How Stiffness and Mass Impact the Audiogram

A number of years ago, an article was published describing the importance of the impedance formula in interpretation of audiograms1.  The article by Campbell offered a fairly simple and visible way to help understand the audiogram, based on stiffness and mass, and the impact of these two elements on conductive hearing loss.  It is recognized…

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Hearing Testing History: Western Electric 2-A Audiometer

Western Electric 2-A Audiometer Most hearing care professionals have heard or read that one of the early audiometers for the measurement of hearing sensitivity was the Western Electric 2-A audiometer.  Few have any idea what it looked like or what it did.  This post is pleased to bring to readers some of the best detailed…

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