Digital Augmented Reality Audio Headset
Joint Authors
Source
Journal of Electrical and Computer Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-10-20
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Engineering Sciences and Information Technology
Information Technology and Computer Science
Abstract EN
Augmented reality audio (ARA) combines virtual sound sources with the real sonic environment of the user.
An ARA system can be realized with a headset containing binaural microphones.
Ideally, the ARA headset should be acoustically transparent, that is, it should not cause audible modification to the surrounding sound.
A practical implementation of an ARA mixer requires a low-latency headphone reproduction system with additional equalization to compensate for the attenuation and the modified ear canal resonances caused by the headphones.
This paper proposes digital IIR filters to realize the required equalization and evaluates a real-time prototype ARA system.
Measurements show that the throughput latency of the digital prototype ARA system can be less than 1.4 ms, which is sufficiently small in practice.
When the direct and processed sounds are combined in the ear, a comb filtering effect is brought about and appears as notches in the frequency response.
The comb filter effect in speech and music signals was studied in a listening test and it was found to be inaudible when the attenuation is 20 dB.
Insert ARA headphones have a sufficient attenuation at frequencies above about 1 kHz.
The proposed digital ARA system enables several immersive audio applications, such as a virtual audio tourist guide and audio teleconferencing.
American Psychological Association (APA)
Rämö, Jussi& Valimaki, Vesa. 2012. Digital Augmented Reality Audio Headset. Journal of Electrical and Computer Engineering،Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-473039
Modern Language Association (MLA)
Rämö, Jussi& Valimaki, Vesa. Digital Augmented Reality Audio Headset. Journal of Electrical and Computer Engineering No. 2012 (2012), pp.1-13.
https://search.emarefa.net/detail/BIM-473039
American Medical Association (AMA)
Rämö, Jussi& Valimaki, Vesa. Digital Augmented Reality Audio Headset. Journal of Electrical and Computer Engineering. 2012. Vol. 2012, no. 2012, pp.1-13.
https://search.emarefa.net/detail/BIM-473039
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-473039