Can auralization of a highly directional source in a room succeed if it employs a room impulse response (RIR) measurement or simulation relying on a first-order directional source, only? This contribution presents model and evaluation of a source-and-receiver-directional Ambisonics RIR capture and processing approach (SRD ARIR) based on a small set of responses from a first-order source to a first-order receiver. To enhance the directional resolution, we extend the Ambisonic spatial decomposition method (ASDM) to upscale the first-order resolution of both source and receiver to higher orders. To evaluate the method, a listening experiment was conducted based on first-order SRD-ARIR measurements, into which the higher-order directivity of icosahedral loudspeaker’s (IKO) was inserted as directional source of well-studied perceptual effects. The results show how the proposed method performs and compares to alternative rendering methods based on measurements taken in the same acoustic environment, e.g., multiple-orientation binaural room impulse responses (MOBRIRs) from the physical IKO to the KU-100 dummy head, or higher-order SRD ARIRs from IKO to em32 Eigenmike. For optimal externalization, our experiments exploit the benefits of virtual reality, using a highly realistic visualization on head-mounted-display, and a user interface to report localization by placing interactive visual objects in the virtual space.

中文翻译：

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来自一阶 RIR 测量的高阶定向源的可听化

如果使用房间脉冲响应 (RIR) 测量或仅依赖一阶定向源的模拟，房间中高度定向源的可听化能否成功？此贡献基于从一阶源到一阶接收器的一小组响应，提出了源和接收器定向 Ambisonics RIR 捕获和处理方法 (SRD ARIR) 的模型和评估。为了提高方向分辨率，我们扩展了环绕声空间分解方法 (ASDM) 以将源和接收器的一阶分辨率提升到更高的阶。为了评估该方法，基于一阶 SRD-ARIR 测量进行了聆听实验，其中插入了二十面体扬声器 (IKO) 的高阶方向性作为经过充分研究的感知效果的方向源。结果显示了所提出的方法如何执行并与基于在相同声学环境中进行的测量的替代渲染方法进行比较，例如，从物理 IKO 到 KU-100 假人头或更高级别的多方位双耳房间脉冲响应 (MOBRIR) - 从 IKO 到 em32 Eigenmike 订购 SRD ARIR。为了实现最佳外化，我们的实验利用了虚拟现实的好处，在头戴式显示器上使用高度逼真的可视化，以及通过在虚拟空间中放置交互式视觉对象来报告定位的用户界面。或从 IKO 到 em32 Eigenmike 的高阶 SRD ARIR。为了实现最佳外化，我们的实验利用了虚拟现实的好处，在头戴式显示器上使用高度逼真的可视化，以及通过在虚拟空间中放置交互式视觉对象来报告定位的用户界面。或从 IKO 到 em32 Eigenmike 的高阶 SRD ARIR。为了实现最佳外化，我们的实验利用了虚拟现实的好处，在头戴式显示器上使用高度逼真的可视化，以及通过在虚拟空间中放置交互式视觉对象来报告定位的用户界面。