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Titre : | Using Microphone Technology to Improve Speech Perception in Noise in Children with Cochlear Implants (2018) |
Auteurs : | Patty M. Johnstone ; Kristen E.T. Mills ; Elizabeth Humphrey ; et al. |
Type de document : | Article |
Dans : | Journal of the American Academy of Audiology (JAAA) (Vol.29, n° 9, October 2018) |
Article en page(s) : | p. 814-825 |
Langues: | Anglais |
Descripteurs : |
HE Vinci Enfant implanté ; Microphone à distance sans fil (RM) ; Microphone adaptatif directionnel (ADM) |
Résumé : |
Cochlear implant (CI) users are affected more than their normal hearing (NH) peers by the negative consequences of background noise on speech understanding. Research has shown that adult CI users can improve their speech recognition in challenging listening environments by using dual-microphone beamformers, such as adaptive directional microphones (ADMs) and wireless remote microphones (RMs). The suitability of these microphone technologies for use in children with CIs is not well-understood nor widely accepted.
To assess the benefit of ADM or RM technology on speech perception in background noise in children and adolescents with cochlear implants (CIs) with no previous or current use of ADM or RM. CI users listened with an ear-canal level microphone, T-Mic (TM), an ADM, and a wireless RM at different audio-mixing ratios. Speech understanding with five microphone settings (TM 100%, ADM, RM + TM 50/50, RM + TM 75/25, RM 100%) was evaluated in quiet and in noise. Speech perception ability was measured using childrens spondee words to obtain a speech recognition threshold for 80% accuracy (SRT80%) in 20-talker babble where the listener sat in a sound booth 1 m (3.28′) from the target speech (front) and noise (behind) to test five microphone settings (TM 100%, ADM, RM + TM 50/50, RM + TM 75/25, RM 100%). Group performance-intensity functions were computed for each listening condition to show the effects of microphone configuration with respect to signal-to-noise ratio (SNR). A difference score (CI Group minus NH Group) was computed to show the effect of microphone technology at different SNRs relative to NH. Statistical analysis using a repeated-measures analysis of variance evaluated the effects of the microphone configurations on SRT80% and performance at SNRs. Between-groups analysis of variance was used to compare the CI group with the NH group. |
Disponible en ligne : | Oui |
En ligne : | https://login.ezproxy.vinci.be/login?url=https://medone-comsci.thieme.com/ejournals/2157-3107_2018_09?context=search#/10.3766-jaaa.17035 |
Exemplaires (1)
Cote | Support | Localisation | Section | Disponibilité |
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Journal of the American Academy of Audiology (JAAA). Vol.29, n°9 (October 2018) | Périodique papier | Ixelles | Rez | Consultation sur place uniquement Exclu du prêt |