Auditory depth map representations with a sensory substitution scheme based on synthetic fluid sounds

Authors: Simone Spagnol, Stefano Baldan, Runar Unnthorsson in: Multimedia Signal Processing (MMSP), 2017 IEEE 19th International Workshop on Abstract: A novel sensory substitution algorithm based on the sonification of depth maps into physically based fluid flow sounds is described. Spatial properties are extracted from depth maps and mapped into parameters of an empirical phenomenological model of bubble statistics,… Continue Reading Auditory depth map representations with a sensory substitution scheme based on synthetic fluid sounds

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Current use and future perspectives of spatial audio technologies in electronic travel aids

Authors: Simone Spagnol, György Wersenyi, Michael Bujacz, Oana Balan, Marcelo Herrera Martinez, Alin Moldoveanu, Rúnar Unnthórsson in: Submitted to Mobile Assistive Technologies Abstract: Electronic travel aids (ETAs) have been in focus since technology allowed designing relatively small, light and mobile devices for assisting visually impaired persons (VIPs). Since VIPs rely on spatial audio cues as their primary sense… Continue Reading Current use and future perspectives of spatial audio technologies in electronic travel aids

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Cognitive Load Assessment from EEG and Peripheral Biosignals for the Design of Visually Impaired Mobility Aids

Authors: Charalampos Saitis, Mohammad Zavid Parvez, and Kyriaki Kalimeri in: Wireless Communications and Mobile Computing Abstract: Reliable detection of cognitive load would benefit the design of intelligent assistive navigation aids for the visually impaired (VIP). Ten participants with various degrees of sight loss, navigated in unfamiliar indoor and outdoor environments, while their electroencephalogram (EEG) and electrodermal activity (EDA)… Continue Reading Cognitive Load Assessment from EEG and Peripheral Biosignals for the Design of Visually Impaired Mobility Aids

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Effects of stimulus order on auditory distance discrimination of virtual nearby sound sources

Authors: Simone Spagnol, Rebekka Hoffmann, Árni Kristjánsson, and Federico Avanzini in: The Journal of the Acoustical Society of America 141 Abstract: Stimulus order has been reported to affect perceived loudness. This letter investigates how temporal order affects distance discrimination of receding and approaching pairs of sound sources rendered binaurally in the anechoic near-field. Individual discrimination thresholds for different… Continue Reading Effects of stimulus order on auditory distance discrimination of virtual nearby sound sources

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Relative vibrotactile spatial acuity of the torso

Authors: Ómar I. Jóhannesson, Rebekka Hoffmann, Vigdís Vala Valgeirsdóttir, Rúnar Unnþórsson, Alin Moldoveanu and Árni Kristjánsson in: Experimental Brain Research, November 2017 Abstract: While tactile acuity for pressure has been extensively investigated, far less is known about acuity for vibro-tactile stimulation. Vibrotactile acuity is important however, as such stimulation is used in many applications, including sensory substitution devices.… Continue Reading Relative vibrotactile spatial acuity of the torso

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The Sound of Vision Project: On the Feasibility of an Audio-Haptic Representation of the Environment, for the Visually Impaired

Authors: Ómar I. Jóhannesson, Oana Balan, Runar Unnthorsson, Alin Moldoveanu and Árni Kristjánsson in: Brain Sci. 2016, 6, 20 Abstract: The Sound of Vision project involves developing a sensory substitution device that is aimed at creating and conveying a rich auditory representation of the surrounding environment to the visually impaired. However, the feasibility of such an approach is… Continue Reading The Sound of Vision Project: On the Feasibility of an Audio-Haptic Representation of the Environment, for the Visually Impaired

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Evaluation of Human-Myo Gesture Control Capabilities in Continuous Search and Select Operations

Authors: Adam B. Csapo, Árni Kristjánsson, Hunor Nagy and György Wersényi in: 2017 Federated Conference on Computer Science and Information Systems Abstract: Tactile and haptic devices can be used to control and interact with a wide range of systems, including games, virtual environments and assistive technologies. Although many psychophysical studies have measured thresholds of human sensory capabilities for… Continue Reading Evaluation of Human-Myo Gesture Control Capabilities in Continuous Search and Select Operations

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