เปรียบเทียบวิธี

	การรู้จำคอร์ด	อัลกอริทึมตรวจจับระดับเสียง
สาขาวิชา	การสืบค้นสารสนเทศดนตรี	การสืบค้นสารสนเทศดนตรี
ตระกูล	Machine learning	Machine learning
ปีกำเนิด	2005	2002
ผู้ริเริ่ม	Christopher Harte	Alain de Cheveigné
ประเภท	Harmonic audio analysis	Fundamental frequency estimation
แหล่งต้นตำรับ	Harte, C., Sandler, M. B., Abdallah, S. A., & Gómez, E. (2005). Symbolic representation of musical chords: Proposed extensions to the HarmO ontology. In Proceedings of the International Society for Music Information Retrieval Conference.	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.
ชื่อเรียกอื่น	chord estimation, harmonic analysis, chord detection	f0 detection, fundamental frequency tracking, monophonic pitch extraction
ที่เกี่ยวข้อง	5	5
สรุป	Chord recognition is the task of automatically identifying the harmonic chords present in a musical recording and estimating when chord changes occur. Introduced formally by Harte et al. (2005), it is a cornerstone of music analysis and widely used in music education, cover song analysis, and musical structure understanding. Modern systems use deep learning to classify and sequence chords in real time.	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.