comparison draft.tex @ 63:2994e5e485e7

audio Tidy #1
author peterf
date Sat, 17 Mar 2012 00:04:51 +0000
parents 2cd533f149b7
children 9d7e5f690f28
comparison
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62:2cd533f149b7 63:2994e5e485e7
747 informative of notes at different periodicities (\ie hypothetical 747 informative of notes at different periodicities (\ie hypothetical
748 bar lengths) and phases (\ie positions within a bar). 748 bar lengths) and phases (\ie positions within a bar).
749 } 749 }
750 \end{fig} 750 \end{fig}
751 751
752 \subsection{Content analysis/Sound Categorisation} 752 \subsection{Audio based content analysis}
753 Using analogous definitions of differential entropy, the methods outlined 753 Using analogous definitions of differential entropy, the methods outlined
754 in the previous section are equally applicable to continuous random variables. 754 in the previous section are equally applicable to continuous random variables.
755 In the case of music, where expressive properties such as dynamics, tempo, 755 In the case of music, where expressive properties such as dynamics, tempo,
756 timing and timbre are readily quantified on a continuous scale, the information 756 timing and timbre are readily quantified on a continuous scale, the information
757 dynamic framework thus may also be considered. 757 dynamic framework may also be considered.
758 758
759 In \cite{Dubnov2006}, Dubnov considers the class of stationary Gaussian 759 In \cite{Dubnov2006}, Dubnov considers the class of stationary Gaussian
760 processes. For such processes, the entropy rate may be obtained analytically 760 processes. For such processes, the entropy rate may be obtained analytically
761 from the power spectral density of the signal, allowing the multi-information 761 from the power spectral density of the signal, allowing the multi-information
762 rate to be subsequently obtained. 762 rate to be subsequently obtained. One aspect demanding further investigation
763 % Local stationarity is assumed, which may be achieved by windowing or 763 involves the comparison of alternative measures of predictability. In the case of the PIR, a Gaussian linear formulation is applicable, indicating that the PIR is a function of the correlation between random innovations supplied to the stochastic process CITE.
764 % change point detection \cite{Dubnov2008}. 764 % !!! FIXME
765 %TODO
766 mention non-gaussian processes extension Similarly, the predictive information
767 rate may be computed using a Gaussian linear formulation CITE. In this view,
768 the PIR is a function of the correlation between random innovations supplied
769 to the stochastic process. %Dubnov, MacAdams, Reynolds (2006) %Bailes and
770 Dean (2009)
771
772 % !!! FIXME
773 [ Continuous domain information ]
774 [Audio based music expectation modelling]
775 [ Gaussian processes]
776 765
777 766
778 \subsection{Beat Tracking} 767 \subsection{Beat Tracking}
779 768
780 A probabilistic method for drum tracking was presented by Robertson 769 A probabilistic method for drum tracking was presented by Robertson