Improvement of Externalization by Listener and Source Movement Using a "Binauralized" Microphone Array

Hendrickx, Etienne; Stitt, Peter; Messonnier, Jean-Christophe; Lyzwa, Jean-Marc; Katz, Brian F. G.; Boishéraud, Catherine De

doi:10.17743/jaes.2017.0018

Cited by 12 publications

(7 citation statements)

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“…The fact that head movements provide a larger benefit for centrally located sounds ( Brimijoin et al., 2013 ; Hendrickx et al., 2017b ) suggests that the benefit may come from access to binaural differences that support externalization. The finding that self-initiated movements enhance externalization more than source movements ( Hendrickx et al., 2017a ) further suggests that active control and the related sensory predictability are important.…”

Section: Cues For Externalizationmentioning

confidence: 99%

Sound Externalization: A Review of Recent Research

et al. 2020

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Sound externalization, or the perception that a sound source is outside of the head, is an intriguing phenomenon that has long interested psychoacousticians. While previous reviews are available, the past few decades have produced a substantial amount of new data.In this review, we aim to synthesize those data and to summarize advances in our understanding of the phenomenon. We also discuss issues related to the definition and measurement of sound externalization and describe quantitative approaches that have been taken to predict the outcomes of externalization experiments. Last, sound externalization is of practical importance for many kinds of hearing technologies. Here, we touch on two examples, discussing the role of sound externalization in augmented/virtual reality systems and bringing attention to the somewhat overlooked issue of sound externalization in wearers of hearing aids.

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Section: Cues For Externalizationmentioning

confidence: 99%

Sound Externalization: A Review of Recent Research

et al. 2020

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“…Therefore, acoustic recording and reproduction techniques with sufficient spatial acoustic fidelity are essential to achieve high ecological validity of the results in a laboratory experiment [33,34,[46][47][48]. In this study, B-format FOA audio recordings were reproduced via the FOA-3D hexagonal array speaker system, and it has been previously shown that the multichannel loudspeaker system used in this experiment can reproduce realistic spatial acoustic perceptions regarding directivity and distinctiveness of individual sound sources in a space to a similar extent as in-situ conditions [33].…”

Section: Limitations and Future Workmentioning

confidence: 99%

The effects of spatial separations between water sound and traffic noise sources on soundscape assessment

Hong

Lam

Ong

et al. 2020

Building and Environment

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Many studies have investigated the effects of water sound on soundscape with an assumption that target noise coincides with the masker (co-location), while no attention has been paid to spatial separations between target noise and water sound sources. This study aims to explore the effects of spatial separations between target noise and water sound on perceived loudness of target noise (PLN) and overall soundscape quality (OSQ) through laboratory experiments. Traffic noise (target) and a water sound (masker) were recorded as acoustic stimuli and a spherical panoramic video recording of a water fountain was also used as visual stimuli. The audiovisual stimuli were reproduced through a virtual reality head-mounted display and a multichannel ambisonic loudspeaker setup. The traffic noise and water sound were played simultaneously at various azimuthal separations and were combined with a panoramic recording of a water fountain as visual stimulus. Participants assessed the audiovisual stimuli in terms of PLN and OSQ. The effect of the spatial separation between the traffic noise and water sound was significant in both PLN and OSQ. Specifically, the PLN increase at 135° separation was equivalent to an estimated target noise level increment of ~1-2 dB. Similarly, the OSQ decrease at 135° and 180° separation was equivalent to an estimated target noise level increase of ~2-5 dB. Since the typical field of view of users in space is less than 135°, the results suggest that placing water features within a user's field of view could achieve better soundscape.

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“…Since they were not related to the present study, the details of these cues regarding externalization were not discussed in this paper. Readers can refer to some recent studies [18][19][20][21][22] for detailed information.…”

Section: Introductionmentioning

confidence: 99%

The Role of Reverberation and Magnitude Spectra of Direct Parts in Contralateral and Ipsilateral Ear Signals on Perceived Externalization

Schlieper

Peissig

2019

Applied Sciences

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Several studies show that the reverberation and spectral details in direct sounds are two essential cues for perceived externalization of virtual sound sources in reverberant environments. The present study investigated the role of these two cues in contralateral and ipsilateral ear signals on perceived externalization of headphone-reproduced binaural sound images at different azimuth angles. For this purpose, seven pairs of non-individual binaural room impulse responses (BRIRs) were measured at azimuth angles of −90°, −60°, −30°, 0°, 30°, 60°, and 90°in a listening room. The magnitude spectra of direct parts were smoothed, and the reverberation was removed, either in left or right ear BRIRs. Such modified BRIRs were convolved with a speech signal, and the resulting binaural sounds were presented over headphones. Subjects were asked to assess the degree of perceived externalization for the presented stimuli. The result of the subjective listening experiment revealed that the magnitude spectra of direct parts in ipsilateral ear signals and the reverberation in contralateral ear signals are important for perceived externalization of virtual lateral sound sources.

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Improvement of Externalization by Listener and Source Movement Using a "Binauralized" Microphone Array

Cited by 12 publications

References 0 publications

Sound Externalization: A Review of Recent Research

Sound Externalization: A Review of Recent Research

The effects of spatial separations between water sound and traffic noise sources on soundscape assessment

The Role of Reverberation and Magnitude Spectra of Direct Parts in Contralateral and Ipsilateral Ear Signals on Perceived Externalization

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