UNIFICATION OF PERTURBATION MEASURES IN SPEECH SIGNALS

被引:68
作者
PINTO, NB [1 ]
TITZE, IR [1 ]
机构
[1] UNIV IOWA,DEPT SPEECH PATHOL & AUDIOL,VOICE ACOUST & BIOMECH LAB,IOWA CITY,IA 52242
关键词
D O I
10.1121/1.398803
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Voice perturbation measures, formerly defined in a somewhat ad hoc fashion, are discussed within the framework of signal theory. An attempt is made to unify a variety of existing jittei shimmer, and noise measures on the basis of common underlying perturbation functions and their derivatives. Some simple modulations (sinusoid, Gaussian noise, linear trend) are imposed on cyclic parameters in phonation (e.g., amplitude and fundamental frequency) to test the ability of perturbation measures to detect or reject these types of modulations. It is expected that this systematic approach to perturbation analysis will be helpful in identifying the sources of irregularity in the voice and, thereby, in the detection of laryngeal disorders. © 1990, Acoustical Society of America. All rights reserved.
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页码:1278 / 1289
页数:12
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