Second International Conference on Spoken Language Processing (ICSLP'92)

Banff, Alberta, Canada
October 13-16, 1992

A Microcomputer-Based System for Real-Time Analysis and Display of Laryngograph Signals

S. Eady, B. Craig Dickson, Roy C. Snell, J. Woolsey, P. Ollek, A. Wynrib, J. Clayards

Speech Technology Research Ltd., Victoria, B.C., Canada

This paper describes a microcomputer-based system that is being developed to analyze and display laryngograph signals for clinical applications. The system uses commercially-available hardware to digitize and analyze laryngograph signals. After digitization, the signal is smoothed using a moving-average technique, in order to remove float caused by vertical movement of the larynx during phonation. Digital-signal-processing techniques are then used to analyze and display laryngeal parameters including pitch, open quotient, jitter and periodicity index (as measured by cepstral amplitude). The system provides real-time analysis and display for some of the above parameters, and long-term averaging and statistical analysis for others. The system is designed for use by speech clinicians, and it is being tested with normal and pathological voices.

Full Paper

Bibliographic reference.  Eady, S. / Dickson, B. Craig / Snell, Roy C. / Woolsey, J. / Ollek, P. / Wynrib, A. / Clayards, J. (1992): "A microcomputer-based system for real-time analysis and display of laryngograph signals", In ICSLP-1992, 1601-1604.