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March 2004 |
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A Brightening Future? A Review of Today's Hearing Instrument Market |
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by Karl E. Strom |
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Hearing instrument unit volume in the US increased by 4.9% during 2003—the first major increase since 1998—while private dispensing practices saw their unit volumes increase by an average of 2.6%. There are some good reasons to be optimistic about 2004 and beyond. Here’s why. |
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The Process of Listening |
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by Richard Halley, PhD, and Richard Carmen, AuD |
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From research on how humans listen, what have we discovered about the listening process? |
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Changing with the Times: Applying Digital Technology to Hearing Aid Shell Manufacturing |
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by Richard Cortez, MS; Nick Dinulescu, MS; Klavs Skafte, BS; Brian Olson; Denise Keenan, MA; and Francis Kuk, PhD |
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Digital technology, in the form of CAD/CAM shell-making, is now being implemented in several manufacturers’ products. Here’s what it means and how it will change your fittings. |
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Rethinking Hearing Aid Occlusion |
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by Richard Navarro, PhD |
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Occlusion is an age-old problem. Is it possible we’re thinking about it too simply? Here are four reasons why hearing aid occlusion and threshold occlusion are two different things. |
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Big Assumptions? Understanding Insertion Loss in Hearing Aids |
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by Bailey K. Wang, PhD |
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What do we mean when we talk about insertion loss? Is REUR really lost when the hearing aid is inserted? Here are good reasons why we should reconsider this idea. |
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Opening Ear Fittings: Nine Questions and Answers |
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by Mark C. Flynn, PhD |
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A look at the occlusion effect, the process of venting a hearing aid, and why “opening ears” has great advantages. |
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A New Method for the Collection of AEPs |
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by Isaac Kurtz, MHSc, PEng, and Yuri Sokolov, PhD, MBA |
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A new system for measuring auditory evoked potentials designed to reduce artifact noise by eliminating and shortening wires, while measuring real-time electrode impedance mismatch. |
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Two-in-One Custom Hearing Aids Made Possible By Software-Based DSP Platform |
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by Laurel A. Christensen, PhD; Diane M. Russ, MA; Bonnie Siu, PhD, and Tammara Thornton, MS |
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Research and field trail results using a software-based digital hearing instrument. |
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