Casaponsa_etal_PO19.pdf (1.14 MB)
Does training with amplitude modulated tones affect tone-vocoded speech perception?
journal contribution
posted on 2020-01-22, 11:42 authored by Aina Casaponsa, Ediz Sohoglu, David R. Moore, Christian Fullgrabe, Katharine Molloy, Sygal AmitayTemporal-envelope cues are essential for successful speech perception. We asked here whether training on stimuli containing temporal-envelope cues without speech content can improve the perception of spectrally-degraded (vocoded) speech in which the temporal-envelope (but not the temporal fine structure) is mainly preserved. Two groups of listeners were trained on different amplitude-modulation (AM) based tasks, either AM detection or AM-rate discrimination (21 blocks of 60 trials during two days, 1260 trials; frequency range: 4Hz, 8Hz, and 16Hz), while an additional control group did not undertake any training. Consonant identification in vocoded vowel-consonant-vowel stimuli was tested before and after training on the AM tasks (or at an equivalent time interval for the control group). Following training, only the trained groups showed a significant improvement in the perception of vocoded speech, but the improvement did not significantly differ from that observed for controls. Thus, we do not find convincing evidence that this amount of training with temporal-envelope cues without speech content provide significant benefit for vocoded speech intelligibility. Alternative training regimens using vocoded speech along the linguistic hierarchy should be explored.
Funding
Medical Research Council (UK) Grant U135097130
History
School
- Sport, Exercise and Health Sciences
Published in
PLoS ONEVolume
14Issue
12Publisher
Public Library of ScienceVersion
- VoR (Version of Record)
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© Casaponsa et al.Publisher statement
This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.Acceptance date
2019-11-22Publication date
2019-12-27Copyright date
2019eISSN
1932-6203Publisher version
Language
- en
Depositor
Dr Christian Fullgrabe. Deposit date: 18 January 2020Article number
e0226288Usage metrics
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