2015/09/13 by Ketan Mehta, Mehta, Ketan, Jörg Kliewer +1
Biochemistry, Genetics and Molecular Biology · Computer Science · Engineering · Mathematics · Neuroscience · #Advanced Adaptive Filtering Techniques #Blind Source Separation Techniques #FOS: Biological sciences #FOS: Computer and information sciences #Information Theory (cs.IT) #Neural Networks and Applications #Neural dynamics and brain function #Neurons and Cognition (q-bio.NC) #cs.IT #math.IT #q-bio.NC
paper · pdf · doi:10.48550/arxiv.1509.03937
29 pages, 10 figures, IEEE Transactions on Molecular, Biological and Multi-scale Communications
openalex publication_date 2015/09/13 · arxiv created 2015/09/14 · arxiv updated 2015/09/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this paper, we propose a novel information theoretic model to interpret the entire "transmission chain" comprising stimulus generation, brain processing by the human subject, and the electroencephalograph (EEG) response measurements as a nonlinear, time-varying communication channel with memory. We use mutual information (MI) as a measure to assess audio quality perception by directly measuring the brainwave responses of the human subjects using a high resolution EEG. Our focus here is on audio where the quality is impaired by time varying distortions. In particular, we conduct experiments where subjects are presented with audio whose quality varies with time between different possible quality levels. The recorded EEG measurements can be modeled as a multidimensional Gaussian mixture model (GMM). In order to make the computation of the MI feasible, we present a novel low-complexity approximation technique for the differential entropy of the multidimensional GMM. We find the proposed information theoretic approach to be successful in quantifying subjective audio quality perception, with the results being consistent across different music sequences and distortion types.