Interaural Time Difference Prediction Using Anthropometric Interaural Distance

IF 1.1 4区 工程技术 Q3 ACOUSTICS
Jaan Johansson, A. Mäkivirta, Matti Malinen, Ville Saari
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引用次数: 1

Abstract

This paper studies the feasibility of predicting the interaural time difference (ITD) in azimuth and elevation once the personal anthropometric interaural distance is known, proposing an enhancement for spherical head ITD models to increase their accuracy. The method and enhancement are developed using data in a Head-Related Impulse Response (HRIR) data set comprising photogrammetrically obtained personal 3D geometries for 170 persons and then evaluated using three acoustically measured HRIR data sets containing 119 persons in total. The directions include 360 ◦ in azimuth and –15 ◦ to 60 ◦ in elevation. The prediction error for each data set is described, the proportion of persons under a given error in all studied directions is shown, and the directions in which large errors occur are analyzed. The enhanced spherical head model can predict the ITD such that the first and 99th percentile levels of the ITD prediction error for all persons and in all directions remains below 122 μ s. The anthropometric interaural distance could potentially be measured directly on a person, enabling personalized ITD without measuring the HRIR. The enhanced model can personalize ITD in binaural rendering for headphone reproduction in games and immersive audio applications.
利用人体测量耳际距离预测耳际时差
本文研究了在已知个人人体测量的耳间距离后,预测方位角和仰角的耳间时间差(ITD)的可行性,提出了对球形头部ITD模型的改进,以提高其准确性。该方法和增强是使用头部相关脉冲响应(HRIR)数据集中的数据开发的,该数据集包括170人的摄影获得的个人3D几何形状,然后使用总共包含119人的三个声学测量的HRIR数据集进行评估。方向包括360◦ 方位角和-15◦ 至60◦ 高程。描述了每个数据集的预测误差,显示了在所有研究方向上处于给定误差下的人的比例,并分析了出现大误差的方向。增强型球形头部模型可以预测ITD,使所有人和所有方向的ITD预测误差的第一和第99百分位水平保持在122μs以下。人体测量的耳间距离可以直接在人身上测量,从而实现个性化ITD,而无需测量HRIR。增强型模型可以在双耳渲染中个性化ITD,用于游戏和沉浸式音频应用中的耳机再现。
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
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
53
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.
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