Article

Extension of the real-time Simulated Open Field Environment for fast binaural and non-isotropic reverberation rendering (vor Ort)

* Presenting author
Day / Time: 22.03.2022, 15:00-15:20
Room: 7-01.
Typ: Vortrag (strukturierte Sitzung)
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Abstract: This presentation discusses the extension of the real-time Simulated Open Field Environment (rtSOFE) with binaural rendering of simulated room impulse responses (BRIR) and rendering of non-isotropic reverberation. rtSOFE implements the image source model to simulate (early) sound reflections such that each visible image source is synthesized in the frequency domain followed by the generation of time-domain impulse responses for convolution with the sound. Real-time BRIR rendering extends this pipeline with efficient frequency-domain multiplication of directional head-related transfer-functions using optimized low-level C++ functions based on CPU SIMD instructions. In a hybrid modelling approach, rtSOFE is extended with a multi-band statistical reverberation model to render non-isotropic diffuse reverberation. Tunable parameters offer the flexibility to fit the model to various room acoustical conditions and we discuss modelling outcomes. The extension of rtSOFE with BRIR and non-isotropic reverberation rendering aims at achieving real-time interactivity and high immersion in VR scenes. Approaches for balancing latency and rendering quality is discussed.
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