Aithal Venkataraja U, Bellur Rajashekhar, John Sunila, Varghese Ciji, Guddattu Vasudeva
Department of Speech and Hearing, Manipal College of Allied Health Sciences, Manipal University, Manipal, India.
Folia Phoniatr Logop. 2012;64(1):48-53. doi: 10.1159/000333255.
Comparison of acoustic parameters of voice between normal and high pitch phonation in normal adults, and comparison between genders.
A total of 48 normal laryngeal speakers were considered for this study. The acoustic parameters were analyzed using the Multi-Dimensional Voice Program. Descriptive statistics were used for analysis of the acoustic parameters across tasks and genders. Paired-samples t tests were used to compare measures between tasks. Independent-samples t tests were used to compare parameters between genders.
Significant differences were found across tasks in the range of fundamental frequency and average fundamental frequency. Females showed a significant difference in the frequency perturbation measures – percent jitter and relative average perturbation, while males demonstrated a significant difference in the noise-to-harmonic ratio. While comparing mean differences between genders, significant differences were observed in fundamental frequency, range of the fundamental frequency, and smoothed pitch perturbation quotient during both phonation tasks.
Comparison of acoustic parameters between normal and high pitch phonation would facilitate understanding the effect of high pitch phonation on voice parameters. Subsequently, this would help clinicians to focus on important acoustic parameters while assessing professional voice users who are at risk of developing voice problems.
比较正常成年人正常发声与高音调发声时的嗓音声学参数，并比较不同性别之间的差异。
本研究共纳入48名喉部正常的发声者。使用多维度嗓音程序分析声学参数。采用描述性统计分析不同任务和性别的声学参数。配对样本t检验用于比较不同任务之间的测量值。独立样本t检验用于比较不同性别之间的参数。
在基频范围和平均基频方面，不同任务之间存在显著差异。女性在频率微扰测量指标——抖动百分比和相对平均微扰方面存在显著差异，而男性在噪声谐波比方面存在显著差异。在比较性别之间的平均差异时，在两种发声任务中，基频、基频范围和平滑基音微扰商均存在显著差异。
比较正常发声与高音调发声时的声学参数将有助于理解高音调发声对嗓音参数的影响。随后，这将有助于临床医生在评估有嗓音问题风险的职业嗓音使用者时关注重要的声学参数。
