Gao Shaohua, Ma Estella P-M
Voice Research Laboratory, Faculty of Education, The University of Hong Kong, Pok Fu Lam, Hong Kong.
Voice Research Laboratory, Faculty of Education, The University of Hong Kong, Pok Fu Lam, Hong Kong.
J Voice. 2024 May 15. doi: 10.1016/j.jvoice.2024.04.013.
To synthesize existing evidence of the relationship between voice parameters and speech intelligibility.
Following Preferred Reporting Items for Systematic Reviews and Meta-Analysis extension for Scoping Review (PRISMA-ScR) guidelines, 13 databases were searched and a manual search was conducted. A narrative synthesis of methodological quality, study characteristics, participant demographics, voice parameter categorization, and their relationship to speech intelligibility was conducted. A Grading of Recommendations Assessment, Development, and Evaluation (GRADE) assessment was also performed.
A total of 5593 studies were retrieved, and 30 eligible studies were included in the final scoping review. The studies were given scores of 10-25 (average 16.93) out of 34 in the methodological quality assessment. Research that analyzed voice parameters related to speech intelligibility, encompassing perceptual, acoustic, and aerodynamic parameters, was included. Validated and nonvalidated perceptual voice assessments showed divergent results regarding the relationship between perceptual parameters and speech intelligibility. The relationship between acoustic parameters and speech intelligibility was found to be complex and the results were inconsistent. The limited research on aerodynamic parameters did not reach a consensus on their relationship with speech intelligibility. Studies in which listeners were not speech-language pathologists (SLPs) far outnumbered those with SLP listeners, and research conducted in English contexts significantly exceeded that in non-English contexts. The GRADE evaluation indicated that the quality of evidence varied from low to moderate.
The results for the relationship between voice parameters and intelligibility showed significant heterogeneity. Future research should consider age-related voice changes and include diverse age groups. To enhance validity and comparability, it will be necessary to report effect sizes, tool validity, inter-rater reliability, and calibration procedures. Voice assessments should account for the validation status of tools because of their potential impact on the outcomes. The linguistic context may also influence the results.
综合语音参数与言语可懂度之间关系的现有证据。
遵循系统评价和Meta分析扩展版的范围综述优先报告项目（PRISMA-ScR）指南，检索了13个数据库并进行了手动检索。对方法学质量、研究特征、参与者人口统计学、语音参数分类及其与言语可懂度的关系进行了叙述性综合分析。还进行了推荐分级评估、制定和评价（GRADE）评估。
共检索到5593项研究，最终范围综述纳入了30项符合条件的研究。在方法学质量评估中，这些研究在34分中得分为10 - 25分（平均16.93分）。纳入了分析与言语可懂度相关的语音参数的研究，包括感知、声学和空气动力学参数。经过验证和未经验证的感知语音评估在感知参数与言语可懂度之间的关系上显示出不同的结果。发现声学参数与言语可懂度之间的关系复杂且结果不一致。关于空气动力学参数的有限研究在其与言语可懂度的关系上未达成共识。听众不是言语语言病理学家（SLP）的研究远远多于有SLP听众的研究，并且在英语环境中进行的研究显著超过非英语环境中的研究。GRADE评估表明证据质量从低到中等不等。
语音参数与可懂度之间关系的结果显示出显著的异质性。未来的研究应考虑与年龄相关的语音变化并纳入不同年龄组。为了提高有效性和可比性，有必要报告效应大小、工具有效性、评分者间信度和校准程序。由于语音评估工具的潜在影响，语音评估应考虑工具的验证状态。语言背景也可能影响结果。
