运动声源的双耳录音声像定位效果分析

分析了不同运动方式下双耳录音的声像定位效果，录音采用的声学头模是由中国传媒大学自行研制的，头部尺寸符合中国人的平均生理参数。共录制、评价了三种声源状态下的定位效果：静止、射线运动和横向运动。主观评价实验结果表明运动声源有助于将声像定位在头外，在一定程度上改善了头中定位效应，但声源运动并不能有效地减少声像前后混淆率和上下混淆率。此外，不同的声源运动方式也影响着声像定位的正确率，横向运动比射线运动的声像方向定位正确率高9%。

Spatial Localization Performances of Moving Sound in Binaural Recording

The spatial localization performance with different moving patterns in binaural recording was analyzed. The acoustical dummy head used here was designed by Communication University of China. The size of the dummy head kept meeting the national standards and was in accordance with the average phys-iological parameters of Chinese people. Three kinds of sound sources were recorded and analyzed:station-ary sound,radial-straightline-movement sound and crosswise-straightline-movement sound. The re-sult of subjective listening test showed that the movement of the sound contributes to localize the sound image outside the head and weaken inside-the-head effect to some extent. However,the movement of the sound cannot reduce the front-back confusion and up-down confusion effectively. Besides,different movement styles of sound source will affect the localization accuracy,and the rate of accuracy was 9%higher when sound source moving linearly in crosswise direction than in radial direction.