Auditory model-based estimation of the effect of head-worn devices on frontal horizontal localisation

Pedro Lladó*, Petteri Hyvärinen, Ville Pulkki

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)
73 Downloads (Pure)

Abstract

Auditory localisation accuracy may be degraded when a head-worn device (HWD), such as a helmet or hearing protector, is used. A computational method is proposed in this study for estimating how horizontal plane localisation is impaired by a HWD through distortions of interaural cues. Head-related impulse responses (HRIRs) of different HWDs were measured with a KEMAR and a binaural auditory model was used to compute interaural cues from HRIR-convolved noise bursts. A shallow neural network (NN) was trained with data from a subjective listening experiment, where horizontal plane localisation was assessed while wearing different HWDs. Interaural cues were used as features to estimate perceived direction and position uncertainty (standard deviation) of a sound source in the horizontal plane with the NN. The NN predicted the position uncertainty of localisation among subjects for a given HWD with an average estimation error of 1°. The obtained results suggest that it is possible to predict the degradation of localisation ability for specific HWDs in the frontal horizontal plane using the method.

Original languageEnglish
Article number2021056
Pages (from-to)1-13
Number of pages13
JournalActa Acustica
Volume6
DOIs
Publication statusPublished - 6 Jan 2022
MoE publication typeA1 Journal article-refereed

Keywords

  • Auditory model
  • Head worn device
  • Horizontal localisation
  • Neural network
  • Subjective evaluation

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