TY - GEN
T1 - Key estimation using circle of fifths
AU - Inoshita, Takahito
AU - Katto, Jiro
PY - 2009/2/4
Y1 - 2009/2/4
N2 - This paper presents a novel key estimation method of sound sources based on the music theory known as "circle of fifths". We firstly overview music theory and formulate the musical key analysis by vector operations. In detail, we separate music sources into small pieces and calculate FFT-based chroma vectors. They are converted to tonality vectors and COF (circle-of-fifth) vectors are calculated from the tonality vectors, which are mapped onto the circle of fifths coordinate. As a result, each music source can be represented by traces of COF vectors, which usually stay inside a single key region on the circle of fifths. Finally, HMM is applied to the traces of COF vectors in order to detect keys and their boundaries. Experiments using music databases are also carried out.
AB - This paper presents a novel key estimation method of sound sources based on the music theory known as "circle of fifths". We firstly overview music theory and formulate the musical key analysis by vector operations. In detail, we separate music sources into small pieces and calculate FFT-based chroma vectors. They are converted to tonality vectors and COF (circle-of-fifth) vectors are calculated from the tonality vectors, which are mapped onto the circle of fifths coordinate. As a result, each music source can be represented by traces of COF vectors, which usually stay inside a single key region on the circle of fifths. Finally, HMM is applied to the traces of COF vectors in order to detect keys and their boundaries. Experiments using music databases are also carried out.
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U2 - 10.1007/978-3-540-92892-8_31
DO - 10.1007/978-3-540-92892-8_31
M3 - Conference contribution
AN - SCOPUS:59049105960
SN - 354092891X
SN - 9783540928911
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 287
EP - 297
BT - Advances in Multimedia Modeling - 15th International Multimedia Modeling Conference, MMM 2009, Proceedings
T2 - 15th International Multimedia Modeling Conference, MMM 2009
Y2 - 7 January 2009 through 9 January 2009
ER -