Auditory-Motor Perturbations of Voice Fundamental Frequency: Feedback Delay and Amplification
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| Title: | Auditory-Motor Perturbations of Voice Fundamental Frequency: Feedback Delay and Amplification |
|---|---|
| Language: | English |
| Authors: | Weerathunge, Hasini R. (ORCID |
| Source: | Journal of Speech, Language, and Hearing Research. Sep 2020 63(9):2846-2860. |
| Availability: | American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org |
| Peer Reviewed: | Y |
| Page Count: | 15 |
| Publication Date: | 2020 |
| Sponsoring Agency: | National Institute on Deafness and Other Communication Disorders (NIDCD) |
| Contract Number: | P50DC015446 T32DC013017 R01DC016270 |
| Document Type: | Journal Articles Reports - Research |
| Descriptors: | Acoustics, Articulation (Speech), Auditory Stimuli, Young Adults, Auditory Perception, Feedback (Response) |
| DOI: | 10.1044/2020_JSLHR-19-00407 |
| ISSN: | 1092-4388 |
| Abstract: | Purpose: Gradual and sudden perturbations of vocal fundamental frequency (f[subscript o]), also known as adaptive and reflexive f[subscript o] perturbations, are techniques to study the influence of auditory feedback on voice f[subscript o] control mechanisms. Previous vocal f[subscript o] perturbations have incorporated varied setup-specific feedback delays and amplifications. Here, we investigated the effects of feedback delays (10--100 ms) and amplifications on both adaptive and reflexive f[subscript o] perturbation paradigms, encapsulating the variability in equipment-specific delays (3--45 ms) and amplifications utilized in previous experiments. Method: Responses to adaptive and reflexive f[subscript o] perturbations were recorded in 24 typical speakers for four delay conditions (10, 40, 70, and 100 ms) or three amplification conditions (-10, +5, and +10 dB relative to microphone) in a counterbalanced order. Repeated-measures analyses of variance were carried out on the magnitude of f[subscript o] responses to determine the effect of feedback condition. Results: There was a statistically significant effect of the level of auditory feedback amplification on the response magnitude during adaptive f[subscript o] perturbations, driven by the difference between +10- and -10-dB amplification conditions (hold phase difference: M = 38.3 cents, SD = 51.2 cents; after-effect phase: M = 66.1 cents, SD = 84.6 cents). No other statistically significant effects of condition were found for either paradigm. Conclusions: Experimental equipment delays below 100 ms in behavioral paradigms do not affect the results of f[subscript o] perturbation paradigms. As there is no statistically significant difference between the response magnitudes elicited by +5- and +10-dB auditory amplification conditions, this study is a confirmation that an auditory feedback amplification of +5 dB relative to microphone is sufficient to elicit robust compensatory responses for f[subscript o] perturbation paradigms. |
| Abstractor: | As Provided |
| Entry Date: | 2021 |
| Accession Number: | EJ1280535 |
| Database: | ERIC |
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