@ARTICLE{Kania_Paulina_A_Online, author={Kania, Paulina and Kania, Dariusz and Łukaszewicz, Tomasz}, journal={Archives of Acoustics}, howpublished={online}, year={Online first}, publisher={Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics}, abstract={The signature of fifths is a special kind of music representation technique enabling acquisition of musical knowledge. The technique is based on geometrical relationships existing between twelve polar vectors inscribed in the circle of fifths, which represent individual pitch-classes detected in a given composition. In this paper we introduce a real-time key-detection algorithm which utilizes the concept of the signature of fifths. We explain how to create the signature of fifths and how to derive its descriptors required by the algorithm, i.e., the main directed axis of the signature of fifths, the major/minor mode axis, the characteristic vector of the signature of fifths, the characteristic angle of the signature of fifths, and the angle of the major/minor mode. We performed a series of experiments to test the algorithm’s effectiveness. The results were compared with those obtained using key-detection approaches based on key-profiles. All experiments were conducted using works composed by J.S. Bach, F. Chopin, and D. Shostakovich. The distinctive features of the presented algorithm, with respect to the considered key-detection approaches, are computational simplicity and stability of the decision-making process.}, type={Article}, title={A Real-Time Key-Finding Algorithm Based on the Signature of Fifths}, URL={http://czasopisma.pan.pl/Content/132999/PDF/aoa.2024.148817.pdf}, doi={10.24425/aoa.2024.148817}, keywords={music key-detection, tonality, music information retrieval, music classification}, }