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%0 Conference Proceedings
%A Vincent, Emmanuel
%A Rodet, Xavier
%T Music transcription with ISA and HMM
%D 2004
%B 5th Int. Symp. on ICA and BSS (ICA'04)
%C Granada
%F Vincent04b
%K polyphonic
%K transcription
%K instrument
%K identification
%K ISA
%K HMM
%X We propose a new generative model for polyphonic music based on nonlinear Independent Subspace Analysis (ISA) and factorial Hidden Markov Models (HMM). ISA represents chord spectra as sums of note power spectra and note spectra as sums of instrument-dependent log-power spectra. HMM models note duration. Instrument-depen\-dent parameters are learnt on solo excerpts and used to transcribe musical recordings as collections of notes with time-varying power and other descriptive parameters such as {\it vibrato}. We prove the relevance of our modeling assumptions by comparing them with true data distributions and by giving satisfying transcriptions of two duo recordings.
%1 6
%2 3
%U http://articles.ircam.fr/textes/Vincent04b
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