Plug-In Characterizes Music's Emotional Content

US Eventide releases a free trial version of Mood      19/12/13

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Eventide has announced the release of a trial version of Mood, a plug-in that they say characterizes the emotional content of music. Here's the full details in Eventide's own words...

Mood analyzes music including key, spectral content, tempo, dynamics and additional aspects to create a set of 'descriptors' which are then compared to a data base. The data base has been populated by people listening to and rating pop songs.

Mood displays, in real time, the relative intensity of four emotions - angry, calm, happy and sad. The intensity of these emotions are output as MIDI and OSC values which could be used, for example, to control the brightness and color of lights on stage or in a dance club.

While a computer algorithm can analyze audio six ways to Sunday, it cannot, on its own, map the results of the analysis to how the audio will make someone 'feel'.' The computer must be trained by humans. Training is done by asking people to listen to examples of songs that make them "feel" a certain way and having them judge the degree of each emotion. The algorithm then analyzes these rated songs to determine those characteristics involved in eliciting specific emotions. This process creates the 'descriptors' that can then be used to analyze a new submission/song.

After months of training, we believe that Mood is ready to be introduced to, and trained by, a wider audience. And so we're asking for help. The plug-in includes a link that makes it easy for users to give us feedback and to let us know which songs 'fool' Mood.

"Mood is a bit whimsical and no doubt some will question why we bothered to create the plug-in. The fact is that audio analysis is at the heart of what we do and we were curious to explore the possibility of using signal analysis to map musical content to emotion," said Eventide's Tony Agnello. "We were also inspired by a well-known producer who, upon learning of the idea, said we were 'nuts'.  Fair enough."

To date, Mood has only been trained on 'pop' songs. Solo voice, solo instruments, jazz and classical music will not yield meaningful results. Training is ongoing, however and we're hoping that people will download the plug-in and help us improve it.


Pricing and Availability:
Mood is available for immediate download at no cost for a 90 day trial period.

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