Study of Communication under Noisy Environment.

为了高效和安全的工作，一个人如何用语言交流是很重要的。在本报告中，我们描述了大约4个主题。第一：关于次声。在噪声较大的地方，也存在次声。我们在其他地方报道过内耳作为次声的受体起着重要的作用。声声和次声的联合刺激可影响听器官或孔体状况。这种效应很容易受到个体易感性的影响。第二：关于噪音性听力损失。我们发现，当一个人试图从嘈杂的环境中获取信息时，可能会出现更多的听力损失。第三：关于职业性声音障碍。我们调查了在嘈杂环境下交流的员工的声音障碍，我们测量了噪音强度，分析了声音，并检查了这些员工的声带。最后：关于助听器。我们一直在努力改进助听器，通过减少不愉快的背景噪音来实现舒适的交流。

For the efficient and safe working, it is important how one can communicate by speech. In this report, we describe about 4 topics.1st: about Infrasound.In the noisy places, there also exists infrasound. We have reported elsewhere that inner ear plays an important role an the recepter of infrasound. Combined stimmulation of sound and infrasound may effect hearing organ or hole body condition. This effect was easily influenced by individual susceptibility.2nd: about Noise Induced Hearing Loss.We found possibility of developing more hearing loss when one fried to pick up information from noisy environment.3rd: about Occupational Voice Disorders.We investigated voice disorders for the employee who had communicate under noisy conditions, We measured noise intensity, analysed the voice, and examined the vocal cord of those employee.Finally: about Hearing Aid.We have been trying to improve hearing aid to get comfortable communication by reducing unpleasant background noise.