标题： VR-托勒密：用于空间音频算法感知测试的虚拟环境 显示英文标题

标题： VR-PTOLEMAIC: A Virtual Environment for the Perceptual Testing of Spatial Audio Algorithms

摘要： 感知评估空间音频算法是开发沉浸式音频应用的重要步骤，因为它确保合成的声场在听觉体验、空间感知和听觉真实感方面符合质量标准。 为了支持这些评估，虚拟现实可以提供一个强大的平台，通过提供沉浸式和交互式的测试环境。 在本文中，我们介绍了VR-PTOLEMAIC，这是一个专为评估空间音频算法而设计的虚拟现实评估系统。 该系统将MUSHRA（带隐藏参考和锚点的多刺激测试）评估方法实现到虚拟环境中。 特别是，用户可以位于一个虚拟重建的研讨会房间的25个模拟听音位置中的每一个，并根据实际录制的二阶全向声场脉冲响应对模拟声学响应进行评估，所有这些响应都与各种源信号卷积。 我们通过一项广泛的测试活动评估了所提出框架的可用性，在这项活动中，评估人员被要求比较各种声场重建算法的重建能力。 结果表明，VR平台有效地支持空间音频算法的评估，用户对用户体验和沉浸感普遍给予积极反馈。 显示英文摘要

摘要： The perceptual evaluation of spatial audio algorithms is an important step in the development of immersive audio applications, as it ensures that synthesized sound fields meet quality standards in terms of listening experience, spatial perception and auditory realism. To support these evaluations, virtual reality can offer a powerful platform by providing immersive and interactive testing environments. In this paper, we present VR-PTOLEMAIC, a virtual reality evaluation system designed for assessing spatial audio algorithms. The system implements the MUSHRA (MUlti-Stimulus test with Hidden Reference and Anchor) evaluation methodology into a virtual environment. In particular, users can position themselves in each of the 25 simulated listening positions of a virtually recreated seminar room and evaluate simulated acoustic responses with respect to the actually recorded second-order ambisonic room impulse responses, all convolved with various source signals. We evaluated the usability of the proposed framework through an extensive testing campaign in which assessors were asked to compare the reconstruction capabilities of various sound field reconstruction algorithms. Results show that the VR platform effectively supports the assessment of spatial audio algorithms, with generally positive feedback on user experience and immersivity.