Design and Validation of a Bike Helmet with Bone Conduction Music Playback
This paper presents a proof of concept, to develop a bike helmet equipped with a system of bone transducers and able to excite the cranium via bone conduction. The purpose of this design is to allow the ears of the wearer to remain unobstructed to ensure a comfortable music listening while maintaining, auditory awareness and localisation capabilities.
A review of the scientific literature about bone conduction shows that of all possible cranium locations, the condyle presents the lowest threshold level of auditory perception when excited. This determined the choice for the final mounting system and the process for the audiometric measurements. The main result is a digital filter obtained with the output magnitude of the transducers and designed to provide comfortable music listening.
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