Environment-adaptive speech enhancement for bilateral cochlear implants using a single processor

Authors:
Taher S. Mirzahasanloo;Nasser Kehtarnavaz;Vanishree Gopalakrishna;Philipos C. Loizou
Affiliations:
Department of Electrical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA;Department of Electrical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA;Department of Electrical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA;Department of Electrical Engineering, University of Texas at Dallas, Richardson, TX 75080, USA
Venue:
Speech Communication
Year:
2013

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Abstract

A computationally efficient speech enhancement pipeline in noisy environments based on a single-processor implementation is developed for utilization in bilateral cochlear implant systems. A two-channel joint objective function is defined and a closed form solution is obtained based on the weighted-Euclidean distortion measure. The computational efficiency and no need for synchronization aspects of this pipeline make it a suitable solution for real-time deployment. A speech quality measure is used to show its effectiveness in six different noisy environments as compared to a similar one-channel enhancement pipeline when using two separate processors or when using independent sequential processing.