Acoustic voice characteristics with and without wearing a facemask.
Acoustic voice characteristics with and without wearing a facemask.
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DOI：
10.1038/s41598-021-85130-8
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发表时间：
2021-03-11
影响因子：
4.6
通讯作者：
Madill C
中科院分区：
文献类型：
--
作者：
Nguyen DD;McCabe P;Thomas D;Purcell A;Doble M;Novakovic D;Chacon A;Madill C
口罩对于医护人员来说至关重要，但佩戴这种个人防护装备时的声音特征尚不清楚。在本研究中，我们比较了 16 名成年人在佩戴和不佩戴外科口罩或 KN95 口罩的情况下执行标准化发声任务的录音中的声学语音测量结果。分析了 0-1 kHz 和 1-8 kHz 区域的平均频谱水平、0-1 和 1-8 kHz 之间的能量比 (LH1000)、谐波噪声比 (HNR)、平滑倒谱峰值突出度 (CPPS) 和声音强度的数据。在连接语音中，1-8 kHz 区域的平均频谱电平显着衰减，而 0-1 kHz 区域的平均频谱电平没有显着变化。在佩戴口罩的条件下，元音的平均频谱水平没有显着变化。当佩戴外科口罩或 KN95 口罩时，连接语音的 LH1000 显着增加，但元音的该测量值没有显着变化。戴口罩条件下的 HNR 高于不戴口罩条件下的 HNR。 CPPS 和声音强度在佩戴面罩的条件下没有变化。这些发现表明，佩戴此类口罩对声谱有衰减影响，其中外科口罩的影响小于 KN95。
Facemasks are essential for healthcare workers but characteristics of the voice whilst wearing this personal protective equipment are not well understood. In the present study, we compared acoustic voice measures in recordings of sixteen adults producing standardised vocal tasks with and without wearing either a surgical mask or a KN95 mask. Data were analysed for mean spectral levels at 0–1 kHz and 1–8 kHz regions, an energy ratio between 0–1 and 1–8 kHz (LH1000), harmonics-to-noise ratio (HNR), smoothed cepstral peak prominence (CPPS), and vocal intensity. In connected speech there was significant attenuation of mean spectral level at 1–8 kHz region and there was no significant change in this measure at 0–1 kHz. Mean spectral levels of vowel did not change significantly in mask-wearing conditions. LH1000 for connected speech significantly increased whilst wearing either a surgical mask or KN95 mask but no significant change in this measure was found for vowel. HNR was higher in the mask-wearing conditions than the no-mask condition. CPPS and vocal intensity did not change in mask-wearing conditions. These findings implied an attenuation effects of wearing these types of masks on the voice spectra with surgical mask showing less impact than the KN95.
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