Key, Chord, and Rhythm Tracking of Popular Music Recordings
Computer Music Journal
Real-Time Pitch Spelling Using the Spiral Array
Computer Music Journal
A music retrieval system supporting intuitive visualization by the color sense of tonality
DBA'06 Proceedings of the 24th IASTED international conference on Database and applications
Detecting harmonic change in musical audio
Proceedings of the 1st ACM workshop on Audio and music computing multimedia
INFORMS Journal on Computing
MM '08 Proceedings of the 16th ACM international conference on Multimedia
Key Estimation Using Circle of Fifths
MMM '09 Proceedings of the 15th International Multimedia Modeling Conference on Advances in Multimedia Modeling
Exploding the monochord: an intuitive spatial representation of microtonal relational structures
MCM'11 Proceedings of the Third international conference on Mathematics and computation in music
Music thumbnailing incorporating harmony- and rhythm structure
AMR'08 Proceedings of the 6th international conference on Adaptive Multimedia Retrieval: identifying, Summarizing, and Recommending Image and Music
Musical keys and chords recognition using unsupervised learning with infinite Gaussian mixture
Proceedings of the 2nd ACM International Conference on Multimedia Retrieval
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Computer models for determining key boundaries are important tools for computer analysis of music, computational modeling of music cognition, content-based categorization and retrieval of music information and automatic generating of expressive performance. This paper proposes a Boundary Search Algorithm (BSA) for determining points of modulation in a piece of music using a geometric model for tonality called the Spiral Array. For a given number of key changes, the computational complexity of the algorithm is polynomial in the number of pitch events. We present and discuss computational results for two selections from J.S. Bach's "A Little Notebook for Anna Magdalena". Comparisons between the choices of an expert listener and the algorithm indicates that in human cognition, a dynamic interplay exists between memory and present knowledge, thus maximizing the opportunity for the information to coalesce into meaningful patterns.