Fast continuous HRTF acquisition with unconstrained movements of human subjects

He, Jianjun; Ranjan, Rishabh; Gan, Woon‐Seng

doi:10.1109/icassp.2016.7471689

Cited by 11 publications

(8 citation statements)

References 21 publications

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“…There are various techniques to accurately measure or synthesize the individualized HRTFs [74,75]. Recently, He et al [76,77] proposed a fast and continuous HRTF acquisition system that incorporates the head-tracker to allow unconstrained head movements for human subjects. Binaural technique is used by soundscape researchers to playback the recorded sound with sufficient spatial fidelity.…”

Section: Perceptual Reconstruction Of Soundmentioning

confidence: 99%

Spatial Audio for Soundscape Design: Recording and Reproduction

Hong

Lam

et al. 2017

Applied Sciences

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Featured Application: This review introduces the concept of spatial audio in the perspective of soundscape practitioners. A selection guide based on the spatial fidelity and degree of perceptual accuracy of the mentioned spatial audio recording and reproduction techniques is also provided.Abstract: With the advancement of spatial audio technologies, in both recording and reproduction, we are seeing more applications that incorporate 3D sound to create an immersive aural experience. Soundscape design and evaluation for urban planning can now tap into the extensive spatial audio tools for sound capture and 3D sound rendering over headphones and speaker arrays. In this paper, we outline a list of available state-of-the-art spatial audio recording techniques and devices, spatial audio physical and perceptual reproduction techniques, emerging spatial audio techniques for virtual and augmented reality, followed by a discussion on the degree of perceptual accuracy of recording and reproduction techniques in representing the acoustic environment.

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Section: Perceptual Reconstruction Of Soundmentioning

confidence: 99%

Spatial Audio for Soundscape Design: Recording and Reproduction

Hong

Lam

et al. 2017

Applied Sciences

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“…Because there were significant differences observed when evaluating spatial attributes using non-individualized HRTFs with expert listeners [80,81], further investigation into the degree to which non-expert listeners were affected when the binaural tracks were rendered with individualized HRTFs [82,83] and/or headphones with frontal emitters [7] could shed light on studies involving non-expert participants (i.e. soundscape).…”

Section: Recommendations For Future Workmentioning

confidence: 99%

Quality assessment of acoustic environment reproduction methods for cinematic virtual reality in soundscape applications

Hong

Lam

Ong

et al. 2019

Building and Environment

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With the advent of virtual reality (VR) technology, spatial audio has been increasingly adopted to evaluate the acoustic environment in soundscape research. It is therefore imperative to assess the quality of commonly used spatial audio reproduction methods to determine their ecological validity. Through subjective evaluations with 30 participants, the same participant evaluated four outdoor in situ locations vis-à-vis its corresponding audio-visual recording in VR on a separate day. A total of three spatial audio reproduction methods were assessed in VR, and they were all down-mixed from the first-order ambisonics (FOA) recordings to headphonebased FOA-static binaural, FOA-tracked binaural; and FOA 2-dimensional (2D) octagonal speaker array. The participants evaluated the acoustic environment in terms of the overall soundscape quality and perceived spatial qualities at each location. Regarding overall soundscape quality, there were no significant differences in evaluating the sound-source dominance and affective soundscape qualities between in situ and all VR methods. However, significant differences were found in the perceived spatial qualities between three reproduction methods and in situ. Among the source-related spatial attributes, the perceived distance of the dominating sounds was farther in the virtual than in the in situ evaluations. In the localization of sound sources, both the FOA-tracked binaural and the FOA-2D speaker array exhibited higher spatial acoustic fidelity than FOA-static binaural. Regarding the environment-related spatial quality attributes, the 2D speaker array reproduction was perceived as more immersive and realistic than other reproduction methods. Overall, the FOA-tracked binaural appears to exhibit sufficient fidelity for cinematic VR evaluation of soundscapes.

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“…The availability of relatively low-cost hardware technologies for immersive visualization has shown the need for higher fidelity HRTF-based spatial sound simulation. Although recent advances in fast HRTF acquisition make it possible to capture HRTFs via acoustic measurement in minutes [2], [3], individual HRTFs are still hard to obtain for the general public. As a consequence, most applications have been relying on non-individual, or generic, HRTFs.…”

Section: Introductionmentioning

confidence: 99%

Estimation of Spectral Notches From Pinna Meshes: Insights From a Simple Computational Model

Spagnol

Miccini

Onofrei

et al. 2021

IEEE/ACM Trans. Audio Speech Lang. Process.

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While previous research on spatial sound perception investigated the physical mechanisms producing the most relevant elevation cues, how spectral notches are generated and related to the individual morphology of the human pinna is still a topic of debate. Correctly modeling these important elevation cues, and in particular the lowest frequency notches, is an essential step for individualizing Head-Related Transfer Functions (HRTFs).In this paper we propose a simple computational model able to predict the center frequencies of pinna notches from ear meshes. We apply such a model to a highly controlled HRTF dataset built with the specific purpose of understanding the contribution of the pinna to the HRTF. Results show that the computational model is able to approximate the lowest frequency notch with improved accuracy with respect to other state-of-the-art methods. By contrast, the model fails to predict higher-order pinna notches correctly. The proposed approximation supplements understanding of the morphology involved in generating spectral notches in experimental HRTFs.

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Fast continuous HRTF acquisition with unconstrained movements of human subjects

Cited by 11 publications

References 21 publications

Spatial Audio for Soundscape Design: Recording and Reproduction

Spatial Audio for Soundscape Design: Recording and Reproduction

Quality assessment of acoustic environment reproduction methods for cinematic virtual reality in soundscape applications

Estimation of Spectral Notches From Pinna Meshes: Insights From a Simple Computational Model

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