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Monday, July 8 • 12:00 - 12:20
AN EARCANAL SIZING TOOL AT THE TIP OF OUR FINGER

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The human earcanal remains mostly an unchartered territory: earcanal shapes and dimensions are unique to each individual and despite recent advances in 3D scanning, the capture of the earcanal's exact geometry remains challenging. Nevertheless, the proper selection of an intra-aural hearing protector often requires that the earcanal size be estimated. Therefore, several tools -such as earcanal and concha gages- have been developed over the years to quickly and approximately assess one's earcanal dimensions and recommend the appropriately matching earplug size. In this anthropometric study, sparked by the lexical similarity in French between the noun for the little finger (auriculaire) and the adjective related to aural parts (auriculaire), we explore whether Nature did not provide a suitable earcanal sizing tool... at the tip of our fingers. The methodology is based on the calculation of correlation coefficient matrix obtained by comparison between characteristic geometric features - such as volumes, sections, diameters, and lengths- of both the ear canal and the little finger. The results from a recent pilot study will be presented together with possible field applications for hearing protectors and a selection of in-ear wearables.



Monday July 8, 2019 12:00 - 12:20 EDT
Outremont 4
  T06 Industr. and occup. Noise & vib., SS01 Hearing protection