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检索条件"任意字段=2023 Immersive and 3D Audio: from Architecture to Automotive, I3DA 2023"

共 104 条记录，以下是21-30 订阅

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Spatial audio Panning With Elevated Sources Using Horizontal-Only Reproduction Loudspeakers

Spatial Audio Panning With Elevated Sources Using Horizontal...

引用

2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Hollebon, Jacob Fazi, Filippo Maria University of Southampton Institute of Sound and Vibration Research Southampton United Kingdom

ISBN: (纸本)9798350311044

To reproduce virtual sound sources with elevation often elevated reproduction loudspeakers are required (for example with Ambisonics), or alternatively complex inverse filtering with horizontal-only loudspeakers is needed (for example with crosstalk cancellation). it has recently been demonstrated that, at low frequencies, crosstalk cancellation approximates the stereo sine law, which is a simple frequency-independent panning approach. This paper reinforces this link and analyses it for the 3d scenario considering elevated virtual sources. The classic stereo sine law is adapted to include elevation, which is achieved by mapping elevated sources through a cone of confusion to positions in the horizontal plane with no elevation. Results considering localization cues reproduced by a stereo loudspeaker array using measured data corroborate the findings. The inclusion of dynamic cues, such as through the head-tracked sine law, is suggested to improve the perceptual performance. © 2023 iEEE.

关键词： Loudspeakers

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immersive networked music performance systems: identifying latency factors

Immersive networked music performance systems: identifying l...

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Turchet, Luca Tomasetti, Matteo University of Trento Dept. of Information Engineering and Computer Science Trento Italy

ISBN: (纸本)9798350311044

Music playing with binaural systems has thus far received remarkably little attention by the research community. Such an activity is particularly relevant for the case of networked music performances (NMPs), where geographically displaced musicians play together over a telecommunication network. Recent findings obtained in simulated settings have shown the preference of musicians for spatialized listening during collaborative playing using headphones, as opposed to listening with conventional stereophonic systems. This result has highlighted the need to enhance current NMP systems with the spatial rendering of the acoustic scene, leading to the development of immersive networked music performance (iNMP) systems. A crucial aspect that needs to be addressed is the contribution of the spatial audio system to the overall latency of the audio processing and transmission chain between the network nodes. in this paper, we provide an overview of the iNMP topic and identify the latency contributions of the components of an iNMP system. We then relate such components to state-of-the-art hardware and software systems. Based on our analysis, we draw concluding remarks and discuss the open challenges for progressing the iNMP field. © 2023 iEEE.

关键词： Music

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A New HRTF interpolation Approach for Nonlinear 3d audio Systems

A New HRTF Interpolation Approach for Nonlinear 3D Audio Sys...

引用

2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Bruschi, Valeria dourou, Nefeli Carini, Alberto Cecchi, Stefania Università Politecnica Delle Marche Dept. of Information Engineering Ancona Italy University of Trieste Dept. of Engineering and Architecture Trieste Italy

ISBN: (纸本)9798350311044

Binaural synthesis plays a vital role in 3d audio systems, relying on head-related transfer functions (HRTFs) to achieve realistic sound rendering. However, the reproduction system used in the HRTF measurement can introduce nonlinearities that impact the immersive experience. in light of this, the present study introduces a robust HRTF identification method designed to address these nonlinearities. Additionally, a novel HRTF interpolation technique is proposed, aiming at reducing the required number of measurement points while still ensuring faithful reproduction of the virtual auditory scene. Specifically, the interpolation is applied following a frequency warping process, which enhances the representation of lower frequencies within the HRTFs while simultaneously reducing the number of frequency bins. The resulting interpolated HRTFs are then unwrapped and utilized for binaural reproduction, contributing to an improved audio experience. © 2023 iEEE.

