Responses of Middle-Frequency Modulations in Vocal Fundamental Frequency to Different Vocal Intensities and Auditory Feedback

Lee, Shao Hsuan; Fang, Tuan‐Jen; Yu, Jen‐Fang; Lee, Guo She

doi:10.1016/j.jvoice.2017.01.015

Cited by 4 publications

(11 citation statements)

References 42 publications

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“…The middle‐frequency fluctuations of F0 resulted from the neuromuscular modulations of vocal output such as vibrato, and patients with several central neurological disorders, including Parkinsonism and cerebellar disorders, were reported to have greater F0 fluctuations in this frequency range. Our previous works also showed that the MFP of F0s tended to decrease significantly under speech noise and/or louder vocal intensity for the healthy individuals and the hearing‐impaired people . This study further revealed that speech noise also significantly decreased the MFPs in the patients with vocal fold nodules, vocal fold polyp and vocal fold cyst.…”

Section: Discussionsupporting

confidence: 74%

“…MPT is a measure of vocal efficiency and usually becomes shortened due to a variety of vocal problems such as vocal fold pathologies, vocal fold paralysis and respiratory disturbance. Our previous and present studies have revealed that the auditory masking with speech noise can significantly lengthen MPT in the healthy, vocal fold polyp and vocal fold cyst groups . However, the patients with vocal fold nodules did not show a similar change of MPT under a same audio‐vocal feedback condition.…”

Section: Discussioncontrasting

confidence: 51%

“…In this research, using power spectral analysis of F0, the patients with vocal fold nodules presented a significantly different audio‐vocal feedback from the patients with the other two vocal fold pathologies and from the healthy controls. According to our previous research, the low‐frequency modulations of F0, that is LFP, indicated the status of auditory feedback and significantly increased by noise masking for healthy individuals . And also, LFP became significantly greater for the age‐matched and sex‐matched subjects with sensorineural hearing loss .…”

Section: Discussionmentioning

confidence: 86%

“…This study further revealed that speech noise also significantly decreased the MFPs in the patients with vocal fold nodules, vocal fold polyp and vocal fold cyst. Since raising vocal intensity or lacking of natural auditory feedback tends to induce similar effects on the middle‐frequency modulations of F0, this finding may imply a greater stress on the neuromuscular phonation control system when vocalising in noise . Furthermore, the MFPs became notably greater in the three groups with the vocal disorders compared to the healthy speakers, and the irregular vocal fold oscillations caused by vocal pathologies may be involved in the increment of MFPs.…”

Section: Discussionmentioning

confidence: 93%

“…Current findings focused on auditory‐vocal feedback control have correlated the HFP of F0 with the mechanical properties of vocal fold vibrations like vocal jitters . The HFP was greatly decreased not only by loud vocal productions in the healthy individuals and the hearing‐impaired speakers but also by noise masking in the healthy participants and patients with vocal fold nodules or vocal fold polyp. Like the MFP of F0, noise masking and loud voice production make similar vocal adjustments in the HFP, and the results may imply that vocal disorders would lead to a greater stress on laryngeal vibratory mechanisms during a prolonged vocalisation in noise.…”

Section: Discussionmentioning

confidence: 99%

See 4 more Smart Citations

Vocal fold nodules: A disorder of phonation organs or auditory feedback?

Lee

Fang

et al. 2019

Clinical Otolaryngology

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Objective Increasing evidence supports that auditory feedback of one's own voice closely relates to real‐time adjustments of vocal control. Previous studies highlighted that the low‐frequency modulations of below 3 Hz (LFM) embedded in vocal fundamental frequency (F0) showed a reflex‐like response to altered auditory inputs. However, the auditory feedback control of different vocal disorders remains unclear. Design A cross‐sectional, case‐controlled study. Setting A tertiary medical centre. Participants Sustained vocalisations of vowel/a/ from adult healthy controls and patients with vocal fold nodules, vocal fold polyps and vocal fold cysts, respectively. The vocalisations were made at a comfortable pitch and at the intensity of 70 ~ 80 dBC under the following four auditory conditions: natural hearing, 90‐dBC speech noise, 10‐dBC enhanced feedback of self‐produced voice and both the noise and voice feedback. Main outcome measures Power spectral analysis of F0 contour of sustained vowel. Results Patients with vocal fold nodules presented with different audio‐vocal feedback behaviour and audio‐vocal response to speech noise from the other two vocal pathologies of vocal fold polyp and vocal fold cyst as well as the healthy controls (P < .001, one‐way ANOVA). Conclusion The vocal fold nodules may be not only a vocal fold disease but also a disease caused by abnormal audio‐vocal feedback. Moreover, the distinct audio‐vocal feedback of vocal fold nodules could be revealed by power spectral analysis of vocal fundamental frequencies. Although further investigations are necessary, adjustments of audio‐vocal feedback behaviour may provide a new insight and benefit to the treatment of vocal fold nodules in the future.

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Section: Discussionsupporting

confidence: 74%

Section: Discussioncontrasting

confidence: 51%

Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 93%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Vocal fold nodules: A disorder of phonation organs or auditory feedback?

Lee

Fang

et al. 2019

Clinical Otolaryngology

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Long-term Average Spectrum and Nasal Accelerometry in Sentences of Differing Nasality and Forward-Focused Vowel Productions Under Altered Auditory Feedback

Lee

2022

Journal of Voice

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

Lee

Torng

Lee

2022

J Speech Lang Hear Res

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Purpose: The spectral powers of the modulations of vocal fundamental frequency ( f 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 audio-vocal 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 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 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 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 o modulations was not adversely affected by N60. Conclusion: The results support the idea that vocalizing with a forward-focused voice enhance the auditory feedback of the speaker's own voice and, thus, reduce the variability of f o during sustained phonation, especially when vocalizing in the high noise condition.

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Responses of Middle-Frequency Modulations in Vocal Fundamental Frequency to Different Vocal Intensities and Auditory Feedback

Cited by 4 publications

References 42 publications

Vocal fold nodules: A disorder of phonation organs or auditory feedback?

Vocal fold nodules: A disorder of phonation organs or auditory feedback?

Long-term Average Spectrum and Nasal Accelerometry in Sentences of Differing Nasality and Forward-Focused Vowel Productions Under Altered Auditory Feedback

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

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