Simulation of the transient and steady-state sound propagation in rooms using a new combined ray-tracing/image-source algorithm

Vorländer, Michael

doi:10.1121/1.398336

Cited by 218 publications

(134 citation statements)

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“…At low frequencies (i.e., below the Schroeder frequency [19]), modal behavior dominates, leading to monaural timbral effects. As frequency increases, reflections are often thought of (and modeled) as sound rays following the principles of geometrical acoustics [20]. Fig.…”

Section: Room Model and Perceptionmentioning

confidence: 99%

Object-Based Reverberation for Spatial Audio

Coleman¹,

Franck²,

Jackson³

et al. 2017

J. Audio Eng. Soc.

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Object-based audio is gaining momentum as a means for future audio content to be more immersive, interactive, and accessible. Recent standardization developments make recommendations for object formats; however, the capture, production, and reproduction of reverberation is an open issue. In this paper parametric approaches for capturing, representing, editing, and rendering reverberation over a 3D spatial audio system are reviewed. A framework is proposed for a Reverberant Spatial Audio Object (RSAO), which synthesizes reverberation inside an audio object renderer. An implementation example of an object scheme utilizing the RSAO framework is provided, and supported with listening test results, showing that: the approach correctly retains the sense of room size compared to a convolved reference; editing RSAO parameters can alter the perceived room size and source distance; and, format-agnostic rendering can be exploited to alter listener envelopment.

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Section: Room Model and Perceptionmentioning

confidence: 99%

Object-Based Reverberation for Spatial Audio

Coleman¹,

Franck²,

Jackson³

et al. 2017

J. Audio Eng. Soc.

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“…Faktor-faktor yang mengatur integrasi dari stimulus-stimulus ini, terutama yang bertujuan untuk meningkatkan kognisi manusia, dapat ditemukan pada referensi [1]. Selain itu, juga terdapat efek fisiologis dan psikologis dari berbagai jenis bunyi yang umumnya digunakan di dalam computer gaming [2].Simulasi yang menghasilkan respons impuls ruang dan auralisasi menggunakan perangkat lunak berbasis prinsip geometri akustik ruang (geometrical room acoustics) telah digunakan secara luas sebagai suatu teknik untuk menghasilkan lingkungan akustik virtual [3]. Teknik yang sering dikenal dengan auralisasi ini telah berkembang hingga mampu menyediakan data auralisasi secara real-time [4], [5], [6].…”

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Sinkronisasi Sensasi Pendengaran dan Visual di dalam Dunia Simulasi Komputer

Utami¹,

Navvab²,

Fela³

2016

Jurnal Nasional Teknik Elektro dan Teknologi Informasi (JNTETI)

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Abstract-Current application of virtual environment synthesized by computer simulation still focuses on generating visual cues, while auditory cues has not yet been optimized to create individual movements within the virtual space. Auditory cueing is limited to the ability in detecting the presence of a sound source without further perception. Auralization of variety of spaces with the impact of a variety of architectural elements were synthesized. The auralization data were produced using current computer-simulation technique where both visual and acoustics properties of the room boundaries are considered. Noticeable differences in the auditory cognition of the virtual spaces are measured through the use of subjective evaluation. The acoustical quality are also evaluated utilizing several objective acoustic measures. Diffuser panels were able to increased ability of sound localization up to 12.5% out of the 40 respondents. These panels also increased the speech intelligibility quality, indicated both by the C 50 which increased by 89% with 97.5% of respondents approved this condition. Analysis of the subjective and objective measures indicates to what extent the alteration of the simulation is required to create a noticeable auditory cues that enhance the auditory and visual sensation of the virtual space.Intisari-Saat ini, aplikasi dunia maya yang interaktif baik untuk simulasi maupun untuk permainan (gaming) lebih berfokus pada penggunaan rangsangan visual. Sementara rangsangan pendengaran belum dioptimalisasi penggunaannya untuk memandu gerakan seseorang di dalam ruang virtual. Rangsangan audial masih dibatasi pada kemampuannya untuk mendeteksi adanya sumber bunyi namun tidak untuk memberikan persepsi pendengaran yang lebih berarti. Pada makalah ini, auralisasi dari beberapa ruang yang dipengaruhi oleh variasi elemen arsitektur ruang telah disintesis. Data auralisasi diperoleh melalui teknik pemodelan komputer yang telah ada di mana sifat-sifat visual dan akustik dari bidang batas ruang tetap diperhatikan. Perbedaan yang dikaji pada sensasi pendengaran di dalam ruang uji diukur menggunakan evaluasi subjektif. Panel diffuser mampu meningkatkan kemampuan lokalisasi sumber bunyi dari 12,5% dari total 40 responden. Panel ini juga mampu meningkatkan kualitas percakapan dengan nilai C 50 yang meningkat sebesar 89%. Kondisi ini diidentifikasi juga oleh 97,5% responden. Analisis terhadap hasil evaluasi subjektif dan nilai parameter objektif ini mengindikasikan sejauh mana modifikasi dalam simulasi perlu dilakukan untuk menciptakan rangsangan pendengaran yang berbeda, yang mampu menguatkan tidak hanya sensasi visual namun juga sensasi pendengaran di dalam ruang virtual.Kata Kunci-rangsangan visual, rangsangan audial, sensasi pendengaran, auralisasi, simulasi komputer.I. PENDAHULUAN Lingkungan pendengaran merupakan sebuah hasil fenomena pantulan, serapan, dan transmisi dari perambatan energi bunyi yang disebabkan oleh unsur-unsur arsitektur ruang. Dalam dunia game dan simulasi komputer virtual, para pengguna (user) in...

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“…With the rapid development of computers and, thus, a significant increase of processing power, more sophisticated acoustical simulation methods were established and applied in the sound field analysis of rooms and buildings. Then, at the beginning of the 1990s, processor speed, memory space and convolution machines became powerful enough to allow room acoustical computer simulation and auralization even on a standard personal computer (PC) (Vian and van Maercke 1986;Vorländer 1989). Back then, simulation times ranged from hours to days to weeks.…”

Section: Introductionmentioning

confidence: 99%

Virtual reality for architectural acoustics

Vorländer

Schröder

Pelzer

et al. 2014

Journal of Building Performance Simulation

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Over the last decades, powerful prediction models have been developed in architectural acoustics, which are used for the calculation of sound propagation in indoor and/or outdoor scenarios. Sound insulation is predicted rather precisely by using direct and flanking transmission models of sound and vibration propagation. These prediction tools are already in use in architectural design and consulting. For the extension towards virtual reality (VR) systems, it is required to accelerate the prediction and simulation tools significantly and to allow an adaptive and interactive data processing during the simulation and 3D audio stimulus presentation. This article gives an overview on the current state-of-the-art of acoustic VR and discusses all relevant components in terms of accuracy, implementation and computational effort. With the progress in processing power, it is already possible to apply such VR concepts for architectural acoustics and to start perceptual studies in integrated architectural design processes.

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Simulation of the transient and steady-state sound propagation in rooms using a new combined ray-tracing/image-source algorithm

Cited by 218 publications

References 0 publications

Object-Based Reverberation for Spatial Audio

Object-Based Reverberation for Spatial Audio

Sinkronisasi Sensasi Pendengaran dan Visual di dalam Dunia Simulasi Komputer

Virtual reality for architectural acoustics

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