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Robustness to head misalignment of virtual sound imaging systems

Record type: Article

When binaural sound signals are presented with two loudspeakers, the listener's ears are required to be in the relatively small region which is under control of the system. Misalignment of the head results in inaccurate synthesis of the binaural signals. Consequently, directional information associated with the acoustic signals is inaccurately reproduced. When the two loudspeakers are placed close together, the spatial rate of change of the generated sound field is much smaller than that generated by two loudspeakers spaced apart. Therefore, the performance of such a system is expected to be more robust to misalignment of the listener's head. Robustness of performance is investigated here with respect to head displacement in three translational and three rotational directions. A comparison is given between systems consisting of two loudspeakers either placed close together or spaced apart. The extent of effective control with head displacement and the resulting deterioration in directional information is investigated in the temporal and spectral domain by analyzing synthesized binaural signals. Subjective localization experiments are performed for cases in which notable differences in performance are expected from the previous analysis. It is shown that the system comprising two loudspeakers that are close together is very robust to misalignment of the listener's head.

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Citation

Takeuchi, T. and Nelson, P.A. (2001) Robustness to head misalignment of virtual sound imaging systems Journal of the Acoustical Society of America, 109, (3), pp. 958-971. (doi:10.1121/1.1349539).

More information

Published date: 2001
Keywords: acoustic imaging, acoustic field, hearing, acoustic signal processing

Identifiers

Local EPrints ID: 10247
URI: http://eprints.soton.ac.uk/id/eprint/10247
ISSN: 0001-4966
PURE UUID: 8ab114ce-c506-46ed-8753-8377fb62ef05

Catalogue record

Date deposited: 01 Aug 2005
Last modified: 17 Jul 2017 17:07

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