Deliyski Dimitar D, Shaw Heather S, Evans Maegan K
Department of Communication Sciences and Disorders, University of South Carolina, Columbia, 20908, USA.
J Voice. 2005 Mar;19(1):15-28. doi: 10.1016/j.jvoice.2004.07.003.
An accurate analysis of voice quality is imperative when using acoustic measurements to diagnose vocal pathologies. It is known that noise has a significant effect on the reliability and validity of acoustic voice measurements, but the precise relationship has not been established. The purpose of this study was to investigate the influence of noise on the accuracy, reliability, and validity of acoustic voice quality measurements while balancing for gender, age, intersubject and intrasubject variability, microphones, computer hardware, analysis software, and type of noise. Level of noise was precisely controlled. The specific focus of interest was to determine the critical levels of noise that can invalidate voice quality measurements and to generate practical recommendations. Results suggest that the recommended, acceptable, and unacceptable levels of noise in the acoustic environment are above 42 dB, above 30 dB, and below 30 dB signal-to-noise ratio, respectively.
在使用声学测量来诊断嗓音疾病时，准确分析嗓音质量至关重要。众所周知，噪声对声学嗓音测量的可靠性和有效性有重大影响，但具体关系尚未明确。本研究的目的是在平衡性别、年龄、受试者间和受试者内变异性、麦克风、计算机硬件、分析软件以及噪声类型的同时，研究噪声对声学嗓音质量测量的准确性、可靠性和有效性的影响。精确控制了噪声水平。具体关注的是确定可能使嗓音质量测量无效的临界噪声水平，并给出实用建议。结果表明，声学环境中推荐的、可接受的和不可接受的噪声水平分别为信噪比高于42 dB、高于30 dB和低于30 dB。
