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Vanheusden, F.J. 
ORCID: 0000-0003-2369-6189, Chesnaye, M.A., Simpson, D.M. and Bell, S.L.,
2019.
Envelope frequency following responses are stronger for high-pass than low-pass filtered vowels.
International Journal of Audiology, 58 (6), pp. 355-362.
ISSN 1499-2027
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Abstract
Background: To assess hearing in response to speech, the envelope frequency following response (FFR) can be observed at the fundamental frequency of a vowel stimulus, and its harmonics. FFRs are complex non-linear phenomena, which require better understanding for allowing robust inferences on the assessment of hearing and hearing aid fitting.
Objectives: To evaluate the effect of stimulus bandwidth on FFR detection rates using filtered vowel stimuli with equal sound levels.
Design: FFRs were collected whilst presenting repeated vowels (in consonant-vowel-consonant format) filtered into different bandwidths. Eighty stimuli per word were presented at 70 dB SPL LAeq through insert earphones with an inter-stimulus interval of 1s. Responses were detected using frequency-domain Hotelling’s T2 (HT2) tests for individual multiples of the fundamental frequency (F0) and for combinations of F0 multiples.
Study Sample: Eleven native English-speaking subjects with normal hearing thresholds.
Results: Average detection rates are highest (69%) with stimuli high-pass filtered >1000 Hz, and significantly lower for low-pass filtered stimuli (40%).
Conclusion: High-pass filtered vowels elicit stronger FFRs than low-pass filtered vowels at the same dB SPL LAeq. For testing hearing using band-limited speech, filtering effects (due to hearing loss, hearing aid setting or stimulus choice) on responses must be considered.
| Item Type: | Journal article | ||||
|---|---|---|---|---|---|
| Publication Title: | International Journal of Audiology | ||||
| Creators: | Vanheusden, F.J., Chesnaye, M.A., Simpson, D.M. and Bell, S.L. | ||||
| Publisher: | Taylor & Francis | ||||
| Date: | 24 January 2019 | ||||
| Volume: | 58 | ||||
| Number: | 6 | ||||
| ISSN: | 1499-2027 | ||||
| Identifiers: |
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| Divisions: | Schools > School of Science and Technology | ||||
| Record created by: | Jonathan Gallacher | ||||
| Date Added: | 10 Jan 2019 10:07 | ||||
| Last Modified: | 24 Jan 2020 03:00 | ||||
| URI: | https://irep.ntu.ac.uk/id/eprint/35521 |
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