Examining the interrelation behavior of distance metrics for head-related transfer function evaluation: a case study

IF 1 3区 物理与天体物理 Q4 ACOUSTICS Acta Acustica Pub Date : 2023-01-01 DOI:10.1051/aacus/2023028
S. Doma, N. Brožová, J. Fels
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Abstract

The comparison of head-related transfer functions (HRTFs), e.g., for validating different acquisition methods, requires a meaningful way of quantifying HRTF differences – a problem to which literature offers no standardized approach. This impedes the comparability and interpretability of studies. The present work therefore addresses the lack of proper understanding of the behavior of commonly used distance metrics by applying seven metrics to individually measured and approximated HRTF datasets. Covering a variety of spectral deviations, we perform both intra-individual comparisons (contrasting different levels of spectral detail for the same individual) and inter-individual comparisons (assessing metric reactions to non-individual cue differences). The metrics exhibit selective reactions to distinct spectral alterations. Particularly, the results demonstrate that spectrally localized errors go undetected by five out of seven metrics. Further analysis emphasizes inconsistencies in metric correlation patterns. These observations highlight the need for a multi-dimensional metric, capturing various types of HRTF differences for a proper assessment of errors.
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检查与头部相关的传递函数评价的距离度量的相互关系行为:一个案例研究
头部相关传递函数(HRTF)的比较,例如,为了验证不同的获取方法,需要一种有意义的方法来量化HRTF差异——这是一个文献没有提供标准化方法的问题。这阻碍了研究的可比性和可解释性。因此,目前的工作通过将七个度量应用于单独测量和近似的HRTF数据集,解决了对常用距离度量行为缺乏适当理解的问题。涵盖各种光谱偏差,我们进行了个体内比较(对比同一个体的不同光谱细节水平)和个体间比较(评估对非个体线索差异的度量反应)。这些指标对不同的光谱变化表现出选择性反应。特别是,结果表明光谱局部误差在7个度量中有5个没有被检测到。进一步的分析强调了度量相关模式的不一致性。这些观察结果突出了多维度量的必要性,捕获各种类型的HRTF差异,以便正确评估误差。
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来源期刊
Acta Acustica
Acta Acustica ACOUSTICS-
CiteScore
2.80
自引率
21.40%
发文量
0
审稿时长
12 weeks
期刊介绍: Acta Acustica, the Journal of the European Acoustics Association (EAA). After the publication of its Journal Acta Acustica from 1993 to 1995, the EAA published Acta Acustica united with Acustica from 1996 to 2019. From 2020, the EAA decided to publish a journal in full Open Access. See Article Processing charges. Acta Acustica reports on original scientific research in acoustics and on engineering applications. The journal considers review papers, scientific papers, technical and applied papers, short communications, letters to the editor. From time to time, special issues and review articles are also published. For book reviews or doctoral thesis abstracts, please contact the Editor in Chief.
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