HEARING AIDS
Issue Stories
Mind the Ports! The Effect of Severe Microphone Inlet Occlusion
Maintaining microphone ports, ensuring they are free from occlusion, is very important to the function of the hearing aid. Severe occlusion of the rear microphone port may produce values of greater than 15 dB of increased output for non-frontally arriving sound that is otherwise attenuated by the directional processing.
Compression in Hearing Aids: Why Fast Multichannel Processing Systems Work Well
References in the academic literature maintain that flattening of the speech envelope by fast multichannel amplitude compression reduces speech intelligibility—references that typically ignore the counteracting effect of recruitment. A perspective from one of the pioneering engineers of compression in hearing instruments.
MPO: A Forgotten Parameter in Hearing Aid Fitting
It is important to select a hearing aid with a sufficiently high MPO such that the desired gain plus the input levels would not be limited by the MPO. The same considerations should also be applied to setting the MPO on a hearing aid in order to ensure maximum audibility and optimal SNR, while considering listening comfort.
Reported Hearing Aid Use Versus Datalogging in a VA Population
The objective analysis afforded by datalogging can provide the clinician with information to more effectively program the hearing aids and counsel the patient; however, the clinician is ultimately responsible for knowing how to use that information appropriately—particularly when there is a discrepancy between the user report and the datalogging.
What Helen Keller Knew; What Popular Thought Overlooks
An honest, realistic appraisal of the emotional and psychosocial challenges that beset a huge swath of the general public—those who have moderate to profound hearing loss. The fact that hearing loss has often been called an "invisible handicap" illustrates why so many people fail to recognize its impact on their lives.
News Stories
Starkey Appoints Jerry Northern Director of Special Projects in Education,Training
Northern will be responsible for developing and managing corporate level projects in the Starkey departments of education, research, marketing, and sales.
7/2/2008
Sonic Innovations Establishes Fund for Armed Forces Foundation
Utah-based company will donate up to $50 for each Velocity hearing aid purchase to benefit US service personnel.
7/2/2008
News: Around The (Acoustic) Horn
Sonova Invests in New High-Tech Production Facility
The new plant, which is expected to be ready at the end of next year, will cost approximately $38 million.
6/26/2008
News: Around The (Acoustic) Horn
Colorado Governor Signs Hearing Aid Insurance Mandate Into Law
The new law calls for health insurers to provide coverage for two hearing aids once every five years, including all accompanying service and supplies for Coloradans under the age of 18. Similar measures are making progress in California, Delaware, Illinois, New Jersey, and Wisconsin.
6/19/2008
Products and Resources
Sennheiser, Oticon Offer TV and Mobile Device Solution
With Sennheiser's Set 820-S wireless assistive listening device, hearing aid users reportedly can now follow their favorite prime-time programs with a high level of clarity and freedom--without disturbing others in the room.
6/19/2008
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