Aerodynamic profiles of a hemilarynx with a vocal tract
Aerodynamic profiles of a hemilarynx with a vocal tract
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DOI：
10.1177/000348940111000609
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发表时间：
2001-06-01
影响因子：
1.4
通讯作者：
Tayama, N
中科院分区：
文献类型：
--
作者：
Alipour, F;Montequin, D;Tayama, N
压力-流量关系在切除的犬和人的喉部进行了检查，有和没有声道。准备狗和人的喉部，并在中矢状面从顶部到声带以下约10毫米处切开。右半部分被取下并用丙烯酸板代替。声道最初用一个15厘米的塑料管模拟，后来用一个区域功能类似“啊”的声道模型模拟。同时记录不同内收水平的声门压力、平均声门下压力和平均气流。初步数据表明，压力-现在的关系类似于那些完整的喉部，几乎是线性的。声道的增加增加了声门阻力，通过将这些压力流线移动到低流量和高压区域。在实验台上，人的喉部似乎比狗的喉部更容易发声，而且发声阈值压力更低。
The pressure-flow relationship was examined in excised canine and human larynges with and without a vocal tract. Canine and human larynges were prepared and cut in the midsagittal plane from the top to about 10 mm below the vocal folds. The right half was removed and replaced with an acrylic plate. The vocal tract was simulated initially with a 15-cm plastic tube and later with a vocal tract model with an area function resembling "ah." Simultaneous recordings were made of the glottal pressure, mean subglottal pressure, and average airflow at various levels of adduction. preliminary data indicated that the pressure-now relationships were similar to those of a full larynx and were almost linear. The addition of the vocal tract increased the glottal resistance by moving these pressure-flow lines to the lower-flow and higher-pressure region. The human larynx appears to phonate more easily than the canine larynx on the laboratory bench and has lower phonation threshold pressures.