Analysis on the spatial symmetry of head-related transfer function

作者：Zhong, Xiaoli; Xie, Bosun

来源：Acta Acustica, 2007, 32(2): 129-136.

• Anatomical structure
• Binaural model
• Front back symmetry
• Head related transfer function
• Starting frequency

Methods for analyzing the spatial symmetry of head-related transfer HRTF) are proposed. The influences of anatomical structures on the symmetry of HRTF are investigated using HRTFs measured on KEMAR mannequin and human subjects. Results show that for KEMAR mannequin, pinnae destroy the front-back symmetry of HRTF above 5-6 kHz, while for human subjects it reduces to 2.5 kHz because of the locations of ears. Furthermore, at low and median frequencies, HRTF is approximately left-right symmetrical. While as frequencies increase, the asymmetry caused by the fine anatomical left-right differences appears. The starting frequency and the extent of the left-right asymmetry in HRTF depend on individuals. The analyses can demonstrate the spatial symmetrical characteristics of HRTF, and the frequency ranges in which current binaural models are valid.

• 出版日期2007-3
• 单位华南理工大学