Voice and Speech Science Laboratory
The Voice and Speech Science Research Laboratory is designed to conduct research both at the Master's and Ph.D. levels in the areas of voice and speech science. Current and future research include:
- Acoustic, physiology, and percpetion of singing
- acoustics of cultural diversity
- normative data - vocal physiology
- experimental phonetics - duration modeling
- phoneme acquisition in second language speakers
- Effects of music, spoken language, and sung language on semantic processing
Currently, the laboratory is working on 3 large scale projects. One project seeks to determine how listeners use vocal productions across vowels, pitches, and loudness levels to determine the identity or voice category of a specific speaker or singer. A second project seeks to determine the effects of instrumental music, sung music, and spoken language on semantic processing in normal and special population listeners. A third project seeks to determine how second language learners of Portuguese acquire phonemes that are Portuguese specific. There are also numerous smaller scale projects being conducted in the laboratory related to the production, acoustics, and perception of the singing voice.
The Voice and Speech Science Research Laboratory is equipped with a large sound booth for recording speakers and professional singers.
The laboratory boasts equipment and software capable of performing a variety of research tasks: a Glottal Enterprises system for air flow analysis, subglottal air pressure measurement, and 2-channel electroglottograph and inverse filtering via C-Speech.Signal analysis software available include the Computerized Speech Laboratory and the Multi-Dimensional Voice Profile from Kay Elemetrics, C-Speech, CSRE, Cool Edit, and a variety of programs used to produce real-time spectrograms and Fast Fourier Analysis.
The laboratory has available several methods of signal synthesis: signal generation hardware and software from Tucker-Davis Technologies, a Klatt synthesizer as implemented in CSRE, and a singing voice synthesizer built using Aladdin. Perceptual experiments are designed and conducted using a variety of software and hardware combinations.
The Voice and Speech Science Research Laboratory also is equipped with a Kay Elemetrics stroboscopy system that is used to visualize the vocal folds for both voice physiology research and clinical diagnostics.
Celebrate the past, present, and future of ASP with us in the pages of the Audiology & Speech Pathology 2014 Annual Newsletter