Contribution of noise reduction pre-processing and microphone directionality strategies in the speech recognition in noi
- PDF / 669,190 Bytes
- 6 Pages / 595.276 x 790.866 pts Page_size
- 112 Downloads / 224 Views
OTOLOGY
Contribution of noise reduction pre‑processing and microphone directionality strategies in the speech recognition in noise in adult cochlear implant users Maria Valeria Schmidt Goffi‑Gomez1 · Lilian Muniz2 · Gislaine Wiemes3 · Lucia Cristina Onuki4 · Luciane Calonga4 · Francisco José Osterne5 · Maria Isabel Kós5 · Fernanda Ferreira Caldas6 · Carolina Cardoso6 · Byanka Cagnacci7 Received: 7 May 2020 / Accepted: 10 September 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Purpose Refinement currently offered in new sound processors may improve noise listening capability reducing constant background noise and enhancing listening in challenging signal-to-noise conditions. This study aimed to identify whether the new version of speech processor preprocessing strategy contributes to speech recognition in background noise compared to the previous generation processor. Methods This was a multicentric prospective cross-sectional study. Post-lingually deaf adult patients, with at least 1 year of device use and speech recognition scores above 60% on HINT sentences in quiet were invited. Speech recognition performance in quiet and in noise with sound processors with previous and recent technologies was assessed under four conditions with speech coming from the front: (a) quiet (b) fixed noise coming from the front, (c) fixed noise coming from the back, and (d) adaptive noise ratios with noise coming from the front. Results Forty-seven cochlear implant users were included. No significant difference was found in quiet condition. Performance with the new processor was statistically better than the previous sound processor in all three noisy conditions (p
Data Loading...
