Sensitivity to angular and radial source movements in anechoic and echoic single- and multi-source scenarios for listeners with normal and impaired hearing

  • Micha Lundbeck Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Oldenburg, Germany HörTech gGmbH, Oldenburg, Germany
  • Giso Grimm Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Oldenburg, Germany HörTech gGmbH, Oldenburg, Germany
  • Volker Hohmann Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Oldenburg, Germany HörTech gGmbH, Oldenburg, Germany
  • Søren Laugesen Eriksholm Research Centre, Snekkersten, Denmark
  • Tobias Neher Medizinische Physik and Cluster of Excellence Hearing4all, Oldenburg University, Oldenburg, Germany

Abstract

So far, very little is known about the perception of spatially dynamic sounds, especially under more complex acoustic conditions. Therefore, this study investigated the influence of reverberation and the number of concurrent sources on movement perception of listeners with normal and impaired hearing. Virtual listening environments were simulated with the help of a higher-order Ambisonics-based system that allows rendering complex scenarios with high physical accuracy. Natural environmental sounds were used as the stimuli. Both radial (near-far) and angular (left-right) movement perception were considered. The complexity of the scenarios was varied by adding stationary sound sources as well as reverberation. As expected, hearing-impaired listeners were less sensitive to source movements than normal-hearing listeners, but only for the more complex acoustic conditions. Furthermore, adding sound sources generally resulted in reduced sensitivity to both angular and radial source movements. Reverberation influenced only radial movement detection, for which elevated thresholds were observed. Altogether, these results illustrate the basic utility of the developed test setup for studying factors related to spatial awareness perception.

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Published
2015-12-15
How to Cite
LUNDBECK, Micha et al. Sensitivity to angular and radial source movements in anechoic and echoic single- and multi-source scenarios for listeners with normal and impaired hearing. Proceedings of the International Symposium on Auditory and Audiological Research, [S.l.], v. 5, p. 469-476, dec. 2015. Available at: <https://proceedings.isaar.eu/index.php/isaarproc/article/view/2015-56>. Date accessed: 20 nov. 2017.
Section
2015/7. Novel methods for behavioral & objective assessment of hearing function