摘要
头相关传输函数（HRTF）是虚拟听觉重放的核心·目前,HRTF的实验室测量缺乏统一的规范。本文研究了不同测量对HRTF的听觉影响。首先提出了扩散场均衡的预处理方法,并对来自5个不同数据库的KEMAR假人的HRTF数据进行了扩散场均衡;然后,采用谱差异评估了不同数据库HRTF测量的频谱差异;最后,采用HRTF合成的虚拟声信号开展了一系列的主观听音实验,包括定位实验和区分实验·结果表明,扩散场均衡是一种有效的HRTF预处理方法,可以减小不同测量对HRTF频谱的影响;不同测量基本上不影响HRTF在12 kHz以下的定位效果,但对音色的影响较大,从而导致听觉上的可区分.
Head-related transfer functions （HRTFs） are the core of virtual auditory display. However, a standard procedure in HRTF measurements hasn＇t been established. This work investigates the influence of different measuring procedures of HRTF on auditory perception. Firstly, the diffusion-field equalization was proposed as a pre-processing method, and applied to HRTFs of a single dummy head KEMAR from five different databases. Then, the spectral deviations among the HRTFs were calculated. Finally, a series of subjective listening experiments （including localization and discrimination experiments） were conducted. Results indicate the diffusion-field equalization is an effective pre- processing method which can reduce the influence of difference measuring procedures on HRTF＇s magnitude spectra; moreover, the different measuring procedures of HRTFs have little influence on localization below 12 kHz but obvious influence on timbre, which may lead to audible discrimination.
出处
《声学学报》
EI
CSCD
北大核心
2018年第1期83-90,共8页
Acta Acustica
基金
国家自然科学基金项目(11474103)
广东省自然科学基金项目(2014A030313267)资助
