Signal Processing Strategies for Cochlear Implants Using Current Steering

Nogueira W, Litvak L, Edler B, Ostermann J, Büchner A (2009)

Publication Type: Journal article

Publication year: 2009

Journal

EURASIP Journal on Advances in Signal Processing SpringerOpen

Book Volume: 2009

Pages Range: 20

Article Number: 531213

DOI: 10.1155/2009/531213

Abstract

In contemporary cochlear implant systems, the audio signal is decomposed into different frequency bands, each assigned to one electrode. Thus, pitch perception is limited by the number of physical electrodes implanted into the cochlea and by the wide bandwidth assigned to each electrode. The Harmony HiResolution bionic ear (Advanced Bionics LLC, Valencia, CA, USA) has the capability of creating virtual spectral channels through simultaneous delivery of current to pairs of adjacent electrodes. By steering the locus of stimulation to sites between the electrodes, additional pitch percepts can be generated. Two new sound processing strategies based on current steering have been designed, SpecRes and SineEx. In a chronic trial, speech intelligibility, pitch perception, and subjective appreciation of sound were compared between the two current steering strategies and standard HiRes strategy in 9 adult Harmony users. There was considerable variability in benefit, and the mean results show similar performance with all three strategies. © 2009 Waldo Nogueira et al.

Authors with CRIS profile

Bernd Edler Lehrstuhl für Audiosignalanalyse (AudioLabs)

Involved external institutions

Medizinische Hochschule Hannover (MHH) / Hannover Medical School DE Germany (DE) Gottfried Wilhelm Leibniz Universität Hannover DE Germany (DE)

How to cite

APA:

Nogueira, W., Litvak, L., Edler, B., Ostermann, J., & Büchner, A. (2009). Signal Processing Strategies for Cochlear Implants Using Current Steering. EURASIP Journal on Advances in Signal Processing, 2009, 20. https://doi.org/10.1155/2009/531213

MLA:

Nogueira, Waldo, et al. "Signal Processing Strategies for Cochlear Implants Using Current Steering." EURASIP Journal on Advances in Signal Processing 2009 (2009): 20.

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