基于多视角双声室脉冲响应的听觉化

IF 1 3区 物理与天体物理 Q4 ACOUSTICS Acta Acustica Pub Date : 2023-12-05 DOI:10.1051/aacus/2020024
K. Müller, F. Zotter
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引用次数: 19

摘要

大多数情况下,虚拟声学渲染采用实时更新的房间声学模拟来实现不同听众视角的听觉化。作为替代方案,我们提出并测试了一种插值房间脉冲响应的技术,特别是在空间分布的接收器视角网格中可用的双声房间脉冲响应(ARIRs),并在所需的声学环境中进行测量或模拟。特别是,我们将相邻arir的三元组外推到变量侦听器透视图,然后再进行线性内插。外推是通过将每个ARIR分解为局部声音事件,并根据听众的视角重新分配其方向、时间和级别,以及尽可能多的时间、方向和视角上下文来实现的。我们建议在两个层面上进行这种分解:基于在ARIR三联体或所有观察到直接声音的ARIR中观察到的到达时间差,将早期ARIR中的峰值分解为联合局部声事件。无法联合定位的声音事件被视为残差,残差的定位利用到达方向检测和估计到达时间。在静态和时变条件下,利用实测和模拟的ARIR数据集,在听力实验中对所提出的插值渲染方法进行了评估,找到了合适的参数设置。
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Auralization based on multi-perspective ambisonic room impulse responses
Most often, virtual acoustic rendering employs real-time updated room acoustic simulations to accomplish auralization for a variable listener perspective. As an alternative, we propose and test a technique to interpolate room impulse responses, specifically Ambisonic room impulse responses (ARIRs) available at a grid of spatially distributed receiver perspectives, measured or simulated in a desired acoustic environment. In particular, we extrapolate a triplet of neighboring ARIRs to the variable listener perspective, preceding their linear interpolation. The extrapolation is achieved by decomposing each ARIR into localized sound events and re-assigning their direction, time, and level to what could be observed at the listener perspective, with as much temporal, directional, and perspective context as possible. We propose to undertake this decomposition in two levels: Peaks in the early ARIRs are decomposed into jointly localized sound events, based on time differences of arrival observed in either an ARIR triplet, or all ARIRs observing the direct sound. Sound events that could not be jointly localized are treated as residuals whose less precise localization utilizes direction-of-arrival detection and the estimated time of arrival. For the interpolated rendering, suitable parameter settings are found by evaluating the proposed method in a listening experiment, using both measured and simulated ARIR data sets, under static and time-varying conditions.
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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.
期刊最新文献
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