de Souza Arieli Jaques, Gonçalves Daniela da Silva, Bastilha Gabriele Rodrigues, Christmann Mara Keli, Scapini Fabrício, Cielo Carla Aparecida
Department of Speech-Language Pathology and Audiology, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil.
Department of Speech-Language Pathology and Audiology, Universidade Federal de Santa Maria/UFSM, Santa Maria, Rio Grande do Sul, Brazil.
J Voice. 2020 Nov;34(6):838-846. doi: 10.1016/j.jvoice.2019.05.009. Epub 2019 Jun 4.
To verify the acoustic measurements of glottic source of dysphonic teachers of a medium-sized municipality of interior of the state.
Retrospective, cross-sectional, and quantitative study, with a composite sample of 34 dysphonic teachers, of which 21 teachers without laryngeal affections and 13 with laryngeal affections, mean age 39.1 years old and 39.5 years old, respectively. Glottic source acoustic analysis was performed with the Multi-Dimensional Voice Program Advanced. The data were analyzed statistically to verify the significance of each acoustic measure between the groups (with laryngeal affection, without laryngeal affection, and total) and in relation to the normality proposed by the software.
In the three conditions (groups with and without affection and total) the means were statistically below normality in the measurements of maximum and minimum fundamental frequency. In the group without affection, frequency, and noise measurements presented above normality. In both groups, measurements of frequency, noise, and subharmonic segments were above normal, and number of voice breaks below normal.
Acoustic parameters outside the normal pattern showed an aperiodic vocal production, with presence of noise and instability in the vocal signal, in dysphonic teachers with or without alteration at the laryngeal level.
验证该州内陆一个中等规模城市中嗓音障碍教师声门源的声学测量结果。
采用回顾性、横断面定量研究，以34名嗓音障碍教师为复合样本，其中21名无喉部病变教师和13名有喉部病变教师，平均年龄分别为39.1岁和39.5岁。使用多维语音程序高级版进行声门源声学分析。对数据进行统计学分析，以验证各组（有喉部病变、无喉部病变及总体）之间各项声学测量指标的显著性，以及与软件所提出的正常标准的关系。
在三种情况下（有病变组、无病变组及总体），最大和最小基频测量的均值在统计学上均低于正常标准。在无病变组中，频率和噪声测量结果高于正常标准。在两组中，频率、噪声和次谐波段的测量结果均高于正常标准，而声门中断次数低于正常标准。
正常模式以外的声学参数显示出非周期性的发声，在有或无喉部病变的嗓音障碍教师中，存在噪声和嗓音信号不稳定的情况。
