Nonlinear ISA with Auxiliary Variables for Learning Speech Representations

25 Jul 2020 Amrith Setlur Barnabas Poczos Alan W. black

This paper extends recent work on nonlinear Independent Component Analysis (ICA) by introducing a theoretical framework for nonlinear Independent Subspace Analysis (ISA) in the presence of auxiliary variables. Observed high dimensional acoustic features like log Mel spectrograms can be considered as surface level manifestations of nonlinear transformations over individual multivariate sources of information like speaker characteristics, phonological content etc... (read more)

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