Use of binaural and monaural cues to identify the lateral position of a virtual object using echoes
Use of binaural and monaural cues to identify the lateral position of a virtual object using echoes
Under certain conditions, sighted and blind humans can use echoes to discern characteristics of otherwise silent objects. Previous research concluded that robust horizontal-plane object localisation ability, without using head movement, depends on information above 2 kHz. While a strong interaural level difference (ILD) cue is available, it was not clear if listeners were using that or the monaural level cue that necessarily accompanies ILD. In this experiment, 13 sighted and normal-hearing listeners were asked to identify the right-vs.-left position of an object in virtual auditory space. Sounds were manipulated to remove binaural cues (binaural vs. diotic presentation) and prevent the use of monaural level cues (using level roving). With low- (<2 kHz) and high- (>2 kHz) frequency bands of noise, performance with binaural presentation and level rove exceeded that expected from use of monaural level cues and that with diotic presentation. It is argued that a high-frequency binaural cue (most likely ILD), and not a monaural level cue, is crucial for robust object localisation without head movement.
32-39
Rowan, Daniel
5a86eebe-53da-4cd2-953e-e3ca1ae61578
Papadopoulos, Timos
d1af8c5a-f58c-44c8-a4bb-6d2ad9695f95
Edwards, David
8f7765fb-b466-4f28-8bcc-6d1a041aa33d
Allen, Robert
956a918f-278c-48ef-8e19-65aa463f199a
May 2015
Rowan, Daniel
5a86eebe-53da-4cd2-953e-e3ca1ae61578
Papadopoulos, Timos
d1af8c5a-f58c-44c8-a4bb-6d2ad9695f95
Edwards, David
8f7765fb-b466-4f28-8bcc-6d1a041aa33d
Allen, Robert
956a918f-278c-48ef-8e19-65aa463f199a
Rowan, Daniel, Papadopoulos, Timos, Edwards, David and Allen, Robert
(2015)
Use of binaural and monaural cues to identify the lateral position of a virtual object using echoes.
Hearing Research, 323, .
(doi:10.1016/j.heares.2015.01.012).
(PMID:25660196)
Abstract
Under certain conditions, sighted and blind humans can use echoes to discern characteristics of otherwise silent objects. Previous research concluded that robust horizontal-plane object localisation ability, without using head movement, depends on information above 2 kHz. While a strong interaural level difference (ILD) cue is available, it was not clear if listeners were using that or the monaural level cue that necessarily accompanies ILD. In this experiment, 13 sighted and normal-hearing listeners were asked to identify the right-vs.-left position of an object in virtual auditory space. Sounds were manipulated to remove binaural cues (binaural vs. diotic presentation) and prevent the use of monaural level cues (using level roving). With low- (<2 kHz) and high- (>2 kHz) frequency bands of noise, performance with binaural presentation and level rove exceeded that expected from use of monaural level cues and that with diotic presentation. It is argued that a high-frequency binaural cue (most likely ILD), and not a monaural level cue, is crucial for robust object localisation without head movement.
Other
1-s2.0-S0378595515000234-main.pdf__tid=743da448-d492-11e4-b411-00000aab0f6c&acdnat=1427468800_e9f6f9b860338b8ee6ce696fa178df28
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More information
Accepted/In Press date: 27 January 2015
e-pub ahead of print date: 7 February 2015
Published date: May 2015
Organisations:
Inst. Sound & Vibration Research
Identifiers
Local EPrints ID: 375558
URI: http://eprints.soton.ac.uk/id/eprint/375558
ISSN: 0378-5955
PURE UUID: 77d952bc-def0-431d-878d-8f806434181c
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Date deposited: 27 Mar 2015 15:11
Last modified: 15 Mar 2024 03:14
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Author:
Timos Papadopoulos
Author:
David Edwards
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