Fourth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2005)

Florence, Italy
October 29-31, 2005

Clinical Voice Measurement Using EGG/Lx Signals

Adrian Fourcin (1,2)

(1) Department of Phonetics & Linguistics, University College London, UK
(2) Laryngograph Ltd., UK

Nearly fifty years ago, Philippe Fabre initiated a method for the non-invasive electrical measurement of vocal fold vibration that is now known generically as “electro-glottography” — EGG. The name has arisen from the initial misinterpretation of the waveform, but the technique itself has now come into widespread daily use in the voice clinic, although for vocal fold contact rather than glottal opening measurements. The present extremely brief discussion is concerned with three particular aspects of the ways in which the approach can be usefully linked to basic aspects of voice perception and production — the psychophonetic use of the data in the measurement of sustained vowels and connected speech production; the use of these criteria in “pitch” based quantitative assessments; and the application of the technique in vocal fold closed phase duration appraisal. Particular attention is given to pathological voice analysis.

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Fourcin, Adrian (2005): "Clinical voice measurement using EGG/lx signals", In MAVEBA-2005, 111-114.