Then, we discussed and tried out various contemporary music information retrieval methods with a special focus on accompanying #harmonies (aka #chords).
The first method to come up was “Automatic chord recognition” ( #ACR), a method that scientists have worked on for over 25 years.
A nice summary of this ongoing research (with the most significant challenges identified) can be found in this 5-year-old article => https://archives.ismir.net/ismir2019/paper/000004.pdf
🧵4/20
Nevertheless, we found the use of ACR for the #RomChords project to be limited.
ACR is a classification task that analyses audio signals to compare and categorise harmonic content into *predefined* chord labels.
While this method estimates very well the common progressions in functional harmony, it doesn’t quite know how to handle less common chords and voicings (such as the “dimenzovaný” chord” mentioned above) as they are not usually found in the *predefined* labels.
🧵5/20
