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	Algoritm för tonhöjdsdetektering	Melodieextraktion
Ämnesområde	Music information retrieval	Music information retrieval
Familj	Machine learning	Machine learning
Ursprungsår	2002	2008
Upphovsperson	Alain de Cheveigné	Anssi Klapuri
Typ	Fundamental frequency estimation	Polyphonic audio analysis
Ursprungskälla	de Cheveigné, A., & Kawahara, H. (2002). YIN, a fundamental frequency estimator for speech and music. The Journal of the Acoustical Society of America, 111(4), 1917-1930.	Salamon, J., & Gómez, E. (2014). Melody extraction from polyphonic music signals using pitch contour characteristics. IEEE Transactions on Audio, Speech, and Language Processing, 20(6), 1759-1770.
Alias	f0 detection, fundamental frequency tracking, monophonic pitch extraction	pitch contour extraction, melodic line extraction, f0 tracking
Närliggande	5	5
Sammanfattning	Pitch detection (or fundamental frequency estimation) is the task of automatically determining the perceived pitch of a monophonic (single-source) audio signal at each moment in time. Formalized by de Cheveigné and Kawahara (2002) through the YIN algorithm, it is foundational to music and speech processing. Pitch detection enables vocal analysis, music transcription, instrument tuning, and speech analysis. Monophonic pitch is unambiguous; polyphonic pitch detection is fundamentally harder and a distinct problem.	Melody extraction is the task of automatically isolating the main melodic contour from polyphonic music recordings. It originated from music transcription research in the 2000s and addresses the core challenge of human pitch perception: identifying the perceptually dominant pitch when many instruments play simultaneously. Modern approaches use deep learning and are essential for music analysis, cover song detection, and music-to-lyrics alignment.