Hong K H, Kwon S H, Jung S S
Department of Otolaryngology-Head and Neck Surgery, Chonbuk National University Medical School, Chonju, Republic of Korea.
Otolaryngol Head Neck Surg. 1997 Oct;117(4):343-8. doi: 10.1016/S0194-5998(97)70124-4.
With the development of computerized acoustic analysis systems, an objective measure of nasal speech has become readily available by means of a simple, noninvasive technique. In this study, we assessed the nasality in patients with multiple nasal polyposis before and after endoscopic sinus surgery. With the nasometer, we measured nasalance, which reflects the ratio of acoustic energy output of nasal sounds from the nasal and oral cavities, and the slope score of the nasogram curve. The nasalance scores of nasal sentences and the slope scores of the nasogram curves for all nasal consonants were significantly lower in patients with nasal polyposis than in healthy subjects. After surgery, however, the nasalance and slope scores increased significantly to the normal range. On the sound spectrographic analysis, the frequencies of the first nasal formant decreased slightly and the sound intensity increased slightly for all nasal consonants after surgery. However, no significant change was noticed in the frequencies of the second nasal formant. In conclusion, nasometric and sound spectrographic analyses are considered to be useful tools for objectively assessing the extent of nasality in patients with nasal airway obstruction.
随着计算机声学分析系统的发展，通过一种简单的非侵入性技术，已经可以轻松获得鼻音的客观测量方法。在本研究中，我们评估了鼻内镜鼻窦手术前后多发性鼻息肉患者的鼻音情况。使用鼻声计，我们测量了鼻声率，它反映了鼻腔和口腔中鼻音的声能输出比例，以及鼻图曲线的斜率得分。鼻息肉患者的鼻声句子的鼻声率得分和所有鼻辅音的鼻图曲线斜率得分显著低于健康受试者。然而，手术后，鼻声率和斜率得分显著增加至正常范围。在声谱分析中，手术后所有鼻辅音的第一共振峰频率略有下降，声音强度略有增加。然而，第二共振峰频率没有明显变化。总之，鼻声测量和声谱分析被认为是客观评估鼻气道阻塞患者鼻音程度的有用工具。
