STUDIES IN PATHOLOGICAL SPEECH PRODUCTION.
Abstract
This research was directed toward the correlation of minute variations in the pitch periodicity of human speech (pitch perturbations) with several types of physical lesion of the larynx. A sample of 144 laryngeal patients and 35 normal controls, all of whom spoke English, were recorded in acoustically treated rooms on high fidelity apparatus in order to collect large samples of pitch periods from which pitch perturbations were measured. An involved medical diagnosis, including post-operative biopsies when required was achieved for each patient in order to determine the type, size, and location of his laryngeal defect. Significant relationships were found between selected pitch perturbation factors (PF) and the following pathological conditions: (1) cancer (CA) of the vocal cords; (2) polyps on or near the vocal cords; and (3) acute and chronic laryngitis. The results of this study support the hypothesis that certain types of laryngeal lesion can be identified by spectral analysis of recorded speech samples.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1964
- Accession Number
- AD0610103
Entities
People
- Philip Lieberman
- William R. Smith
Organizations
- Northeastern University