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Title: Natural listening over headphones in augmented reality using adaptive filtering techniques
Authors: Ranjan, Rishabh
Gan, Woon-Seng
Keywords: Augmented reality (AR)
Spatial audio
Adaptive filtering
Natural listening
Head related transfer function (HRTF)
Issue Date: 2015
Source: Ranjan, R., & Gan, W.-S. (2015). Natural Listening over Headphones in Augmented Reality Using Adaptive Filtering Techniques. IEEE/ACM Transactions on Audio, Speech, and Language Processing, 23(11), 1988-2002.
Series/Report no.: IEEE/ACM Transactions on Audio, Speech, and Language Processing
Abstract: Augmented reality (AR), which composes of virtual and real world environments, is becoming one of the major topics of research interest due to the advent of wearable devices. Today, AR is commonly used as assistive display to enhance the perception of reality in education, gaming, navigation, sports, entertainment, simulators, etc. However, most of the past works have mainly concentrated on the visual aspects of AR. Auditory events are one of the essential components in human perceptions in daily life but the augmented reality solutions have been lacking in this regard till now compared to visual aspects. Therefore, there is a need of natural listening in AR systems to give a holistic experience to the user. A new headphones configuration is presented in this work with two pairs of binaural microphones attached to headphones (one internal and one external microphone on each side). This paper focuses on enabling natural listening using open headphones employing adaptive filtering techniques to equalize the headset such that virtual sources are perceived as close as possible to sounds emanating from the physical sources. This would also require a superposition of virtual sources with the physical sound sources, as well as ambience. Modified versions of the filtered-x normalized least mean square algorithm (FxNLMS) are proposed in the paper to converge faster to the optimum solution as compared to the conventional FxNLMS. Measurements are carried out with open structure type headphones to evaluate their performance. Subjective test was conducted using individualized binaural room impulse responses (BRIRs) to evaluate the perceptual similarity between real and virtual sounds.
ISSN: 2329-9290
DOI: 10.1109/TASLP.2015.2460459
Rights: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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