摘要
通过分析近场HRTF原函数与最小相位近似函数之间的相关性和相位误差,研究生理结构影响近场HRTF最小相位特性的空间规律。结果表明,近场HRTF最小相位特性整体较好,较差的区域主要是在受声耳异侧与前方之间的区域;最小相位特性随声源距离的变化没有大的差异,只是在局部有所不同。最后,对HRTF最小相位近似进行了心理声学实验,发现最小相位近似引起的相位误差在听觉上是不可辨别的。
Based on the similarity index and the phase error between the measured HRTF set and its minimumphase approximation, the spatial distribution of the impact of the physical structures on the minimum-phase character of the near-field HRTF is discussed. The analysis results show two important characteristics. The first is that the minimum-phase approximation of the near-filed HRTF fits well for most directions except for contralateral and frontal directions. The second is that the spatial distribution does not change significantly with the distance. The psychoacoustic experiments are conducted which confirm that the minimum-phase approximation is an adequate description of the measured HRTF in the near-field.
出处
《电声技术》
2009年第11期51-55,共5页
Audio Engineering