关键词： audio systems

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Enhancing Virtual audio immersion Using Binaural Mesh

Enhancing Virtual Audio Immersion Using Binaural Mesh

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Bukvic, ivica ico Virginia Tech School of Performing Arts Icat BlacksburgVA United States

ISBN: (纸本)9798350311044

Binauralization of sound sources has become a dominant form of virtual spatialization in arts, entertainment, and industry. One of the greatest challenges associated with binauralization of virtual sources has been balancing scalability with fidelity. in the following paper the author presents a novel approach to binauralizing virtual sound sources using d4 library's Binaural Mesh. The paper presents the rationale for the Binaural Mesh, outlines its newfound affordances, including Motion Blur, Spatial Mask, as well as ultradirectionality and a capacity for improved spatial image. Further, the paper offers a feasibility study focusing on Binaural Mesh's potential to scale by optimizing computational overhead in source rich environments that exceed the capacity of the existing high-fidelity HRTF-based counterparts. © 2023 iEEE.

关键词： image enhancement

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The effect of an audio-video stimulation on emotions: a virtual reality study

The effect of an audio-video stimulation on emotions: a virt...

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Burattini, Chiara Bisegna, Fabio d'Aurizio, Giulia Curcio, Giuseppe Rome Italy University of l'Aquila Dept. of Biotechnological and Applied Clinical Science L'Aquila Italy

ISBN: (纸本)9798350311044

Working conditions are a frequent cause of stress in industrialized Countries and inducing positive emotions can have the effect to reduce stress level. Previous studies indicated that images, sounds and video can modulate human emotions, inducing positive or negative emotional states. This work investigated the role of a standardized audio-video stimulation with virtual reality to induce positive emotions and reduce human stress. A sequence of sounds, images and videos was administrated to ten participants in a virtual environment representing an office. Subsequently their emotional states were assessed using the Positive and Negative Affect Scale (PANAS), Self-Assessment Manikin (SAM), and Global Vigor Affect Scale (GVAS). Results indicated that the stimulation could elicit positive emotions that affect some stress-related states. © 2023 iEEE.

关键词： Virtual reality

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Spatial audio Production with a New Volumetric Amplitude Panning and diffusion Technique

Spatial Audio Production with a New Volumetric Amplitude Pan...

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Kareer, Saarish Sunder, Kaushik EmbodyVR Inc. San Mateo United States

ISBN: (纸本)9798350311044

The world of spatial audio production is expanding rapidly with multichannel and dolby Atmos formats becoming increasingly popular in music, cinema, and gaming. To keep up with the pace, it's crucial to have tools that accurately represent sound objects in 3d, are intuitive, and effectively translate ideas into perceptual reality. A 3d panner is an essential tool that accurately places a sound source or an object in any point of the 3d space. However, traditional techniques such as Vector Based Amplitude Panning (VBAP) require the listener to be positioned at a "sweet spot"surrounded by loudspeakers on either a 2d ring or a 3d sphere, which limits their effectiveness. Our research presents a novel algorithm for volumetric amplitude panning that does not assume any sweet spot and can work for any loudspeaker layout, both asymmetric and symmetric. Additionally, we've included geometric and distance-based diffusion techniques that guarantee smooth spread across all directions, distances, and diffusion amounts. With this algorithm, we can improve the accuracy and efficiency of sound object placement and enhance the overall spatial audio experience. © 2023 iEEE.

关键词： Loudspeakers

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Blind Localization of Room Reflections with Application to Spatial audio

Blind Localization of Room Reflections with Application to S...

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Hadadi, Yogev Tourbabin, Vladimir Calamia, Paul Rafaely, Boaz Ben-Gurion University of the Negev Electrical and Computer Engineering Beer-Sheva84105 Israel Reality Labs Research Meta RedmondWA United States

ISBN: (纸本)9798350311044

Blind estimation of early room reflections, without knowledge of the room impulse response, holds substantial value. The FF-PHALCOR (Frequency Focusing PHase ALigned CORrelation) method was recently developed for this objective, extending the original PHALCOR method from spherical to arbitrary arrays. However, previous studies only compared the two methods under limited conditions without presenting a comprehensive performance analysis. This study presents an advance by evaluating the algorithm's performance in a wider range of conditions. Additionally, performance in terms of perception is investigated through a listening test. This test involves synthesizing room impulse responses from known room acoustics parameters and replacing the early reflections with the estimated ones. The importance of the estimated reflections for spatial perception is demonstrated through this test. © 2023 iEEE.

