Relationships between vocal intensity and noninvasively obtained aerodynamic parameters in normal subjects.
Relationships between vocal intensity and noninvasively obtained aerodynamic parameters in normal subjects.
复制标题
正常受试者声音强度与无创获得的空气动力学参数之间的关系。
DOI：
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发表时间：
1983
影响因子：
2.4
通讯作者：
W. Gould
中科院分区：
文献类型：
--
作者：
S. Tanaka;W. Gould
本文研究了10名正常人的声强（声压级）与肺内压、平均流速和空气动力学的关系。肺内压测量无创性，同时与声压级和平均流速持续发声的元音/a/通过体积描记法和呼吸速度描记法。空气动力学功率计算为肺内压乘以平均流速。正常受试者的平均值表示（声功率）α（肺内压）、（声功率）α（平均流速）和（声功率）α（空气动力学功率），其中呼吸速度描记器开口端的声功率是根据声压级估计的。发声效率被定义为声功率与空气动力功率的比值。在正常受试者中，燃煤效率的个体差异（dB）令人满意地小，并且通过从平均值中简单地添加肺内压和平均流速（dB）的个体差异来确定。这些发现强烈表明，这三个测量值与正常受试者的正常数据的比较，如本研究提供的是有用的，在评估和澄清无效的语音生产的病理喉。
The relationships between vocal intensity (sound pressure level) and intrapulmonic pressure, mean flow rate, and aerodynamic powere were investigated in ten normal subjects. The intrapulmonic pressure was measured noninvasively and simultaneously with sound pressure level and mean flow rate during sustained phonation of the vowel/a/by means of plethysmographic and pneumotachographic methods. The aerodynamic power was calculated as intrapulmonic pressure times mean flow rate. The averaged values for the normal subjects represented (sound power) alpha (intrapulmonic pressure), (sound power) alpha (mean flow rate), and (sound power) alpha (aerodynamic power), where sound power at the open end of the pneumotachograph was estimated from sound pressure level. Vocal efficiency was defined as the ratio of sound power to aerodynamic power. Individual variation of coal efficiency (in dB) was satisfactorily small in the normal subjects, and was determined by the simple addition of individual variations of intrapulmonic pressure and mean flow rate (in dB) from the averaged values. These findings strongly suggested that the comparison of those three measurements against normative data for normal subjects such as provided by this study is useful in evaluating and clarifying the ineffective voice production of the pathological larynx.