14th International Congress of Phonetic Sciences (ICPhS-14)
San Francisco, CA, USA
The notion of "vocal efficiency" is difficult to define. In order to contribute to this definition, several data were obtained: first the evaluation of glottal efficiency Eg using an acoustic analysis was obtained. Second, we run a study asking subjects to find synonyms of vocal effectiveness. Results showed the prevalence of the perceptual aspect over the communication and production aspects. This concept depends on the vocal use by persons. The subjects insist on the notion of carrying power without fatigue whatever the context. Some acoustic measurements of singing power Ratio, an acoustic correlate of this perceptual aspect, were conducted in opera pieces with and without pianistic accompaniement: the singing-formant, a well known perceptive correlate of vocal effectiveness, was always present whatever the condition. So it appears that the concept of vocal effectiveness has a polysemous definition regarding subject vocal perception (auditor), production (singer) and communication (the public).
Bibliographic reference. Pillot, Claire (1999): "Subjective and acoustical data about vocal effectiveness in western opera: preliminary results", In ICPhS-14, 2445-2448.