Effects of Torso Location and Rotation to HRTF

IF 1.1 4区工程技术 Q3 ACOUSTICS

Journal of the Audio Engineering Society Pub Date : 2024-07-18 DOI:10.17743/jaes.2022.0152

Jaan Johansson, A. Mäkivirta, Matti Malinen

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引用次数: 0

Abstract

The significance of representing realistic torso orientation relative to the head in the head-related transfer function (HRTF) is studied in this work. Actual head position relative to the torso is found for 195 persons. The effect of the head position in HRTF is studied by modifying the 3D model of a Kemar head-and-torso simulator geometry by translating the head relative to torso in up-down and forward-backward directions and rotating the torso. The spectral difference is compared to that seen in the closest matching actual persons. Forward-backward location of the head has the strongest influence in the HRTF. The spectral difference between the fixed and rotated torso spectra can exceed a 1-dB limit for all sound arrival azimuth directions when the torso rotation exceeds 10°. The spectral difference decreases with increasing source elevation. A subjective listening test with personal HRTF demonstrates that the spectral effect of the torso rotation are audible as a sound color and location changes. The HRTF data in this work is found by calculating the sound field using the boundary element method and the 3D shape of the person acquired using photogrammetry.

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躯干位置和旋转对 HRTF 的影响

这项工作研究了在头部相关传递函数（HRTF）中表示相对于头部的实际躯干方向的意义。研究发现了 195 人的头部相对于躯干的实际位置。通过修改 Kemar 头部和躯干模拟器的三维几何模型，在上下和前后方向上平移头部相对于躯干的位置并旋转躯干，研究了头部位置对 HRTF 的影响。将光谱差异与最接近的真实人物的光谱差异进行比较。头部前后位置对 HRTF 的影响最大。当躯干旋转超过 10° 时，固定躯干和旋转躯干频谱之间的频谱差在所有声音到达方位角方向上都会超过 1 分贝的限制。频谱差随着声源仰角的增加而减小。使用个人 HRTF 进行的主观听力测试表明，随着声音颜色和位置的变化，可以听到躯干旋转的频谱效应。这项工作中的 HRTF 数据是通过使用边界元法计算声场和使用摄影测量法获取人的三维形状而得到的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of the Audio Engineering Society 工程技术-工程：综合

CiteScore

3.50

自引率

14.30%

发文量

审稿时长

1 months

期刊介绍： The Journal of the Audio Engineering Society — the official publication of the AES — is the only peer-reviewed journal devoted exclusively to audio technology. Published 10 times each year, it is available to all AES members and subscribers. The Journal contains state-of-the-art technical papers and engineering reports; feature articles covering timely topics; pre and post reports of AES conventions and other society activities; news from AES sections around the world; Standards and Education Committee work; membership news, patents, new products, and newsworthy developments in the field of audio.