viterbi within the division of laptop science who labored with Narayanan on the research, their work may have useful purposes for and creators in understanding how music can improve different types of media. It may give manufacturing firms and music supervisors a greater understanding of the right way to create and place music in tv, films, commercials, and documentaries with the intention to elicit sure feelings in viewers.

Along with Narayanan and Greer, the analysis workforce for the research included Dillon Knox, a Ph.D. pupil within the division {of electrical} and laptop engineering, and Benjamin Ma, who graduated from USC in 2021 with a B.S. in laptop science, a grasp’s in laptop science, and a minor in music manufacturing. (Ma was additionally named one of many two 2021 USC Schwarzman Students.) The workforce labored inside the Heart for Computational Media Intelligence, a analysis group in SAIL.

Predicting style from soundtrack

Of their research, the group examined a dataset of 110 well-liked movies launched between 2014 and 2019. They used style classification listed on the Web Film Database (IMDb), to label every movie as motion, comedy, drama, horror, romance, or science-fiction, with lots of the spanning multiple of those genres.

Subsequent, they utilized a deep studying community that extracted the auditory data, like timbre, concord, melody, rhythm, and tone from the music and rating of every movie. This community used machine studying to research these musical options and proved able to precisely classifying the style of every movie primarily based on these options alone.

The group additionally interpreted these fashions to find out which musical options had been most indicative of variations between genres. The fashions did not give specifics as to which sorts of notes or devices had been related to every style, however they had been capable of set up that tonal and timbral options had been most essential in predicting the movie’s style.

“Laying this groundwork is basically thrilling as a result of we are able to now be extra exact within the sorts of questions that we wish to ask about how music is utilized in movie,” stated Knox. “The general movie expertise may be very sophisticated and having the ability to computationally analyze its affect and the alternatives and traits that go into its building may be very thrilling.”

Future instructions

Narayanan and his workforce examined the auditory data from every movie utilizing a expertise referred to as audio fingerprinting, the identical expertise that permits companies like Shazam to establish songs from a database by listening to recordings, even when there are sound results or different background noise current. This expertise allowed them to have a look at the place the musical cues occur in a movie and for the way lengthy.

“Utilizing audio fingerprinting to take heed to all the audio from the movie allowed us to beat a limitation of earlier movie music research, which often simply regarded on the movie’s whole soundtrack album with out understanding if or when songs from the album seem within the movie,” stated Ma. Sooner or later, the group is excited by making the most of this functionality to review how music is utilized in particular moments in a movie and the way musical cues dictate how the narrative of the movie evolves over its course.

“With the ever-increasing entry to each movie and music, it has by no means been extra essential to quantitatively research how this media impacts us,” Greer stated. “Understanding how music works at the side of different types of media may also help us devise higher viewing experiences and make artwork that is shifting and impactful.”


AI tool characterizes a song’s genre and provides insights regarding perception music


Extra data:
Benjamin Ma et al, A computational lens into how music characterizes style in movie, PLOS ONE (2021). DOI: 10.1371/journal.pone.0249957

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Is it a horror movie or a rom-com? AI can predict primarily based solely on music (2021, September 15)
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