Vocal effort is the perceived exertion of voicing. Patients with voice disorders (VDs) frequently complain of increased effort, but currently there exists no empirically validated scale for the measurement of vocal effort. This article reviews the extant literature on vocal effort and its various definitions. It also presents a preliminary investigation on the use of a psychophysical scale, the Borg Category Ratio (CR-10), for vocal effort ratings.
Baldner, Elizabeth Ford; Doll, Emerald; van Mersbergen, Ruth (2015) A Review of Measures of Vocal Effort With a Preliminary Study on the Establishment of a Vocal Effort Measure. In: Journal of Voice: Official Journal of the Voice Foundation, Vol. 29, No. 5, pp. 530-541. Available at https://openmusiclibrary.org/article/70841/.