Hartmann E, von Cramon D
J Commun Disord. 1984 Nov;17(6):425-40. doi: 10.1016/0021-9924(84)90004-2.
Speech samples of 14 male and 10 female patients with central dysphonia were examined. Eighteen patients had suffered a severe closed head trauma and the remaining six patients had experienced cerebrovascular accident (CVA). Several parameters were developed in order to find acoustic correlates for three major pathologic voice qualities in central dysphonia. The well know jitter parameter, fundamental period perturbation (PP), was adapted for our purposes and proved to be a good measure for rough voices, though the patients revealed less jitter than in peripheral dysphonia. The vocal onset parameter, time lag of preexhalation (Tb), and the spectral parameter, spectral energy above 5 KHz (A5), classified the breathy voices. Most of the tense voices could be detected by the spectral parameters, spectral energy in the 1-5 KHz range (A1), and variance of spectral energy above 5 KHz (V5). The successful classification of these voice qualities allowed the description of compound pathologic voice types in central dysphonia.
对14名男性和10名女性中枢性发声障碍患者的语音样本进行了检查。其中18名患者曾遭受严重的闭合性颅脑损伤，其余6名患者经历过脑血管意外（CVA）。为了找到中枢性发声障碍中三种主要病理性嗓音质量的声学相关因素，制定了几个参数。著名的抖动参数，即基音周期扰动（PP），经调整以适用于我们的研究目的，结果证明它是衡量粗糙嗓音的一个好指标，不过这些患者的抖动比周围性发声障碍患者要少。发声起始参数，呼气前时间滞后（Tb），以及频谱参数，5kHz以上的频谱能量（A5），对呼吸音进行了分类。大多数紧张嗓音可以通过频谱参数，1-5kHz范围内的频谱能量（A1），以及5kHz以上频谱能量的方差（V5）检测出来。这些嗓音质量的成功分类使得能够描述中枢性发声障碍中的复合病理性嗓音类型。
