INDEPENDENT COMPONENT ANALYSIS FOR AUDIO AND BIOSIGNAL APPLICATIONS pps

... process:  x 1 x 2  =  12 11  s 1 s 2  13 Introduction: Independent Component Analysis INDEPENDENT COMPONENT ANALYSIS FOR AUDIO AND BIOSIGNAL APPLICATIONS Edited by Ganesh R. Naik On Temporomandibular Joint Sound Signal Analysis ... Overcomplete ICA has major applications in bio signal p rocessing, 14 Independent Component Analysis for Aud...

Ngày tải lên: 29/06/2014, 13:20

... a and 22.4 b that PCA is unable to resolve the complex brain response, whereas the ICA technique produces cleaner and sparser response components. For each component presented in Fig. 22.4 a and ... human brain, both for research and clinical purposes. It is in fact one of the most widespread brain mapping techniques to date. EEG is used both for the measurement of sponta- neo...

Ngày tải lên: 20/01/2014, 11:20

... Fig- ures 12(a), 13(a) ,and1 4(a) in these three scenarios. Their classification results for WM, GM, and CSF are also shown in Figures 12(b) and 12(c), 13(b) and 13(c) ,and1 4(b) and 14(c) where both ... transform three band MR im- ages into three statistically independent component images so that these three ICA-generated independent components (ICs) can be stacked one atop an...

Ngày tải lên: 21/06/2014, 22:20

... This higher-order statistical information (i.e., information not contained in the mean and the covariance matrix) can be utilized, and therefore, the independent components can be actually separated, which ... of explicitly formulated objective functions, one can use any of the classic optimization methods, for example, (stochastic) gradient methods and Newton 273 Independent Com...

Ngày tải lên: 23/12/2013, 07:19

... transform to both sides of Eq. (19.19). Denoting by , ,and the Fourier transforms of , ,and , respectively, we obtain for (19.29) This shows that the convolutive mixturemodel ( 19.19) is transformed into ... and the standard ICA problem on a general level [430]. Recall first than in standard linear ICA and BSS, the indeterminacies are the scaling and the order of the estimated indep...

Ngày tải lên: 20/01/2014, 11:20

... series and prewhitening (after which each time series has zero mean and unit variance), the independent components 24 Other Applications In this chapter, we consider some further applications of independent ... flexible and allows various smoothing tolerances and different orders in the classic AR prediction method for each independent component. In reality, especially in...

Ngày tải lên: 20/01/2014, 11:20

... Hawaii, USA, July 2000. [20] D. Landgrebe, “Some fundamentals and methods for hyper- spectral image data analysis, ” in Systems and Technologies for Clinical Diagnostics and Drug Discovery II , vol. ... 1483–1492, 1997. [2] M. Bartlett and T. Sejnowski, “Viewpoint invariant face recog- nition using independent component analysis and attractor networks,” in Advances in Neu...

Ngày tải lên: 22/06/2014, 22:20

... on Speech and Audio Processing). [13] D. Kolossa and R. Orglmeister, “Nonlinear postprocessing for blind speech separation,” in Proceedings of 5th International Workshop on Independent Component Analysis ... t), and (c) result of binary masking between (a) and (b);  Y 1 ( f , t). Gain Frequency S 1 ( f , t) component S 2 ( f , t) component (a) Gain Frequency S 1 ( f , t...

Ngày tải lên: 22/06/2014, 23:20

... assumption, standard in factor analysis and signal processing, and allows for a simple formulation of the noisy model. Thus, the noisy ICA model can be expressed as x = As + n (15.1) 293 Independent Component ... noise in the data before performing ICA. For example, simple filtering of time-signals is often very useful in this respect, and so is dimension reduction by principal...

Ngày tải lên: 17/10/2013, 19:15

... the realizations of the independent components, and C is an irrelevant constant. The functions f i are the log-densities of the independent components. Maximization of (16.7) with respect to A and s i could ... ESTIMATION OF THE INDEPENDENT COMPONENTS 16.1.1 Maximum likelihood estimation Many methods for estimating the mixing matrix use as subroutines methods that estimate the in...

Ngày tải lên: 20/10/2013, 10:15