A voice picking system using localized navigation speech and Head Tracking

We propose a voice picking system that uses localized guide speech oriented towards the target object, and Head Tracking (HT), which maintains the localized speech position according to the user´s head movement. We verified the usability improvements achieved by the proposed system. The task completion time was reduced by about 1.8 seconds (11.2%) compared to conventional diotic conditions. The post test questionnaire showed that the HT condition is preferred over conventional diotic systems by 1.92 on a 7-point scale. Thus, with the introduction of sound localization in voice picking systems, both the user satisfaction and task efficiency can be improved.