关键词： direction of arrival

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immersive spatialized live music composition with performers: a case study, Le vent qui hurle

Immersive spatialized live music composition with performers...

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Giannini, Nicola Université de Montréal Cirmmt Montréal Canada

ISBN: (纸本)9798350311044

This article presents reflections on theoretical and practical aspects of the composition of immersive spatialized live music with performers through a case study, Le vent qui hurle. This is a piece written for the Ensemble d'oscillateurs founded by Nicolas Bernier at the Faculty of Music of the University of Montreal, semi-modular analog synthesizers, metal sheets and sound spatialization. initially, i present the research context, discussing the concepts of spatialization and immersion within the frame of live music. i then examine how compositional intentions can be related to the composition of the sound space. i later discuss the relationship between sound and space by introducing spatial attributes and spatialization strategies. Then i illustrate the context in which the piece was created, covering the rehearsal period and the writing of the score. i then present the immersive, spatial and musical composition strategies i used in writing the piece, illustrating techniques that explore the relationship between analog synthesis and the composition of sound space and the relationship between the spatialization created by speakers with the spatialization created with acoustic sources. Finally, i outline future developments. The perspective of this article is mainly oriented toward the compositional dimension and not the technological dimension. © 2023 iEEE.

关键词： Music

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Spatial audio in YouTube VR Videos and its impacts on Audience Engagement

Spatial Audio in YouTube VR Videos and Its Impacts on Audien...

引用

2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Nguyen, Huyen Willson, Madeline Kansas State University A.Q. Miller School of Media and Communication ManhattanKS United States

ISBN: (纸本)9798350311044

Prior studies have indicated the lack of audience research on true impacts of spatial audio in virtual reality (VR) videos although more video producers started adopting the technology. Filling in this gap and applying the audience engagement theory, we collected viewer statistics from 1,116 360-degree videos on the official YouTube VR channel between 2015 and 2023 and conducted a content analysis of these videos to explore the impact of spatial audio on the number of views, likes, and counts. As a result of multiple regression analyses, spatial audio has statistically significant impacts on viewer statistics. Additionally, among videos featuring spatial audio, fictional videos appeared to be more favorably received than non-fictional videos. Furthermore, through a qualitative content analysis of comments, our study noticed several barriers that viewers encountered such as technical errors, a lack of proper hearing equipment, hearing issues, and discomfort feelings caused by mixed points of audition. © 2023 iEEE.

关键词： Virtual reality

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Performance Optimization of Personal Sound Zones with Crosstalk Cancellation

Performance Optimization of Personal Sound Zones with Crosst...

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2023 immersive and 3d audio: from architecture to automotive, i3da 2023

作者： Qiao, Yue Choueiri, Edgar Princeton University 3D Audio and Applied Acoustics Laboratory Princeton United States

ISBN: (纸本)9798350311044

Two optimization approaches are proposed to enhance the performance of personal sound zone (PSZ) systems with crosstalk cancellation (XTC). The two approaches adjust the trade-off between two important performance attributes of a system: acoustic isolation and crosstalk cancellation, by either modifying the cost function in the optimization problem (the direct approach) or controlling the amount of crosstalk in the target transfer functions (the indirect approach) in the filter generation process. The effectiveness of the two approaches is evaluated using metrics of inter-program isolation (iPi) and XTC level, through numerical simulations based on both a free-field system model and actual transfer function measurements. The results show that at low frequencies, the two approaches can effectively control the trade-off between the two attributes, but their effectiveness is reduced at high frequencies due to the small wavelength. Furthermore, the results demonstrate that the direct approach is more effective in manipulating the trade-off, whereas the indirect approach provides more precise control over the desired XTC performance. © 2023 iEEE.

关键词： Cost functions

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