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Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
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Vibrato Synchronicity in Sustained Notes From Female Singers Blending to a Prerecorded Singer
Gerardo Acosta Martínez1, Helena Daffern1
1AudioLab, University of York, Innovation Way, Heslington, York YO10 5DQ, United Kingdom.
Journal of Voice : Official Journal of the Voice Foundation
|September 21, 2025
Summary
Singers synchronize their vocal vibrato when blending with others, modifying pitch, intensity, and timbre. This study provides evidence for vibrato synchronization in group singing, impacting pedagogical practices.
Area of Science:
- Vocal pedagogy
- Acoustic musicology
- Singing science
Background:
- Vibrato, a modulation in singing voice, influences choral blend.
- Evidence suggests vibrato coupling and entrainment occur during group singing.
Purpose of the Study:
- To assess vibrato modifications and interactions in blended group singing versus solo singing.
- To test if singers synchronize vibrato to aid blending with others.
Main Methods:
- Female singers performed solo and blended with a reference track.
- Vibrato parameters (rate, extent, jitter, shimmer) and phase synchronization (RQA) were analyzed.
- Singing occurred on /i/ and /a/ vowels at specific pitches (E4-E5).
Main Results:
- Singers altered vibrato rate, extent, jitter, and shimmer when blending.
- High levels of vibrato synchronization were achieved by participants.
- Synchronization was negatively correlated with baseline vibrato rate regularity.
Conclusions:
- Further evidence supports vibrato synchronization in group singing.
- The mechanism (conscious or unconscious) of vibrato synchronization remains unclear.
- Findings are relevant for solo and group singing pedagogy, highlighting the need for further research on entrainment.
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