Research project Prosodic functions of voice quality dynamics
In the Anechoic chamber. Photo by Lena Katarina Johansson
When we speak, we vary several aspects of our voices – we might speak louder or softer, with higher or lower pitch. Another aspect which changes continuously is voice quality (VQ), a perceptual characteristics of voice attributable largely to the mode of vocal fold vibration which corresponds to its harsh or breathy timbre, for example.
This project attempts to describe pragmatic functions of VQ in spontaneous conversations, with particular emphasis on management of speaker change and marking of prosodic prominence.
In order to overcome the usual difficulties of obtaining robust correlates of VQ in spontaneous speech, the project uses miniature neck surface accelerometers (”throat microphones”). The project thus aims to provide a comprehensive account of a crucial but overlooked aspect of speech communication. It also provides a naturalistic setting for evaluating and further developing VQ estimation methods.
The results will be integrated into established computational models of interaction, leading to improvements of speech-technology solutions. The methods developed within the project will also have implications for voice therapy and rehabilitation.