Summary: TIME AND FREQUENCY SYNTHESIS PARAMETERS OF SEVERELY
PATHOLOGICAL VOICE QUALITIES
A. Alwan, P. Bangayan, J. Kreiman*, and C. Long**
Department of Electrical Engineering, UCLA
405 Hilgard Ave.
Los Angeles, CA 90024
This paper describes a pilot study into the mechan-
ics of synthesizing severely pathological voices. Suc-
cessful synthesis of such voices may ultimately provide
a quantitative method for evaluating and documenting
voice qualities. An analysis-by-synthesis approach us-
ing the formantsynthesizer KLSYN was used to model
the voices of 24 patients su ering from voice disorders.
Results suggest a number of modi cations to KLSYN
that would facilitate synthesis of these voices.
No standard system of description exists for patholog-
ical voice qualities. Qualities are labeled based on the
perceptual judgments of individual clinicians, a proce-