An Evaluation of the Presentation of Acoustic Cues for Shorelining Techniques
- Publisher:
- IEEE
- Publication Type:
- Conference Proceeding
- Citation:
- 2023 Immersive and 3D Audio: from Architecture to Automotive (I3DA), 2023, 00, pp. 1-9
- Issue Date:
- 2023-10-23
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| Filename | Description | Size | |||
|---|---|---|---|---|---|
| An Evaluation of the Presentation of Acoustic Cues for Shorelining Techniques.pdf | Accepted version | 1.28 MB |
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The study explores various scenarios for providing shorelining information via spatial audio auditory sensory augmentation with a view to assisting people who are blind or have low vision Shorelining is a strategy often associated with the use of the white cane and generally refers to path following approaches that rely on contours of structures within a built environment The aim is to support clear logical paths of travel In one approach auditory shorelining cues are provided via a sequence of two auditory earcons rendered spatially along the shoreline and at the participant s left or right side In another approach the auditory cues are rendered spatially as gate posts in between which the participant should walk The rendering of the auditory earcons follows the participant s path of travel so that at any given time there is only ever a sequence of two auditory earcons that provides local shorelining information The auditory earcons are rendered via two methods i using loudspeakers appropriately placed along the path of travel and ii using binaural rendering of virtual speakers via smart glasses We compared the performance of spatial audio sensory augmentation with non spatialized spoken language instruction Participants performance was measured in terms of task accuracy time and walking behavior The cognitive workload was measured using a self reporting questionnaire Results indicate that sensory augmentation provided via spatial audio earcons can provide faster and smoother navigational assistance and guidance compared with spoken verbal instructions The results also suggest that current binaural rendering using simple augmented reality tool sets is not as robust as real sound in providing navigational guidance Lastly the gate post shorelining approach seems more effective than the left and right shorelining technique
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