日本音響学会2006年秋季研究発表会発表スライド - 奥乃研究室 - 京都 ...

• • (Content-basedMusic Information Retrieval) • • ••

i. ? F0FluteViolinPianoii. e.g. MFCC?Instrogram

Instrogram (1/2)Flute-Violin-PianoPiano ViolinTime [s]

p(ω i ; t, f) p(ω i ; t, f) =p(X; t, f) p(ω i |X; t, f) ω i ∩ X=ω iX=ω 1 ∪ááá∪ω m p(X; t, f)• (t, f)p(ω i |X; t, f)• (t, f) i

pitchwise processingfor each fHMMfreq.…for each tft…PreFEst…timetimewise processing

Instrogram• DTWDPt p t p t =(p(ω 1 ; t, I 1 ),p(ω 1 ; t, I 2 ), ááá,p(ω m ; t, I N )) 0 2p, qdist(p, q) =1à (p, q)/||p||á||q||(p, q) =p 0 Rqp||p|| = (p, p) DTWR

Instrogram • 14RWC• RWC-MDB-I-2001NTTMSA-P13• Piano, Violin, Clarinet, FluteClassical (i)(ii)(iii)No. 12, 14, 21, 28No. 19, 40No. 43StringsPiano+StringsPiano+FluteJazz (iv) No. 1, 2, 3 Piano solo

(1/2)RM-C No.14 (Str.)RM-C No.19 (Pf.+Str.)PianoViolinClarinetFlute• Violin• Piano

(2/2)RM-C No.40 (Pf.+Str.)RM-J No.1 (Piano)PianoViolinClarinetFlute• PfStr• Piano

Instrogram• 7000• -9000• 3• Instrogram33• MFCC

• • • Instrogram• • • •