METHOD AND DEVICE FOR DETERMINING AN EAR CANAL SIZE

摘要

A method for determining an ear canal size of a user is provided. The method comprises measuring a cross-section perimeter of the little finger of the user at a predetermined distance from base of the little finger of the user, the predetermined distance being between 2/3 and 9/10 of the length of the little finger. The measured cross-section perimeter of the little finger determines the cross-section perimeter of between the opening the ear canal and 1/4 to 1/2 of the length of the ear canal. An earplug finger-gage device comprises plurality of side cavities, each cavity has the same predetermined depth and a first opening having a diameter differing from one another and being adapted to receive a finger. The size of a cross-section of the finger is selected when pressure against the cavity is neither too tight nor too wide to be felt against the cavities.