Dejonckere P H, Lebacq J
Institute of Phoniatrics, Universiteit Utrecht, The Netherlands.
ORL J Otorhinolaryngol Relat Spec. 1996 Nov-Dec;58(6):326-32. doi: 10.1159/000276864.
A principal components analysis was performed on a set (10) of acoustic, aerodynamic, perceptual and laryngoscopic data obtained from 87 dysphonic patients. Two principal components were clearly identified: the first represents in some way the glottal air leakage, resulting in turbulent noise, particularly obvious in higher spectral frequencies, and giving the perceptual impression of breathiness; the second accounts rather for the degree of aperiodicity in vocal fold oscillation, reflected in jitter measurements and with a perceptual correlate of harshness or roughness. Morphological changes of vocal folds correlate more closely with this second principal component. Among acoustic parameters, harmonics-to-noise ratio in the formant zone and magnitude of the dominant cepstrum peak seem to integrate to some extent the effects of both principal components.
对从87名发声障碍患者处获得的一组（10个）声学、空气动力学、感知和喉镜检查数据进行了主成分分析。明确识别出两个主成分：第一个在某种程度上代表声门漏气，导致湍流噪声，在较高频谱频率中尤为明显，并给人以呼吸声的感知印象；第二个则反映了声带振动的非周期性程度，体现在抖动测量中，其感知关联为刺耳或粗糙。声带的形态变化与这第二个主成分的相关性更强。在声学参数中，共振峰区域的谐波噪声比和主导谐波峰值的大小似乎在一定程度上整合了两个主成分的影响。
