A Comparison on the Localization Performance of Static and Dynamic Binaural Ambisonics Reproduction with Different Order

IF 0.9 Q4 ACOUSTICS

Sound and Vibration Pub Date : 2019-01-01 DOI:10.32604/sv.2019.04259

Jianliang Jiang, Bo-sun Xie, Haiming Mai

{"title":"A Comparison on the Localization Performance of Static and Dynamic Binaural Ambisonics Reproduction with Different Order","authors":"Jianliang Jiang, Bo-sun Xie, Haiming Mai","doi":"10.32604/sv.2019.04259","DOIUrl":null,"url":null,"abstract":"Ambisonics is a series of spatial sound reproduction system based on spatial harmonics decomposition and each order approximation of sound field. Ambisonics signals are originally intended for loudspeakers reproduction. By using head-related transfer functions (HRTFs) filters, binaural Ambisonics converts the Ambisonics signals for static or dynamic headphone reproduction. In present work, the performances of static and dynamic binaural Ambisonics reproduction are evaluated and compared. The mean binaural pressure errors across target source directions are first analyzed. Then a virtual source localization experiment is conducted, and the localization performances are evaluated by analyzing the percentages of front-back and up-down confusion, the mean angle error and discreteness in the localization results. The results indicate that binaural Ambsonics reproduction with insufficiently high order (for example, 5-10 order) is unable to recreate correct high-frequency magnitude spectra in binaural pressures, resulting in degradation in localization for static reproduction. Because dynamic localization cue is included, dynamic binaural Ambisoncis reproduction yields obviously better localization performance than static reproduction with the same order. Even a 3-order dynamic binaural Ambisoncis reproduction exhibits appropriate localizations performance.","PeriodicalId":49496,"journal":{"name":"Sound and Vibration","volume":"20 1","pages":""},"PeriodicalIF":0.9000,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Sound and Vibration","FirstCategoryId":"1089","ListUrlMain":"https://doi.org/10.32604/sv.2019.04259","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ACOUSTICS","Score":null,"Total":0}

引用次数: 0

Abstract

Ambisonics is a series of spatial sound reproduction system based on spatial harmonics decomposition and each order approximation of sound field. Ambisonics signals are originally intended for loudspeakers reproduction. By using head-related transfer functions (HRTFs) filters, binaural Ambisonics converts the Ambisonics signals for static or dynamic headphone reproduction. In present work, the performances of static and dynamic binaural Ambisonics reproduction are evaluated and compared. The mean binaural pressure errors across target source directions are first analyzed. Then a virtual source localization experiment is conducted, and the localization performances are evaluated by analyzing the percentages of front-back and up-down confusion, the mean angle error and discreteness in the localization results. The results indicate that binaural Ambsonics reproduction with insufficiently high order (for example, 5-10 order) is unable to recreate correct high-frequency magnitude spectra in binaural pressures, resulting in degradation in localization for static reproduction. Because dynamic localization cue is included, dynamic binaural Ambisoncis reproduction yields obviously better localization performance than static reproduction with the same order. Even a 3-order dynamic binaural Ambisoncis reproduction exhibits appropriate localizations performance.

查看原文本刊更多论文

静态与动态不同阶次双耳混响的定位性能比较

双声系统是一系列基于空间谐波分解和声场各阶近似的空间声音再现系统。立体声信号最初用于扬声器的再现。通过使用头部相关传递函数(hrtf)滤波器，双耳立体声将立体声信号转换为静态或动态耳机再现。本文对静态和动态双耳立体声再现的性能进行了评价和比较。首先分析了目标声源方向上的平均双耳压力误差。然后进行了虚拟源定位实验，通过分析定位结果中前后、上下混淆的百分比、平均角度误差和离散度对定位性能进行了评价。结果表明，在双耳压力条件下，高阶(如5-10阶)的双耳双声再现无法再现正确的高频数量级谱，导致静态再现的定位性能下降。因为动态定位提示包含动态双耳Ambisoncis繁殖产量定位性能明显优于静态复制相同的顺序。即使是3-order动态双耳Ambisoncis繁殖具有适当的本地化的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Sound and Vibration 物理-工程：机械

CiteScore

1.50

自引率

33.30%

发文量

审稿时长

>12 weeks

期刊介绍： Sound & Vibration is a journal intended for individuals with broad-based interests in noise and vibration, dynamic measurements, structural analysis, computer-aided engineering, machinery reliability, and dynamic testing. The journal strives to publish referred papers reflecting the interests of research and practical engineering on any aspects of sound and vibration. Of particular interest are papers that report analytical, numerical and experimental methods of more relevance to practical applications. Papers are sought that contribute to the following general topics: -broad-based interests in noise and vibration- dynamic measurements- structural analysis- computer-aided engineering- machinery reliability- dynamic testing