Semantic HiFi Consortium February, 2006

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Semantic Hi-Fi Consortium February, 2006
b.s.d
b.s.d
Multi-Track Recording Separation Using Harmonic
Decomposition and Harmonic Sharing
BEN-GURION UNIVERSITY Dr. Ofer Hadar Etan Fisher,
M.Sc. Dima Bykhovsky, M.Sc.
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Example Stan Getz Round Midnight.

• Featuring
• Saxophone
• String section
• Horn section
• Bass
• Drums

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Example first quarter note
Original excerpt
Bass
Cymbal (residual)
String pizzicato (A)
Strings
String pizzicato (B)
All separated sounds were normalized for clear
listening.
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Example First bar
Analysis overlap 1/2 frame.
Original excerpt
Bass (with horns)
Saxophone (harmonic dec.)
Saxophone Residual
Residual
All separated sounds were normalized for clear
listening.
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Likelihood Function (V1)
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Likelihood Function (V2)advanced version
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Flow Chart
Music
Preprocessing
Harmonic Decomposition
Harmonic Un-Sharing
Signal Separation
Instruments Classification
Post-processing
Decomposed Music
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Further Goals

• Measure for quality of decomposition.
• More examples orchestral, vocal.
• Finer examples of harmonic sharing.
• Combining modules into a workable tool or audio
  effect.