Vishnuvardhan Varanasi — accepted AI-conference papers

2018

Stochastic Online Dictionary Learning for Speech Source Localization and Separation in Spherical Harmonic Domain

ICASSP 2018accepted

Frequency and location dependent components in the speech signal can be decoupled by signal processing in the spherical harmonic domain. In this paper, a sparsity based method for joint source localization and separation method using online dictionary learning is proposed. Conventional sparsity base…

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2017

Robust online direction of arrival estimation using low dimensional spherical harmonic features

Vishnuvardhan Varanasi, Rajesh M. Hegde

ICASSP 2017accepted

Signal processing in spherical harmonic domain has the ability to decouple frequency dependent and location dependent components of the signal received. A method for low dimensional spherical harmonic feature extraction is proposed in this work for DOA estimation in noisy and reverberant environment…

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