双耳技术的基本方法

Fundamental Aspects of Binaural Technology

叙述了双耳技术的基本方法，主要讨论了录音点的选取、传输通道的均衡和个人差异对系统性能的影响。录音点可选择外耳道入口至鼓膜之间的任一点，而堵塞的外耳道入口是作为录音点的最佳选择，因为该点的声音信号包含有最少的个人信息。听音实验表明，上述方法实现的双耳系统能较好地重现声音的方位感，听音者聆听个人录音时具有与聆听真实声源时相似的听觉定位能力。

The fundamental aspects of binaural technology are discussed,including the choice of recording points,the equalization of transmission chain and the influence of individual differences on the performance of systems.Recording points for the binaural signals can be any point from the entrance of the ear canal to the eardrum,alternative to the eardrum.The point at the entrance of the blocked ear canal is the most suitable point,since sound at this point includes the minimum amount of individual information.Listening experiments show that the localization performance using these methods is quite encouraging.The listeners have the same localization ability as in real life when listening to the individual recordings．