Questions:
1) Does vocal warm-up condition (no warm-up, traditional, or semioccluded) significantly alter the singing power ratio (SPR)?
2) Does SPR differ with vowel type?
3) Is effort (perceived phonatory effort (PPE)) affected by warm-up conditions?
Results:
The team found that perceived phonatory effort is not affected by warm-up conditions; singing power ratio is not affected by warm-up conditions; and SPR is affected by vowel with /i/ being the lowest.
Thoughts:
Vocal warm-ups are widely considered to be an essential part of vocal health and hygiene. This paper is another in a long line of papers that have been unable to provide a measurable benefit to the practice. Greater significance may be found in a large data set as the sample size for this study was limited.
Reference: Duke, E., Plexico, L. W., Sandage, M. J., & Hoch, M. (2015). The Effect of Traditional Singing Warm-Up Versus Semioccluded Vocal Tract Exercises on the Acoustic Parameters of Singing Voice. Journal of voice : official journal of the Voice Foundation, 29(6), 727–732. https://doi.org/10.1016/j.jvoice.2014.12.009
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