Simulating cartilage conduction sound to estimate the sound pressure level in the external auditory canal
Simulating cartilage conduction sound to estimate the sound pressure level in the external auditory canal
复制标题
DOI：
10.1016/j.jsv.2014.09.021
复制
发表时间：
2015-01-20
影响因子：
4.7
通讯作者：
Yamanaka, Toshiaki
中科院分区：
文献类型：
--
作者：
Shimokura, Ryota;Hosoi, Hiroshi;Yamanaka, Toshiaki
当耳软骨振动时，它产生的声音直接进入外耳道，可以清楚地听到。虽然软骨传导的概念可以应用于各种语音通信和音乐工业设备（例如智能手机，音乐播放器和助听器），但由于校准方法与目前用于空气和骨传导的方法不同，因此尚未定义此类设备的传导性能。因此，本研究的目的是模拟软骨传导声（CCS）使用头部和躯干模拟器（HATS）和耳软骨模型（聚氨酯树脂管），并与实验结果进行比较。使用HATS，我们发现在2kHz以上的频率下的模拟CCS对应于来自七个受试者的平均测量CCS。使用颅骨和耳软骨的模型，我们发现，在低于1.5 kHz的频率下，模拟CCS与测量CCS一致。因此，这两种方法的组合可以用于以高精度估计CCS。(C)2014爱思唯尔有限公司版权所有。
When the aural cartilage is made to vibrate it generates sound directly into the external auditory canal which can be clearly heard. Although the concept of cartilage conduction can be applied to various speech communication and music industrial devices (e.g. smartphones, music players and hearing aids), the conductive performance of such devices has not yet been defined because the calibration methods are different from those currently used for air and bone conduction. Thus, the aim of this study was to simulate the cartilage conduction sound (CCS) using a head and torso simulator (HATS) and a model of aural cartilage (polyurethane resin pipe) and compare the results with experimental ones. Using the HATS, we found the simulated CCS at frequencies above 2 kHz corresponded to the average measured CCS from seven subjects. Using a model of skull bone and aural cartilage, we found that the simulated CCS at frequencies lower than 1.5 kHz agreed with the measured CCS. Therefore, a combination of these two methods can be used to estimate the CCS with high accuracy. (C) 2014 Elsevier Ltd. All rights reserved.