Contributions of Forward-Focused Voice to Audio-Vocal Feedback Measured Using Nasal Accelerometry and Power Spectral Analysis of Vocal Fundamental Frequency

Autor/inn/en	Lee, Shao-Hsuan; Torng, Pao-Chuan; Lee, Guo-She
Titel	Contributions of Forward-Focused Voice to Audio-Vocal Feedback Measured Using Nasal Accelerometry and Power Spectral Analysis of Vocal Fundamental Frequency
Quelle	In: Journal of Speech, Language, and Hearing Research, 65 (2022) 5, S.1751-1766 (16 Seiten) PDF als Volltext Verfügbarkeit
Zusatzinformation	ORCID (Lee, Guo-She)
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Acoustics; Articulation (Speech); Feedback (Response); Vowels; Intonation; Human Body + Suchen Sie Ihr Suchwort? Akustik; Menschlicher Körper
Abstract	Purpose: The spectral powers of the modulations of vocal fundamental frequency (f[subscript o]) less than 3 Hz (low-frequency power, LFP) and between 3 and 8 Hz (middle-frequency power, MFP) had been established to indicate the audiovocal feedback status and vocal efficiency of a speaker, and a resonant voice may enhance the auditory-vocal feedback. This study aims to determine whether the auditory feedback can be augmented by a forward and resonant voice and therefore contribute to the modulations of f[subscript o] variability. Method: Vocal signals and accelerometric signals of lateral nasal cartilage were obtained from 27 healthy adults who, respectively, sustained vowels /a/ and /i/ with their habitual speaking voice and with a forward-focused voice under three auditory conditions: natural hearing (N0), high-level noise exposure (N90), and low-level noise exposure (N60). Nasal skin vibrations were measured using a nasal accelerometry to reflect voice resonance status. Vocal intensity and f[subscript o] variability were also analyzed to show the auditory-vocal interactions under varied conditions of auditory feedback and voice resonance. Results: In both N0 and N90 conditions, forward-focused voice showed a significantly lower LFP than the speakers' habitual voice. In addition, LFP of f[subscript o] would significantly increase during natural voice production as the voice feedback was greatly masked by high-intensity noise; however, with a forward-focused voice, the noise-induced variation in LFP was significantly decreased. Under N90, MFP significantly decreased during forward-focused voice production compared with that measured during natural voice production. The stability of f[subscript o] modulations was not adversely affected by N60. Conclusion: The results support the idea that vocalizing with a forward-focused voice enhances the auditory feedback of the speaker's own voice and, thus, reduces the variability of f[subscript o] during sustained phonation, especially when vocalizing in the high noise condition. (As Provided).
Anmerkungen	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
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2024/1/01