COMPARING RELIABILITY OF PERCEPTUAL RATINGS OF ROUGHNESS AND ACOUSTIC MEASURES OF JITTER

被引:123
作者
RABINOV, CR
KREIMAN, J
GERRATT, BR
BIELAMOWICZ, S
机构
[1] VET ADM MED CTR, 11301 WILSHIRE BLVD, LOS ANGELES, CA 90073 USA
[2] UNIV CALIF LOS ANGELES, SCH MED, DIV HEAD & NECK SURG, LOS ANGELES, CA USA
来源
JOURNAL OF SPEECH AND HEARING RESEARCH | 1995年 / 38卷 / 01期
关键词
PERTURBATION; ACOUSTIC ANALYSIS; PERCEPTION; VOICE QUALITY;
D O I
10.1044/jshr.3801.26
中图分类号
H [语言、文字];
学科分类号
05 ;
摘要
Acoustic analysis is often favored over perceptual evaluation of voice because it is considered objective, and thus reliable. However, recent studies suggest this traditional bias is unwarranted. This study examined the relative reliability of human listeners and automatic systems for measuring perturbation in the evaluation of pathologic voices. Ten experienced listeners rated the roughness of 50 voice samples (ranging from normal to severely disordered) on a 75 mm visual analog scale. Rating reliability within and across listeners was compared to the reliability of jitter measures produced by several voice analysis systems (CSpeech, SoundScope, CSL, and an interactive hand-marking system). Results showed that overall listeners agreed as well or better than ''objective'' algorithms. Further, listeners disagreed in predictable ways, whereas automatic algorithms differed in seemingly random fashions. Finally, listener reliability increased with severity of pathology; objective methods quickly broke down as severity increased. These findings suggest that listeners and analysis packages differ greatly in their measurement characteristics. Acoustic measures may have advantages over perceptual measures for discriminating among essentially normal voices; however, reliability is not a good reason for preferring acoustic measures of perturbation to perceptual measures.
引用
收藏
页码:26 / 32
页数:7
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