A round robin on room acoustical simulation and auralization

Brinkmann, Fabian; Aspöck, Lukas; Airehrour, David; Lepa, Steffen; Vorländer, Michael; Weinzierl, Stefan

doi:10.1121/1.5096178

Cited by 79 publications

(57 citation statements)

References 27 publications

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“…Previous studies regarding the realism of binaural (i.e., rendered via headphones) auralizations have mainly focused on comparing auralizations based on simulated sound fields to those based on measured sound fields, see e.g. [6][7][8][9][10]. The latent (and sometimes explicitly formulated) assumption underlying the cited studies is that measurements represent the "reality" and that simulations could also represent the reality if they were indistinguishable from measurements in the direct comparison.…”

Section: Introductionmentioning

confidence: 99%

Toward realistic binaural auralizations – perceptual comparison between measurement and simulation-based auralizations and the real room for a classroom scenario

et al. 2021

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In order to make full use of their potential to replace experiments in real rooms, auralizations must be as realistic as possible. Recently, it has been shown that for speech, head-tracked binaural auralizations based on measured binaural room impulse responses (BRIRs) can be so realistic, that they become indistinguishable (or nearly so) from the real room [1, 2]. In the present contribution, perceptual comparisons between the auralized and the real room are reported for auralizations based both on measured and simulated BRIRs. In the experiment, subjects sitting in the real room rated the agreement between the real and the auralized room with respect to a number of attributes. The results indicate that for most attributes, the agreement between the auralized and the real room can be very convincing (better than 7.5 on a nine-point scale). This was not only observed for auralizations based on measured BRIRs, but also for those based on simulated BRIRs. In the scenario considered here, the use of individual head-related impulse responses (HRIRs) does not seem to offer any benefit over using HRIRs from a head-and-torso-simulator.

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Section: Introductionmentioning

confidence: 99%

Toward realistic binaural auralizations – perceptual comparison between measurement and simulation-based auralizations and the real room for a classroom scenario

et al. 2021

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“…This is important since an evaluation of current acoustic modeling algorithms showed that they can generate plausible but not entirely authentic simulations, i.e. human observers could distinguish simulations from recordings (Brinkmann et al, 2019). Nevertheless, our study shows that the cognitive effects of acoustic inventions can be successfully obtained in VR, as highlighted by earlier work that successfully measured the cognitive effects of simulated acoustic insulation (Muhammad et al, 2019).…”

Section: Discussionmentioning

confidence: 58%

Using Virtual Reality to Evaluate the Impact of Room Acoustics on Cognitive Performance and Well-Being

Doggett

Sander

Birt

et al. 2021

Front. Virtual Real.

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Irrelevant ambient noise can have profound effects on human performance and wellbeing. Acoustic interventions (e.g., installation of sound absorbing materials) that reduce intelligible noise (i.e., sound unrelated to the relevant speech, including noise from other talkers within the space) by reducing room reverberation, have been found to be an effective means to alleviate the negative effects of noise on cognitive performance. However, these interventions are expensive, and it is difficult to evaluate their impact in the field. Virtual reality (VR) provides a promising simulation platform to evaluate the likely impact of varied acoustic interventions before they are chosen and installed. This study employed a virtual classroom environment to evaluate whether an intervention to reduce reverberation can be simulated successfully in VR and mitigate the effects of ambient noise on cognitive performance, physiological stress, and mood. The repeated-measures experimental design consisted of three acoustic conditions: no ambient noise, typical open-plan classroom ambient noise without acoustic treatment, and the same ambient noise with acoustic treatment to reduce reverberation. Results revealed that ambient noise negatively affected participants’ cognitive performance but had no measurable effect on physiological stress or self-reported mood. Importantly, the negative effect of ambient noise was completely ameliorated by the acoustic treatment (i.e. indistinguishable from performance in the no noise condition). The study shows that VR provides an effective and efficient means to evaluate the cognitive effects of acoustic interventions.

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“…Therefore, absence of diffraction does not prohibit plausible rendering in room acoustics. Rather, it is desired to boost accuracy [BAA*19]. With these practical considerations, ray‐tracing methods that start with a diffraction‐less geometric approximation are standard in room acoustics [Vor07].…”

Section: Introductionmentioning

confidence: 99%

Interactive sound propagation for dynamic scenes using 2D wave simulation

Rosen

Godin

Raghuvanshi

2020

Computer Graphics Forum

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We present a technique to model wave‐based sound propagation to complement visual animation in fully dynamic scenes. We employ 2D wave simulation that captures geometry‐based diffraction effects such as obstruction, reverberation, and directivity of perceptually‐salient initial sound at the source and listener. We show real‐time performance on a single CPU core on modestly‐sized scenes that are nevertheless topologically complex. Our key ideas are to exploit reciprocity and use a perceptual encoding and rendering framework. These allow the use of low‐frequency finite‐difference simulations on static scene snapshots. Our results show plausible audio variation that remains robust to motion and geometry changes. We suggest that wave solvers can be a practical approach to real‐time dynamic acoustics. We share the complete C++ code of our “Planeverb” system.

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A round robin on room acoustical simulation and auralization

Cited by 79 publications

References 27 publications

Toward realistic binaural auralizations – perceptual comparison between measurement and simulation-based auralizations and the real room for a classroom scenario

Toward realistic binaural auralizations – perceptual comparison between measurement and simulation-based auralizations and the real room for a classroom scenario

Using Virtual Reality to Evaluate the Impact of Room Acoustics on Cognitive Performance and Well-Being

Interactive sound propagation for dynamic scenes using 2D wave simulation

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