摘要
高密度头相关传输函数测量对声源空间方位的精度有更高要求,因此要有精度较高的声源定位装置(系统),并对定位系统的误差进行校准。使用FASTRAK电磁追踪器对测量高密度HRTF的定位系统进行误差校准。FASTRAK的空间分辨率为0.01°,静态精度为0.15°,经定位系统精度校准后,声源方位角误差可控制在0.1°±0.15°的范围内。文中测量高密度HRTF数据库的最小方位角间隔为2.5°,上述误差基本满足测量要求。
The measurement of head-related transfer function（HRTF） with high directional density requests high precision in sound source position.A sound source orientated system with high accuracy and corresponding error correction procedure are needed.In this paper,a FASTRAK electromagnetic pursue tracer is used to calibrate the error of high precision HRTF measurement orientated system.The spatial resolution of FASTRAK can arrive at 0.01°,and static state precision is 0.15°.After calibrating the directional precision,the error of sound source azimuth is controled within 0.1°±0.15°.The minimal azimuth interval of HRTF to be measured in the work is 2.5°,so that the directional accuracy of the designed system meets the requirement of the measurement.
出处
《电声技术》
2010年第12期45-47,共3页
Audio Engineering
基金
国家自然科学基金项目(10774049)
华南理工大学自然科学基金项目(x21xe5090450)
